JavaScript question and answer with demo page - 1

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1) What is the correct command for Alert pop up message in JavaScript?

1. alert(hello);
2. document.write("hello");
3. alert("hello");

2) How do you open website https://workspace.google.com in JavaScript?

1. window.open("https://workspace.google.com");
2. open("https://workspace.google.com");
3. a href="https://workspace.google.com";

3) How do you write Array containing five fruit names (Apple, Orange, Banana, Grapes and Papaya) through Alert pop up in JavaScript?

1. var fruitesfive = [Apple,Orange,Banana,Grapes,Papaya];
2. var fruitesfive = ["Apple","Orange","Banana","Grapes","Papaya"];
3. var fruitesfive = ("Apple","Orange","Banana","Grapes","Papaya");

4) Write a code to select and display only fruit, Banana from the above five fruits through Alert pop up in JavaScript?

1. var fruitesfive = ["Apple","Orange","Banana","Grapes","Papaya"];
alert(fruitesfive[2]);
2. var fruitesfive = ["Apple","Orange","Banana","Grapes","Papaya"];
alert[fruitesfive(2)];
3. var fruitesfive = {"Apple","Orange","Banana","Grapes","Papaya"};
alert[fruitesfive(2)];

5) Write a code to display the Current Date and Time through Alert pop up in JavaScript?

1. var today = new Date();
alert(today);
2. var today = date();
alert(today);
3. var today = DateTime();
alert(today);

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6) Write a code to convert word "google for small business" to UPPER CASE LETTERS and display through Alert Pop Up in JavaScript?

1. var mytext = "google for small business";
var mytextupper = mytext.toUpper();
alert(mytextupper);
2. var mytext = "google for small business";
var mytextupper = mytext.toUpperCase();
alert(mytextupper);
3. var mytext = "google for small business";
var mytextupper = toUpperCase(mytext);
alert(mytextupper);

7) What is DOM in JavaScript?

1. Document Object Model
2. Document Opening Manner
3. Document Operating Machine

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8) Write a program in JavaScript which will add two numbers 1000 and 1040 and display through P element, Paragraph element, on click of a button using DOM feature? Choose correct code from the below three options

1.
< script >
function adddom()
{
var number1 = 1000;
var number2 = 1040;
var total = number1 + number2;
document.getelementbyId("an2").innerHTML = "total of two numbers: " + total;
}
< /script >
2.
< script >
function adddom()
{
var number1 = 1000;
var number2 = 1040;
var total = number1 + number2;
document.getElementById("an2").innerhtml = "total of two numbers: " + total;
}
< /script >
3.
< script >
function adddom()
{
var number1 = 1000;
var number2 = 1040;
var total = number1 + number2;
document.getElementById("an2").innerHTML = "total of two numbers: " + total;
}
< /script >

9) What is SetTimeout() in JavaScript?

1. Executes a function, once, after waiting a specified number of milliseconds.
2. Executes a function, over and over again, at specified time interval.
3. Executes a function immediately.

10) Write a program in JavaScript which will navigate to a Blog https://goodmorningimages1.blogspot.com after 10 seconds on clicking the button, using setTimeout method(). Also display text "Please wait. you're being navigated to Good Morning Wish pictures Blog " Choose correct code from the below three options

1.
< script >
function visitblog()
{
window.location = "https://goodmorningimages1.blogspot.com";
document.getElementById("an4").innerhtml = "Please wait. you're being navigated to Good Morning Wish pictures Blog ";
}
< /script >
< button onclick="setTimeout(visitblog, 10000);" >Click here to visit Good morning greeting pictures blog after 10 seconds

2.
< script >
function visitblog()
{
window.locate = "https://goodmorningimages1.blogspot.com";
document.getElementById("an4").innerHTML = "Please wait. you're being navigated to Good Morning Wish pictures Blog ";
}
< /script >
< button onclick="setTimeout(visitblog, 10000);" >Click here to visit Good morning greeting pictures blog after 10 seconds

3.
< script >
function visitblog()
{
window.location = "https://goodmorningimages1.blogspot.com";
document.getElementById("an4").innerHTML = "Please wait. you're being navigated to Good Morning Wish pictures Blog ";
}
< /script >
< button onclick="setTimeout(visitblog, 10000);" >Click here to visit Good morning greeting pictures blog after 10 seconds

11) Write a program in JavaScript, on click of a Button to prompt visitor of website to enter name and display back with message, Hello PLUS entered name using Alert pop up. Also display the same in p element. Choose correct script from the three options below.

1.
< script >
function promptinput
{
var yourname = prompt("Enter Name: ", "Your Name Here");
alert("Hello " + yourname);
document.getElementById("an5").innerHTML = "Hello " + yourname;
}
< /script >
< button onclick="promptinput()" > Click here to prompt for user input < / button >

2.
< script >
function promptinput()
{
var yourname = prompt("Enter Name: ", "Your Name Here");
alert("Hello " + yourname);
document.getElementById("an5").innerHTML = "Hello " + yourname;
}
< /script >
< button onclick="promptinput()" > Click here to prompt for user input < / button >

3.
< script >
function promptinput()
{
var yourname = prompt("Enter Name: ", "Your Name Here")
alert("Hello " + yourname);
document.getElementByID("an5").innerHTML = "Hello " + yourname;
}
< /script >
< button onclick="promptinput()" > Click here to prompt for user input < / button >

12) What are the Primitive Data types in JavaScript? Below are the options

1.
string, number, boolean, null, undefined

2.
string, Int, boolean, float, undefined

3.
string, char, boolean, null, undefined

13) Show the example for each of the Primitive Data types string, number, boolean, null, undefined in JavaScript and display the type on click of a button. Below are the options

1.
< script >
function datatypeexample()
{
var dtypes = ["string"," number"," boolean"," null"," undefined"];
alert("Primitive Data types are: " + dtypes);
var myname = "Raja";
alert("My Name is: " + myname);
alert(typeof(myname));
var mysalary = 105000;
alert ("My Salary is: " + mysalary);
alert(typeof(mysalary));
var mysalary = true;
alert(mysalary);
alert(typeof(mysalary));
var negativenumber = null;
alert(negativenumber);
alert(typeof(negativenumber));
document.getElementById("an7").innerHTML = "Primitive Data Types are " + dtypes + "." +" You have seen the examples through alert pop up box";
}
< /script >
2.
< script >
function datatypeexample()
{
var dtypes = ["string"," number" " boolean"," null"," undefined"];
alert(Primitive Data types are: + dtypes);
var myname = "Raja";
alert("My Name is: " + myname);
alert(typeof(myname));
var mysalary = 105000;
alert ("My Salary is: " + mysalary);
alert(typeof(mysalary));
var mysalary = true;
alert(mysalary);
alert(typeof(mysalary));
var negativenumber = null;
alert(negativenumber);
alert(typeof(negativenumber));
document.getElementById("an7").innerHTML = "Primitive Data Types are " + dtypes + "." +" You have seen the examples through alert pop up box";
}
< /script >
3.
< script >
function datatypeexample()
{
var dtypes = ["string"," number"," boolean"," null"," undefined"];
alert("Primitive Data types are: " + dtypes);
var myname = "Raja";
alert("My Name is: " + myname);
alert(type(myname));
var mysalary = 105000;
alert ("My Salary is: " + mysalary);
alert(typeof(mysalary));
var mysalary = true;
alert(mysalary);
alert(typeof(mysalary));
var negativenumber = null;
alert(negativenumber);
alert(typeof(negativenumber));
document.getElementById("an7").innerHTML = "Primitive Data Types are " + dtypes + "." +" You have seen the examples through alert pop up box";
}
< /script >

14) How will you link the external JavaScript file on the Website, Web page. Assuming the File name is webads.js. Choose correct option from the below list.

1.
< script ="webads.js">< /script>
2.
< script src="webads.js">< /script>
3.
< script source="webads">< /script>

15) Your customer is asking you to design a web page that reminds the website visitor with GREETING text "Hi" then line break and "This product is available with discount of 10%" every 3 seconds. How will you code the same by using setInterval() method of JavaScript. Choose correct option from below list.

1.
< script >
function alertreminder()
{
setInterval(function
{ alert("Hi\nThis product is available at a discount of 10%")}, 3000);
document.getElementById("an9").innerHTML = "Alert pop up reminder Count down has started, will display in 3 seconds";
}
< /script>

2.
< script >
function alertreminder()
{
setInterval(function()
{ alert("Hi\nThis product is available at a discount of 10%")}, 3000);
document.getElementById("an9").innerHTML = "Alert pop up reminder Count down has started, will display in 3 seconds";
}
< /script>

3.
< script >
function alertreminder()
{
setInterval(function()
{ alert("Hi\nThis product is available at a discount of 10%")} 3000);
document.getElementById("an9").innerHTML = "Alert pop up reminder Count down has started, will display in 3 seconds";
}
< /script>

16) Write a script to display only current date on the website on click of a button. Output display through alert pop up and also through p - paragraph element, name an10. Choose correct option from below list.

1.
< script >
function datedisplay()
{
var datetime = new Date;
var currentdate = datetime.toDateStr();
alert("Today's date: " +currentdate);
document.getElementById("an10").innerHTML = "Date of today is: " + currentdate;
}
< /script>

2.
< script >
function datedisplay()
{
var datetime = new toDate();
var currentdate = datetime.toDateString();
alert(Today's date: +currentdate);
document.getElementById("an10").innerHTML = "Date of today is: " + currentdate;
}
< /script>

3.
< script >
function datedisplay()
{
var datetime = new Date();
var currentdate = datetime.toDateString();
alert("Today's date: " +currentdate);
document.getElementById("an10").innerHTML = "Date of today is: " + currentdate;
}
< /script>

17) What is clearTimeout() method in JavaScript. Choose the correct option from the below list.

1.

ClearTimeout() method clears a time set with the setTimeout() method. The Id value returned by setTimeout() is used as parameter for the clearTimeout() method. For example, Navigation to another web page within a certain time limit can be stopped by your website visitor by clicking on clearTimeout() button click event.

2.

ClearTimeout() method doesn't clears a time set with the setTimeout() method.

3.

ClearTimeout() method clears a time set with the any other method in JavaScript.

18) You're developing a website for a vegetable restaurant which is offering, daily one type of Dosa dish (seven days seven different types of dosa and free fruit juice) with special discount and one free fruit juice. On click of a button, system day must be picked and display the special Dosa item and free juice name fixed for that day through alert pop up and p - paragraph element display. P - paragraph display with different text color, each day one color. P - paragraph element id is "an12". USE SWITCH CASE STATEMENT. Choose correct option from below list.

1.
< script >
function dayspecialitem()
{
var day;
switch (new Date().getDay())
{
case 0:
day = "Sunday - Special - Butter Masala Dosa with 10% less from normal price";
alert(Free with Butter Masala Dosa \n Mosambi Juice);
x = document.getElementById("an12");
x.style.color = "black";
break;
case 1:
day = "Monday - Special - Wheat or Atta Dosa with 12% less from normal price";
alert("Free with Wheat or Atta Dosa \n Orange Juice");
x = document.getElementById("an12");
x.style.color = "maroon";
break;
case 2:
day = "Tuesday - Special - Neer Dosa with 15% less from normal price";
alert("Free with Neer Dosa \n Grape Juice");
x = document.getElementById("an12");
x.style.color = "darkorange";
break;
case 3:
day = "Wednesday - Special - Ghee Dosa with 14% less from normal price";
alert("Free with Ghee Dosa \n Pine Apple Juice");
x = document.getElementById("an12");
x.style.color = "hotpink";
break;
case 4:
day = "Thursday - Special - Mysore Masala Dosa with 12% less from normal price";
alert("Free with Mysore Masala Dosa \n Apple Juice");
x = document.getElementById("an12");
x.style.color = "coral";
break;
case 5:
day = "Friday - Special - Set Dosa with 16% less from normal price";
alert("Free with Set Dosa\n Sapota Juice");
x = document.getElementById("an12");
x.style.color = "midnightblue";
break;
case 6:
day = "Saturday - Special - Cheese Dosa with 9% less from normal price";
alert("Free with Cheese Dosa\n Strawberry Juice");
x = document.getElementById("an12");
x.style.color = "darkorange";
break;
}
document.getElementById("an12").innerHTML = "Today is " + day;
}
< /script>

/*******/

2.
< script >
function dayspecialitem()
{
var day;
switch (new Date().getDay)
{
case 0:
day = "Sunday - Special - Butter Masala Dosa with 10% less from normal price";
alert("Free with Butter Masala Dosa \n Mosambi Juice");
x = document.getElementById("an12");
x.style.color = "black";
break;
case 1:
day = "Monday - Special - Wheat or Atta Dosa with 12% less from normal price";
alert("Free with Wheat or Atta Dosa \n Orange Juice");
x = document.getElementById("an12");
x.style.color = "maroon";
break;
case 2:
day = "Tuesday - Special - Neer Dosa with 15% less from normal price";
alert("Free with Neer Dosa \n Grape Juice");
x = document.getElementById("an12");
x.style.color = "darkorange";
break;
case 3:
day = "Wednesday - Special - Ghee Dosa with 14% less from normal price";
alert("Free with Ghee Dosa \n Pine Apple Juice");
x = document.getElementById("an12");
x.style.color = "hotpink";
break;
case 4:
day = "Thursday - Special - Mysore Masala Dosa with 12% less from normal price";
alert("Free with Mysore Masala Dosa \n Apple Juice");
x = document.getElementById("an12");
x.style.color = "coral";
break;
case 5:
day = "Friday - Special - Set Dosa with 16% less from normal price";
alert("Free with Set Dosa\n Sapota Juice");
x = document.getElementById("an12");
x.style.color = "midnightblue";
break;
case 6:
day = "Saturday - Special - Cheese Dosa with 9% less from normal price";
alert("Free with Cheese Dosa\n Strawberry Juice");
x = document.getElementById("an12");
x.style.color = "darkorange";
break;
}
document.getElementById("an12").innerHTML = "Today is " + day;
}
< /script >

/*******/

3.
< script >
function dayspecialitem()
{
var day;
switch (new Date().getDay())
{
case 0:
day = "Sunday - Special - Butter Masala Dosa with 10% less from normal price";
alert("Free with Butter Masala Dosa \n Mosambi Juice");
x = document.getElementById("an12");
x.style.color = "black";
break;
case 1:
day = "Monday - Special - Wheat or Atta Dosa with 12% less from normal price";
alert("Free with Wheat or Atta Dosa \n Orange Juice");
x = document.getElementById("an12");
x.style.color = "maroon";
break;
case 2:
day = "Tuesday - Special - Neer Dosa with 15% less from normal price";
alert("Free with Neer Dosa \n Grape Juice");
x = document.getElementById("an12");
x.style.color = "darkorange";
break;
case 3:
day = "Wednesday - Special - Ghee Dosa with 14% less from normal price";
alert("Free with Ghee Dosa \n Pine Apple Juice");
x = document.getElementById("an12");
x.style.color = "hotpink";
break;
case 4:
day = "Thursday - Special - Mysore Masala Dosa with 12% less from normal price";
alert("Free with Mysore Masala Dosa \n Apple Juice");
x = document.getElementById("an12");
x.style.color = "coral";
break;
case 5:
day = "Friday - Special - Set Dosa with 16% less from normal price";
alert("Free with Set Dosa\n Sapota Juice");
x = document.getElementById("an12");
x.style.color = "midnightblue";
break;
case 6:
day = "Saturday - Special - Cheese Dosa with 9% less from normal price";
alert("Free with Cheese Dosa\n Strawberry Juice");
x = document.getElementById("an12");
x.style.color = "darkorange";
break;
}
document.getElementById("an12").innerHTML = "Today is " + day;
}
< /script>

/*******/

Please click for Different Varieties / Types of Dosa

19)Continuing the above question, additionally display Dosa picture also. You're developing a website for a vegetable restaurant which is offering, daily one type of Dosa dish (seven days seven different types of dosa and free fruit juice) with special discount and one free fruit juice. On click of a button, system day must be picked and display the special Dosa item and free juice name fixed for that day through alert pop up and p - paragraph element display. P - paragraph display with different text color, each day one color. P - paragraph element id is "an13". USE SWITCH CASE STATEMENT. Choose correct option from below list. My heartfelt thanks for the Dosa Pictures used in this blog.

1.
< script >
function dayspecialitem1()
{
var day;
switch (new Date().getDay())
{
case 0:
day = "Sunday - Special - Butter Masala Dosa with 10% less from normal price";
alert(Free with Butter Masala Dosa \n Mosambi Juice);
x = document.getElementById("an13");
x.style.color = "black";
document.getElementById("dosa1").style.display = "block";
break;
case 1:
day = "Monday - Special - Wheat or Atta Dosa with 12% less from normal price";
alert("Free with Wheat or Atta Dosa \n Orange Juice");
x = document.getElementById("an13");
x.style.color = "maroon";
document.getElementById("dosa2").style.display = "block";
break;
case 2:
day = "Tuesday - Special - Neer Dosa with 15% less from normal price";
alert("Free with Neer Dosa \n Grape Juice");
x = document.getElementById("an13");
x.style.color = "darkorange";
document.getElementById("dosa3").style.display = "block";
break;
case 3:
day = "Wednesday - Special - Ghee Dosa with 14% less from normal price";
alert("Free with Ghee Dosa \n Pine Apple Juice");
x = document.getElementById("an13");
x.style.color = "hotpink";
document.getElementById("dosa4").style.display = "block";
break;
case 4:
day = "Thursday - Special - Mysore Masala Dosa with 12% less from normal price";
alert("Free with Mysore Masala Dosa \n Apple Juice");
x = document.getElementById("an13");
x.style.color = "coral";
document.getElementById("dosa5").style.display = "block";
break;
case 5:
day = "Friday - Special - Set Dosa with 16% less from normal price";
alert("Free with Set Dosa\n Sapota Juice");
x = document.getElementById("an13");
x.style.color = "midnightblue";
document.getElementById("dosa6").style.display = "block";
break;
case 6:
day = "Saturday - Special - Cheese Dosa with 9% less from normal price";
alert("Free with Cheese Dosa\n Strawberry Juice");
x = document.getElementById("an13");
x.style.color = "darkorange";
document.getElementById("dosa7").style.display = "block";
break;
}
document.getElementById("an13").innerHTML = "Today is " + day;
}
< /script>

/*******/

2.
< script >
function dayspecialitem1()
{
var day;
switch (new Date().getDay)
{
case 0:
day = "Sunday - Special - Butter Masala Dosa with 10% less from normal price";
alert("Free with Butter Masala Dosa \n Mosambi Juice");
x = document.getElementById("an13");
x.style.color = "black";
document.getElementById("dosa1").style.display = "block";
break;
case 1:
day = "Monday - Special - Wheat or Atta Dosa with 12% less from normal price";
alert("Free with Wheat or Atta Dosa \n Orange Juice");
x = document.getElementById("an13");
x.style.color = "maroon";
document.getElementById("dosa2").style.display = "block";
break;
case 2:
day = "Tuesday - Special - Neer Dosa with 15% less from normal price";
alert("Free with Neer Dosa \n Grape Juice");
x = document.getElementById("an13");
x.style.color = "darkorange";
document.getElementById("dosa3").style.display = "block";
break;
case 3:
day = "Wednesday - Special - Ghee Dosa with 14% less from normal price";
alert("Free with Ghee Dosa \n Pine Apple Juice");
x = document.getElementById("an13");
x.style.color = "hotpink";
document.getElementById("dosa4").style.display = "block";
break;
case 4:
day = "Thursday - Special - Mysore Masala Dosa with 12% less from normal price";
alert("Free with Mysore Masala Dosa \n Apple Juice");
x = document.getElementById("an13");
x.style.color = "coral";
document.getElementById("dosa5").style.display = "block";
break;
case 5:
day = "Friday - Special - Set Dosa with 16% less from normal price";
alert("Free with Set Dosa\n Sapota Juice");
x = document.getElementById("an13");
x.style.color = "midnightblue";
document.getElementById("dosa6").style.display = "block";
break;
case 6:
day = "Saturday - Special - Cheese Dosa with 9% less from normal price";
alert("Free with Cheese Dosa\n Strawberry Juice");
x = document.getElementById("an13");
x.style.color = "darkorange";
document.getElementById("dosa7").style.display = "block";
break;
}
document.getElementById("an13").innerHTML = "Today is " + day;
}
< /script>

/*******/

3.
< script >
function dayspecialitem1()
{
var day;
switch (new Date().getDay())
{
case 0:
day = "Super Sunday - Special - Butter Masala Dosa with 10% less from normal price";
alert("Free with Butter Masala Dosa \n Mosambi Juice");
x = document.getElementById("an13");
x.style.color = "black";
document.getElementById("dosa1").style.display = "block";
break;
case 1:
day = "Monday - Special - Wheat or Atta Dosa with 12% less from normal price";
alert("Free with Wheat or Atta Dosa \n Orange Juice");
x = document.getElementById("an13");
x.style.color = "maroon";
document.getElementById("dosa2").style.display = "block";
break;
case 2:
day = "Tuesday - Special - Neer Dosa with 15% less from normal price";
alert("Free with Neer Dosa \n Grape Juice");
x = document.getElementById("an13");
x.style.color = "darkorange";
document.getElementById("dosa3").style.display = "block";
break;
case 3:
day = "Wednesday - Special - Ghee Dosa with 14% less from normal price";
alert("Free with Ghee Dosa \n Pine Apple Juice");
x = document.getElementById("an13");
x.style.color = "hotpink";
document.getElementById("dosa4").style.display = "block";
break;
case 4:
day = "Thursday - Special - Mysore Masala Dosa with 12% less from normal price";
alert("Free with Mysore Masala Dosa \n Apple Juice");
x = document.getElementById("an13");
x.style.color = "coral";
document.getElementById("dosa5").style.display = "block";
break;
case 5:
day = "Friday - Special - Set Dosa with 16% less from normal price";
alert("Free with Set Dosa\n Sapota Juice");
x = document.getElementById("an13");
x.style.color = "midnightblue";
document.getElementById("dosa6").style.display = "block";
break;
case 6:
day = "Saturday - Special - Cheese Dosa with 9% less from normal price";
alert("Free with Cheese Dosa\n Strawberry Juice");
x = document.getElementById("an13");
x.style.color = "darkorange";
document.getElementById("dosa7").style.display = "block";
break;
}
document.getElementById("an13").innerHTML = "Today is " + day;
}
< /script>

/*******/

Different Types of Dosas. In this website, you will not only see beautiful pictures of Dosa, but also learn how to cook tasty dosas.

20) You're developing a Website for a School. Head Master of that School has decided to display and hide digital time on their website, but current time must be visible on click of a button - Click here for display of current time and another button - Click here to hide the timer . Time must be displayed through p - paragraph element with Id "timestart". Write a JavaScript. Below are the three options. Please choose the correct option and click submit button.

1.

Script for display of Timer

< script >

function displaytime()
{
document.getElementById("timestart").style.display= "block";
var d = new Date();
var t = d.toLocaleTimeString();
document.getElementById("timestart").innerHTML = "Now the TIME is: " + t;
}
< /script >

Script for hiding the Timer

< script >
function hidetime()
{
document.getElementById("timestart").style.display= "none";
}
< /script >
2.

Script for display of Timer

< script >

function displaytime()
{
document.getElementById("timestart").style.display= "visible";
var d = new Date();
var t = d.toLocaleTimeString();
document.getElementById("timestart").innerHTML = "Now the TIME is: " + t;
}
< /script >

Script for hiding the Timer

< script >
function hidetime()
{
document.getElementById("timestart").style.display= "none";
}
< /script >
3.

Script for display of Timer

< script >

function displaytime()
{
document.getElementByid("timestart").style.display= "block";
var d = new Date();
var t = d.toLocaleTimeString();
document.getElementById("timestart").innerHTML = "Now the TIME is: " + t;
}
< /script >

Script for hiding the Timer

< script >
function hidetime()
{
document.getElementById("timestart").style.display = "none";
}
< /script >

21) What is Math object in JavaScript . Write a script to round this number 100000.614 to nearest integer. Display the result through alert pop up and paragraph on the web page. P - Paragraph element name is "an15". Select correct option from the below list.

1.

The Math object method will allow us to perform only addition, substraction, multiplication and division mathematical calculations.

< script >
function roundnumber()
{
var num1 = 100000.614;
var roundnumber = math.round(num1);
alert("Number 100000.614 rounded to is: " + roundnumber);
document.getElementById("an15").innerHTML = "Number 100000.614 rounded to is: " + roundnumber;
}
< /script >

< button onclick="roundnumber()" title="Please click to proceed..." >Number rounded to nearest integer in JavaScript< /button >

2.

The Math object method will allow us to perform mathematical tasks and computations.

< script >
function roundnumber()
{
var num1 = 100000.614;
var roundnumber = Math.round(num1);
alert("Number 100000.614 rounded to is: " + roundnumber);
document.getElementById("an15").innerHTML = "Number 100000.614 rounded to is: " + roundnumber;
}
< /script >

< button onclick="roundnumber()" title="Please click to proceed..." >Number rounded to nearest integer in JavaScript< /button >

3.

The Math Object can do string operations also.

< script >
function roundnumber()
{
var num1 = 100000.614;
var roundnumber = Math.rnd(num1);
alert("Number 100000.614 rounded to is: " + roundnumber);
document.getElementById("an15").innerHTML = "Number 100000.614 rounded to nearest integer is: " + roundnumber;
}
< /script >

< button onclick="roundnumber()" title="Please click to proceed..." >Number rounded to nearest integer in JavaScript< /button >

22) What will be the output of the following Script.

< script >
function outputofvar()
{
var num1 = "2";
var num2 = "2";
var num3 = "0";
alert (num1 + num2 + num3);
document.getElementById("an16").innerHTML = "The output is: " + num1 + num2 + num3;
}
< /script >
< button onclick="outputofvar()" >Click to view output< /button>

Choose the correct one from below list and click Submit button.

1.
"2""2""0"

2.
220

3.
NaN

23) You're designing a website for a Mobile phone show room. They are telling you to change the text color "This model Mobile Phone is on SALE!" and display below underlined contents, on mouse hover and on mouse out event. On mouse hover color is Red and on mouse out color is Blue. Write a Script for the same.

This Mobile Phone is the latest one on the market with salient features.
It's the hot cake, being bought by several people all over the world!
Hurry up! stock is depleting.

Choose the correct one from below list and click Submit button.

1.

On mouse hover, text color change and display Script

< script >
function changeColor()
{
x = document.getElementById("an17");
x.style.color = "#ff0000";
y = document.getelementById("an18");
y.style.display ="block";
}
< /script >

On mouse out, text color change and hide Script

< script >
function onmouseOut()
{
x = document.getElementById("an17");
x.style.color = "blue";
document.getElementById("an18").style.display = "none";
}
< /script >

2.

On mouse hover, text color change and display Script

< script >
function changeColor()
{
x = document.getElementById("an17");
x.style.color = "#ff0000";
y = document.getElementById("an18");
y.style.display ="block";
}
< /script >

On mouse out, text color change and hide Script

< script >
function onmouseOut()
{
x = document.getElementById("an17");
x.style.color = "blue";
document.getElementById("an18").style.display = "none";
}
< /script >

3.

On mouse hover, text color change and display Script

< script >
function changeColor()
{
x = document.getElementById("an17");
x.style.color = "#ff0000";
y = document.getElementById("an18");
y.style.display ="block";
}
< /script >

On mouse out, text color change and hide Script

< script >
function onmouseOut()
{
x = document.getElementById("an17");
x.style.Color = "blue";
document.getElementById("an18").style.display = "none";
}
< /script >

This Mobile Phone is the latest one on the market with salient features.
It's the hot cake, being bought by several people all over the world!
Hurry up! stock is depleting.

This model Mobile Phone is on SALE!

23A) In continuation of question number 23, On mouse hover event, you have to display below shown Mobile phone picture also along with text content. You're designing a website for a Mobile phone show room. They are telling you to change the text color "This model Mobile Phone is on SALE!" and display below underlined contents, on mouse hover and on mouse out event. On mouse hover color is Red and on mouse out color is Blue. Write a Script for the same.

This Mobile Phone is the latest one on the market with salient features.
It's the hot cake, being bought by several people all over the world!
Hurry up! stock is depleting.

Choose the correct one from below list and click Submit button.

1.

On mouse hover, text color change and display Script

< script >
function changeColor1()
{
x = document.getElementById("an19");
x.style.color = "#ff0000";
y = document.getelementById("an20");
y.style.display ="block";
m = document.getElementById("mobilephone1");
m.style.display ="block";
m.style.border = "5px dotted deeppink";
}
< /script >

On mouse out, text color change and hide Script

< script >
function onmouseOut1()
{
x = document.getElementById("an19");
x.style.color = "blue";
document.getElementById("an20").style.display = "none";
}
< /script >

2.

On mouse hover, text color change and display Script

< script >
function changeColor1()
{
x = document.getElementById("an19");
x.style.color = "#ff0000";
y = document.getElementById("an20");
y.style.display ="block";
m = document.getElementById("mobilephone1");
m.style.display ="block";
m.style.border = "5px dotted deeppink";
}
< /script >

On mouse out, text color change and hide Script

< script >
function onmouseOut1()
{
x = document.getElementById("an19");
x.style.color = "blue";
document.getElementById("an20").style.display = "none";
}
< /script >

3.

On mouse hover, text color change and display Script

< script >
function changeColor1()
{
x = document.getElementById("an19");
x.style.color = "#ff0000";
y = document.getElementById("an20");
y.style.display ="block";
m = document.getElementById("mobilephone1");
m.style.display ="block";
m.style.border = "5px dotted deeppink";
}
< /script >

On mouse out, text color change and hide Script

< script >
function onmouseOut1()
{
x = document.getElementById("an19");
x.style.Color = "blue";
document.getElementById("an20").style.display = "none";
}
< /script >

This Mobile Phone is the latest one on the market with salient features.
It's the hot cake, being bought by several people all over the world!
Hurry up! stock is depleting.

This model Mobile Phone is on SALE!

24) Length property of String object demo. On click of a button, prompt dialog box pops up and user has to enter some content, script will display what is entered and count the number of characters. Output screen shots are below. Choose correct option from the list and click Submit button

1.

< script >
function stringobjdemo()
{
var yinput = prompt("Enter some text");
if (yinput != "")
{
alert("Your input: + yinput");
var x = yinput.length;
alert("Count of the content: " + x);
}
else
{
alert("You've not entered anything");
}
document.getElementById("inputtext").innerHTML = "Your input is: " + yinput;
document.getElementById("textlength").innerHTML = "Count of Your input " + yinput + " is: " + x;
}
< /script >

< button onclick="stringobjdemo()" >Click here< /button >

2.

< script >
function stringobjdemo()
{
var yinput = prompt("Enter some text");
if (yinput != "")
{
alert("Your input: " + yinput);
var x = yinput.length;
alert("Count of the content: " + x);
}
else
{
alert("You've not entered anything");
}
document.getElementById("inputtext").innerHTML = "Your input is: " + yinput;
document.getElementById("textlength").innerHTML = "Count of Your input " + yinput + " is: " + x;
}
< /script >

< button onclick="stringobjdemo()" >Click here< /button >

3.

< script >
function stringobjdemo()
{
var yinput = input("Enter some text");
if (yinput != "")
{
alert("Your input: " + yinput);
var x = yinput.length;
alert("Count of the content: " + x);
}
else
{
alert("You've not entered anything");
}
document.getElementById("inputtext").innerHTML = "Your input is: " + yinput;
document.getElementById("textlength").innerHTML = "Count of Your input " + yinput + " is: " + x;
}
< /script >

< button onclick="stringobjdemo()" >Click here< /button >

25) There is some text displayed on the website input box, user is free to change the content and copy the same. Display alert message "You have copied the text and free to use on your own" and DISPLAY THE CONTENT IN THAT INPUT BOX, also same message through paragraph must be displayed on the website. Select correct option from below list and click Submit button.

1.
< input type="text" oncopy="yourcopy()" value="Copy this text and see output" id="inputvalue" style="width: 250px;" />

< p id="copydemo">< /p>
< p id="copiedvalue">< /p>
< script >
function yourcopy()
{
var b = "You have copied the text and free to use on your own" ;
var b = document.getElementById("inputvalue").value;
document.getElementById("copydemo").innerHTML = a;
document.getElementById("copiedvalue").innerHTML = b;
alert(a);
alert(b);
} < /script >

2.
< input type="text" oncopy="yourcopy()" value="Copy this text and see output" id="inputvalue" style="width: 250px;" />
< p id="copydemo">< /p>
< p id="copiedvalue">< /p>
< script >
function yourcopy()
{
var a = "You have copied the text and free to use on your own" ;
var b = document.getElementById("inputvalue").value;
document.getElementById("copydemo").innerHTML = a;
document.getElementById("copiedvalue").innerHTML = b;
alert(a);
alert(b);
}
< / script >

3.
< input type="text" oncopy="yourcopy()" value="Copy this text and see output" id="inputvalue" style="width: 250px;" />
< p id="copydemo">< /p>
< p id="copiedvalue">< /p>
< script >
function yourcopy()
{
var a = "You have copied the text and free to use on your own" ;
var b = document.getElementById("inputvalue").value;
document.getElementByid("copydemo").innerHTML = a;
document.getElementById("copiedvalue").innerHTML = b;
alert(a);
alert(b);
}
< / script >

Will Continue... Good Luck!

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Today we're releasing Android 14 and pushing the Android 14 source to the Android Open Source Project (AOSP). Android 14 is designed to improve your productivity as developers while enhancing performance, privacy, security, and customization for users.
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