Javascript Test

Free Javascript Test

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There are 12 questions to complete in this free JavaScript Test. The test does not have a time limit but it should take no more than 6 minutes to complete.

Summary of JavaScript Test
This quiz includes questions related to Javascript code, functions, datatypes, pop up boxes, exceptions, arrays, regular expressions, browser detection, form validation , events and constructors. Start Congratulations - you have completed the Free Javascript Test. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

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JavaScript 1.8 Test
Test of Knowledge of General JavaScript Skills
Your answers are highlighted below.

Question 1

Inside which HTML element do we place JavaScript code?

	<script>
	<js>
	<scripting>
	<javascript>
	None of the above

Question 1 Explanation:This is from the explanation box

Question 2

How do you create a function?

	function:myFunction()
	function myFunction()
	function=myFunction()
	function=myFunction()
	All are correct

Question 3

How do you round the number 7.25, to the nearest integer?

	Math.rnd(7.25)
	rnd(7.25)
	Math.round(7.25)
	round(7.25)

Question 4

This question is related pop up boxes in javascript. What will you use if you want the user to verify or accept something?

	show_alert("Are you sure");
	alert("Are you sure");
	show_confirm(‘Are you sure’);
	confirm(‘Are you sure’);

Question 5

How can you throw exceptions in javascript?

	throw exception(‘There is exception’)
	document.throw.exception(‘There is exception’)
	throw "There is exception"
	There isn’t any method to throw exception in javascript

Question 6

This question is related to arrays in javascript. Which one of the following is the correct way to initialize an array?

	var student=new Array(); myCars[0]="Joe";
	var myCars=new Array("Joe","Chris","Martyn");
	var myCars=["Joe","Chris","Martyn"];
	All of the above are correct

Question 7

Which of the following is not a correct statement about the regular expression “RegExp” in javascript?

	The regular expression has 5 input arguments
	The Regular expression can be used to perform pattern matching
	Regular expressions describe what you are searching for
	Regular expressions are used for searching

Question 8

If you want to detect the browser name in javascript which of the following would you use?

	navigator.appCodeName
	navigator.userAgent
	navigator.appName
	navigator.platform

Question 9

In javascript form validation, lets say we have a text box with the name "fname" and the form name is "myForm". How you will get the value from the text box?

	Var x=document.GetElementById(‘fname’).value;
	var x=document.forms["myForm"]["fname"].value
	var fname=document. myForm.fname.value;
	All of the above are correct

Question 10

When you are working with timing events in javascript, which of the following events would you use to cancel the setTimeout()?

	clearTimeout()
	cancelTimeout()
	clearsetTimeout()
	stopTimeout()

Question 11

Which of the following is correct about the "constructor" when you are working with Number Objext Properties in javascript?

	Returns the primitive value of a Number object
	Allows you to add properties and methods to an object
	Formats a number with x numbers of digits after the decimal point
	Returns the function that created the Number object's prototype

Question 12

The following image shows the dialog box in javascript. Select the appropriate function which will generate it. Alert Box

	Confirm(“This is an Alert Box!”)
	Alert(“This is an Alert Box!”)
	Error(“This is an Alert Box!”)
	MessageBox(“This is an Alert Box!”)

Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results

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Want to compare your skills to other Javascript developers?
Why not take one of the following 40 minute timed Javascript tests for $9.99. They were developed by qualified and highly experienced experts in their field and are used by employers and recruiters to evaluate the job readiness of candidates. At the end of the test you can print out your results and show them to a prospective employer. >>
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Test of Knowledge of General JavaScript Skills

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