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JavaScript Interview Questions and Answers
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Questions
JavaScript
0
votes
Q: Which company developed JavaScript?
asked
Oct 10, 2022
in
JavaScript
by
SakshiSharma
javascript
0
votes
Q: Which of the following is not JavaScript Data Types?
asked
Oct 10, 2022
in
JavaScript
by
SakshiSharma
javascript
data-types
0
votes
Q: The syntax of Eval is ________________
asked
Oct 9, 2022
in
JavaScript
by
Robin
eval
javascript
0
votes
Q: If para1 is the DOM object for a paragraph, what is the correct syntax to change the text within the paragraph?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
0
votes
Q: Syntax for creating a RegExp object: 1. var txt=new RegExp(pattern,attributes); 2. var txt=/pattern/attributes; Which of the above mentioned syntax will correct?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
0
votes
Q: Which of the following is true?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
0
votes
Q: What if we put ++ operator inside if condition? find the output of below code <script> var a = 10; if(a == a++) document.write(a); </script>
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
0
votes
Q: What is the output of below Javascript code? alert (typeof new Date() );
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
0
votes
Q: What if you use parseInt() to convert a string containing decimal value?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
parseint
0
votes
Q: Which of the following method checks if its argument is not a number?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
+1
vote
Q: Does JavaScript allow exception handling?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
exception
handling
0
votes
Q: In JavaScript, Arrays are data type) State True or False
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
array
0
votes
Q: Find output of below Javascript addition code document.write("1 plus 1 is " + 1 + 1);
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
0
votes
Q: How ++ works in Javascript? Find output of below Javascript code.
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
operator
0
votes
Q: What is the output of following Javascript? var a = 'letsfind'; var b = 'course'; var c = a/b; document.write(c);
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
code
0
votes
Q: Which of the following function of Array object applies a function simultaneously against two values of the array (from right-to-left) as to reduce it to a single value?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
array-object
0
votes
Q: What is divide by 0 in Javascript? var a = 10;
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
0
votes
Q: Find output of below code var a = '20'; var b = a = 30; document.write(a+b);
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
0
votes
Q: Javascript string using double quotes is exactly the same as a string using single quotes?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
string
0
votes
Q: Which of the following is not the properties of screen objects in JavaScript?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
objects
properties
0
votes
Q: Which of the following are the functional components in JavaScript?
asked
Oct 9, 2022
in
JavaScript
by
Robin
functional-component
javascript
0
votes
Q: Which of the following are the errors in JavaScript?
asked
Oct 9, 2022
in
JavaScript
by
Robin
javascript
0
votes
Q: What are the two basic groups of dataypes in JavaScript?
asked
Oct 9, 2022
in
JavaScript
by
Robin
database
javascript
0
votes
Q: What is the original name of JavaScript?
asked
Oct 8, 2022
in
JavaScript
by
rajeshsharma
javascript
0
votes
Q: Why so JavaScript and Java have similar name?
asked
Oct 8, 2022
in
JavaScript
by
rajeshsharma
java
javascript
0
votes
Q: Which of the following is not Javascript frameworks or libraries?
asked
Oct 8, 2022
in
JavaScript
by
rajeshsharma
javascript
0
votes
Q: What is the correct syntax for referring to an external script called "LFC.js"?
asked
Oct 8, 2022
in
JavaScript
by
rajeshsharma
external-script
javascript
0
votes
Q: Which of the following is the correct syntax to display "Letsfindcourse" in an alert box using JavaScript?
asked
Oct 8, 2022
in
JavaScript
by
rajeshsharma
alert-box
javascript
0
votes
Q: How to get a particular value using the tagged name?
asked
Oct 8, 2022
in
JavaScript
by
rajeshsharma
tagged-name
javascript
0
votes
Q: What is the need for bubble charts?
asked
Oct 8, 2022
in
JavaScript
by
rajeshsharma
bubble-chart
javascript
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