What is === operator?
=== is called a strict equality operator, which returns true when the two operands have the same value without conversion.
What is the difference between ViewState and SessionState?
‘ViewState’ is specific to a page in a session. ‘SessionState’ is specific to user-specific data that can be accessed across all web application pages.
Which symbol is used for comments in Javascript?
// for Single line comments and /* Multi Line Comment */
What is the working of timers in JavaScript?
Timers are used to execute a piece of code at a set time or repeat the code in a given interval. This is done by using the functions setTimeout, setInterval, and clearInterval. The setTimeout(function,…
What is ‘this’ keyword in JavaScript?
‘This’ keyword refers to the object from where it was called.
What is a prompt box?
A prompt box is a box that allows the user to enter input by providing a text box. A label and box will be provided to enter the text or…
What are global variables? How are these variable declared?
Global variables are available throughout the length of the code so that it has no scope. The var keyword is used to declare a local variable or object. If the…
Write the code for adding new elements dynamically?
<html> <head> <title>t1</title> <script type="text/javascript"> function addNode () { var newP = document. createElement("p"); var textNode = document.createTextNode(" This is a new text node"); newP.appendChild(textNode); document.getElementById("firstP").appendChild(newP); } </script> </head> <body>…
What are undeclared and undefined variables?
Undeclared variables are those that do not exist in a program and are not declared. If the program tries to read the value of an undeclared variable, then a runtime…
Which company developed JavaScript?
Netscape is the software company that developed JavaScript.