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.
Is it possible to break JavaScript Code into several lines?
Breaking within a string statement can be done by using a backslash, ‘\,’ at the end of the first line. Example: document. Write ("This is \a program,"); And if you…
What is negative Infinity?
Negative Infinity is a number in JavaScript which can be derived by dividing negative number by zero.
Which is faster between JavaScript and an ASP script?
JavaScript is faster. JavaScript is a client-side language,, and thus it does not need the assistance of the webserver to execute. On the other hand, ASP is a server-side language…
What is the use of isNaN function?
isNan function returns true if the argument is not a number; otherwise, it is false.