Lokesh Gupta

var stringVar = “This is lokesh gupta’s home.”;
This can be written as with single quote as well
var stringVar = ‘This is lokesh gupta’s home’;

This tutorial explains about functions which can be used to manipulate string and numbers like you may need to parse integer value to check whether the variable has integer of not.
Example alert(parseInt(“123Lokesh”));
Here it result in 123 only. parseInt tries to parse a “string” into integer....

This tutorial is about String Concatenation. This is mostly used while development to debug desired output. Also it is important part of data centric application where you need to show for example first name and last name as a combined string.
var firstName = “Lokesh”;...

typeof operator in javascript identifies type of variable
1. undefined
2. boolean