Java script variable question

Chandan Kumar Sahoo

What is the difference between a variable in java script declared with "var" keyword and without using var keyword in .net .aspx page??

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Ranjit Powar10y ago

Accepted answer

There are two ways to create global variables in javascript

1. Declare variable outside of all functions as below

2. If you want to declare global variable inside function then define it with var keyword as below

In your below script you create y variable without var keyword so it becomes global variable and other functions can also access it, but z is created with var keyword so it is local variable. This is the difference between these two variables.

here in this above example

we have two variable

y and z.

y is declared with out var key word.

z is declared with var key word.

what is the difference between these two variable ?

Rajeesh Menoth10y ago
Hi,

.Net also using var keyword.

More details refer the following article :

http://www.c-sharpcorner.com/UploadFile/5ef30d/var-keyword-in-C-Sharp-programming/
Krishna Rajput Singh10y ago
Hello Chnadna Kumar Sahoo Thanks for writing below links i hope helpful for u..:)

http://www.w3schools.com/js/js_variables.asp

https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Statements/var

http://www.tutorialspoint.com/javascript/javascript_variables.htm

http://www.wikihow.com/Declare-a-Variable-in-Javascript

if answer find helpful please mark answer as correct

Special thanks c-sharpconer