How to check 'undefined' value in jQuery

Question

Possible Duplicate:
Detecting an undefined object property in JavaScript
javascript undefined compare

H

Answer 1

I know I am late to answer the function but jquery have a in build function to do this

if(jQuery.type(val) === "undefined"){
    //Some code goes here
}

Refer jquery API document of jquery.type https://api.jquery.com/jQuery.type/ for the same.