Javascript test ( object && object !== "null" && object !== "undefined" )

Question

I seem to be using this test a lot

if( object && object !== "null" && object !== "undefined" ){     doSomething(); } 

on objects I get back from a service call or from reading cookies (since different browsers return the different values null, undefined, "null", or "undefined").

Is there an easier/more efficient way of doing this check?

Answer 1

I don't think you can make that any simpler, but you could certainly refactor that logic into a function:

function isRealValue(obj) {  return obj && obj !== 'null' && obj !== 'undefined'; } 

Then, at least your code becomes:

if (isRealValue(yourObject)) {  doSomething(); }