Does JavaScript have something similar to the null propagating operating in C#?

Question

I have a lot of pieces of JavaScript like

 if(myobject != undefined && myobject.someprop == something)

and I'm wondering if there exists syntax to make this more compact (even if it's a "hack" of some sort).

You could simplify this to `if (myobject && myobject.someprop == something)`, but there is no similar operator in Javascript. — Zev Spitz, Sep 06 '16 at 20:08
Hmm, didn't really mean to use the dupe-hammer there, but you've tagged the question C#. Does the link answer your question? — Blorgbeard, Sep 06 '16 at 20:09

score 0 · Answer 1 · edited May 23 '17 at 12:16

You can do simply like:

if(myobject && myobject.someprop == something)

Or typeof validation:

if(typeof myobject != 'undefined' && myobject.someprop == something)

Checking an object's property within a valid object:

if(myobject && myobject.hasOwnProperty('your_property'))

You have a lot of possibilities in verifying objects or variables, but the all the operators work in that way in Javascript..

Here you can see more detailed ways to code your validation: How to check a not-defined variable in JavaScript

1 Answers1