Prevent Undefined Property Error with Ternary Operator

by mmansion May 08, 2013

HTML

<div id="io"></div>

JavaScript

var obj = {};

//trying to access obj.prop.sub would throw error without first checking if obj.prop existed
var sub = (obj.prop) ? (obj.prop.sub) ?  obj.prop.sub: false: false;


console.log(sub);

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Prevent Undefined Property Error with Ternary Operator

HTML

JavaScript

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Join the 4+ million users, and keep the JSFiddle dream alive.

Ad-free

Use pre-released features

Fiddle collections

Private collections and fiddles

Console