I am curious to know why
var myVar = unDef;
may trigger a ReferenceError, while
var myObj = {};
var myVar = myObj.unDef;
runs smoothly? It simply returns undefined without any runtime issues. Despite both not being defined.
I am curious to know why
var myVar = unDef;
may trigger a ReferenceError, while
var myObj = {};
var myVar = myObj.unDef;
runs smoothly? It simply returns undefined without any runtime issues. Despite both not being defined.
With this method, you can utilize
if (myVar.unDef)
instead of the longer and more resource-intensive approach:
if (myVar.hasOwnProperty('unDef'))
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