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checking if var is not defined js
yellow210
Programming language:
Javascript
2021-06-20 17:27:09
0
Q:
checking if var is not defined js
Emily
Code:
Javascript
2021-05-06 09:42:57
if(typeof x !== 'undefined'){ alert("Variable x is defined."); }
1
Underminer
Code:
Javascript
2021-06-06 12:07:21
if (query){ doStuff(); }
-1
Tags
var
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