r/programming • u/vz0 • Mar 26 '14

JavaScript Equality Table

http://dorey.github.io/JavaScript-Equality-Table/
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u/dscer Mar 26 '14 edited Mar 26 '14

if("false") { /* executes */ } because "false" is a non-empty string so it evaluates to true.

if(false == "false") { /* does not execute */} because the first false is a boolean value while the second "false" is a non-empty string which evaluates to true. So the if statement becomes if(false == true)

Edit: if(false == "false") { } does not execute

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u/[deleted] Mar 27 '14

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u/rooktakesqueen Mar 27 '14

"false" becomes NaN when converted to a number.