Created
July 12, 2011 08:12
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Cheap 'inArray' trick by @ded
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| /* | |
| * jsFiddle: http://jsfiddle.net/integralist/fL2Xv/ | |
| * Original: http://twitter.com/#!/ded/status/90531502097575936 | |
| */ | |
| if (!Array.prototype.indexOf) { | |
| Array.prototype.indexOf = function(item) { | |
| return ( Math.abs( ~this.indexOf(item) ) )-1; | |
| } | |
| } |
Yep, I probably would do that in a production script, but for the purpose of example it just makes it clearer (in my opinion).
Not that [].indexOf is more complicated or confusing in any way I just find the long winded route more appropriate for examples like this :-)
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if (!Array.prototype.indexOf) {}could be shortened toif (![].indexOf) {}.