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jdlich/gist:1121375

Created August 2, 2011 22:20
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gistfile1.js
Array.prototype.sum = function() {
var sum = 0;
for ( var i = 0; i < this.length; i++ ) {
sum += this[i];
}
return sum;
}
@bsparks
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bsparks commented Aug 2, 2011

if it's supported in the browser you could use reduce. here is a link with tutorial and prototype in case the browser doens't have it.
http://www.tutorialspoint.com/javascript/array_reduce.htm

basically:

var arr = [1,2,3,33];
arr.reduce(function(a,b) { return a + b; });

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