Chunk methods

JavaScript performance comparison

Test case created

Info

See http://stackoverflow.com/questions/10474992/split-a-javascript-string-into-fixed-length-pieces

Preparation code

`` <script>  Benchmark.prototype.setup = function() {    var a = "1234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412341234123412"        function A(a) {        var b = [];        for(var i = 4; i < a.length; i += 4){ // length 4, for example           b.push(a.slice(i-4, i));        }        b.push(a.slice(a.length - (4 - a.length % 4))); // last fragment        return b;    }        function B(a) {        return a.match(/(.{1,4})/g);    }        function C(a) {        var size = 4        return [].concat.apply([],            a.split('').map(function(x,i){ return i%size ? [] : a.slice(i,i+size) }, a)        );    }  };</script>``

Test runner

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Testing in unknown unknown
Test Ops/sec
Splice, slice
``var chunks = A(a);``
pending…
Regex
``var chunks = B(a);``
pending…
Array concat
``var chunks = C(a);``
pending…

Revisions

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