Created
July 30, 2011 01:49
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benchmarking static vs objects in JS
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function build_static() { | |
var Frontrunner = (function(){ | |
var FR = null; | |
var name = "spike"; | |
return { | |
init: function() { | |
FR = this; | |
return this; | |
}, | |
talk: function() { | |
this.speak(); | |
}, | |
speak: function() { | |
console.log('yo, ' + this.name()); | |
}, | |
me: function() { | |
return FR; | |
}, | |
name: function() { | |
return name; | |
} | |
} | |
})().init(); | |
return Frontrunner; | |
} | |
function build_object() { | |
var Frontrunner = function() { | |
var FR = this; | |
var name = "spike"; | |
this.talk = function() { | |
this.speak(); | |
}; | |
this.speak = function() { | |
console.log('yo, ' + this.name()); | |
}; | |
this.me = function() { | |
return FR; | |
}; | |
this.name = function() { | |
return name; | |
} | |
} | |
return new Frontrunner(); | |
} | |
function benchmark(func, iterations) { | |
var d1 = new Date(); | |
var i = 0; | |
var a = []; // where we keep everything | |
for (i = 0; i < iterations; ++i) { | |
a.shift(func()); | |
} | |
var d2 = new Date(); | |
return (d2 - d1) / 1000; | |
} | |
var iterations = 100000; // number of iterations to run the function | |
var count = 5; // number of times to run the benchmark | |
// benchmarks | |
var static_bms = []; | |
var object_bms = []; | |
var static_total = 0; | |
var object_total = 0; | |
var i = 0; | |
for (i = 0; i < count; ++i) { | |
static_bms.unshift(benchmark(build_static, iterations)); | |
object_bms.unshift(benchmark(build_object, iterations)); | |
static_total += static_bms[0]; | |
object_total += object_bms[0]; | |
} | |
// now, let's average | |
var static_average = static_total / static_bms.length; | |
var object_average = object_total / object_bms.length; | |
console.log('static average: ' + static_average); | |
console.log('object average: ' + object_average); |
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