Object Initalisation Methodology

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    window.test = function (a) {
        return a || undefined;
    }
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
Null
window.asdf = {a:null,b:null,c:null};
test(asdf);
asdf.a = Math.random();
asdf.b = Math.random();
asdf.c = Math.random();
 
pending…
Blank
window.uiop = {};
test(uiop);
uiop.x = Math.random();
uiop.y = Math.random();
uiop.z = Math.random();
 
pending…
Undefined
window.qwerty = {a:undefined,b:undefined,c:undefined};
test(qwerty);
qwerty.d = Math.random();
qwerty.e = Math.random();
qwerty.f = Math.random();
 
pending…
Number
window.ghjkl = {a:0,b:0,c:0};
test(ghjkl);
ghjkl.t = Math.random();
ghjkl.u = Math.random();
ghjkl.v = Math.random();
 
pending…
Boolean
window.zxcv = {a:false,b:false,c:false};
test(zxcv);
zxcv.g = Math.random();
zxcv.h = Math.random();
zxcv.i = Math.random();
 
pending…
String
window.bnm = {a:'',b:'',c:''};
test(bnm);
bnm.q = Math.random();
bnm.r = Math.random();
bnm.s = Math.random();
pending…

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