bind vs closure

JavaScript performance comparison

Test case created

Info

to compare if using closure

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
 
<script>
  Benchmark.prototype.setup = function() {
    var obj = { 
     minVal : 20,
     items : [10,20,50,1,30,40,50,500,200,5],
                        
    checkIfValid: function(a){ 
        return (a >= this.minVal) ? true : false; 
    },
                        
    closureMechanism: function() {
        var that = this,
            numValids = this.items.map(function(item) {
                return that.checkIfValid(item);
            });
            return numValids;   
    },
    bindMechanism: function(){
        var numValids = this.items.map(this.checkIfValid.bind(this));
            return numValids;
    },
    proxyMechanism: function(){
       var numValids = this.items.map($.proxy(this.checkIfValid,this));
       return  numValids;
    }
    
    };
  };
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
closure method
 
obj.closureMechanism();

 
 pending…
bind method
 
obj.bindMechanism();
 pending…
proxy method
 
obj.proxyMechanism();
 pending…

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