how remove numcheck

[lizhi]

as code

for (var i:int = 0; i < 100000000;i++ ){
                                var a:Number = arr[0]
                        }


js code

for (var /** @type {number} */ i = 0; i < 100000000; i++) {
    var /** @type {number} */ a = Number(this.arr[0]);
  }

and how remove the Number(this.arr[0]);

this good,but not good in loop



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