Test case created 5 minutes ago and last updated 4 minutes ago < script > vmulMAP = function ( v , s ) { return v. map ( function ( i ) { return i * s ; } ) ; } ; vmulFOR = function ( v , s ) { var out = new Array ( v. length ) ; for ( var i = 0 ; i < v. length ; i ++ ) { out [ i ] = v [ i ] * s ; } return out ; } ; vmulFIXD = function ( v , s ) { return [ v [ 0 ] * s , v [ 1 ] * s , v [ 2 ] * s , v [ 3 ] * s ] ; } ; < / script > Warning! For accurate results, please disable Firebug before running the tests. (Why?) Java applet disabled. To run the tests, please enable JavaScript and reload the page. Testing in unknown unknown Test Ops/sec MAP vmulMAP ( [ 1 , 0.4 , 0.01 , 1 ] , 130 ) ; pending… FOR vmulFOR ( [ 1 , 0.4 , 0.01 , 1 ] , 130 ) ; pending… FIXED vmulFIXD ( [ 1 , 0.4 , 0.01 , 1 ] , 130 ) ; pending...