what best proceed loops javascript


i have stumbled several methods looping javascript, i many is:



for(var i = 0; i < a.length; i++){
    var component = a[i];
}


but tested here (), should substantially combined length wholly distributed once.



in jquery there .each hang function. i small better, since i don't have form array twice, above solution.



if javascript upheld macros square cake play your own, nonetheless sadly does not.



so guys use?



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