var arrrrr = arr.filter(function(x){ if (x < 2){ return false; } for (var i = 2; i < x; i++){ if (x%i==0){ return false; } } return true; }); alert(arrrrr);
return arrrrr;
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aiyicha
var arrrrr = arr.filter(function(x){ if (x < 2){ return false; } for (var i = 2; i < x; i++){ if (x%i==0){ return false; } } return true; }); alert(arrrrr);
return arrrrr;