native_loops.js

var array = [1,2,3,4,5,6,7,8,9,10];

for(var i = 0, _len = array.length; i < _len; i++){
  //do something with array[i]
}

// new snippet
var j = 0, _len = array.length;
while(j < _len){
  //do something with array[j]
  j++;//increment j...
}

///etc