How to create a zero filled JavaScript array of arbitrary length? [duplicate]

Answer 1

How about trying like this:

Array.apply(null, new Array(10)).map(Number.prototype.valueOf,0);
//Output as [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

or

new Array(10+1).join('0').split('').map(parseFloat)
//Output as [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

EDIT:-

If your array is dynamic then simply put that in a function which takes a number and replace 10 by that variable.

Answer 2

function repeatArray(value, len){
  var A=[],i=0;
  while (i<len) A[i++]= value;
  return A;
}