Javascript Array delSomeElement(x)

//second task//  w  w  w. j  a va2  s  . co  m

Array.prototype.delSomeElement = function(x) {
  i = 0;
  while ( i  <= (this.length - 1)){
    if (this[i] === x){
      delete this[i];
    }
    i++;
  }
  return this;
};

var myArray = [1, 2, 1, 4, 1, 3, 4, 1, 111, 3, 2, 1, "1"];

console.log(myArray.delSomeElement(1));