code: function erase(arr, item) {
  	var i = arr.length;
  	while (i--) {
  		if (arr[i] === item) {
  			arr.splice(i, 1);
  			break;
  		}
  	}
  	//return arr;
  }
docs: Remove last occurence of an item from an array
  @param {Array} arr
  @param {Mixed} item