javascript - 用函数中的数组替换现有数组

Question

好的，我正在向数组中的每个值添加一个值，并且我想用现有数组替换每个数组值的两个值的总和。如果再次启动此函数，它将添加到"new"数组的顶部。

var howMuch = 1;

var numbers = [
    700,
    800,
    900,
    1000,
    1100,
    1200,
    1300,
    1400,
    1500,
    1600,
    1700,
    1800,
    1900
  ];

function change (string) {
  if(string === 'success'){
     for(var i = 0; i < numbers.length){
        return numbers[i] + howMuch;
      }
   }
}

change('success');


// I'm expecting the global numbers array to be 

    701,
    801,
    901,
    1001,
    1101,
    1201,
    1301,
    1401,
    1501,
    1601,
    1701,
    1801,
    1901
  ];

and if ran again: 

702,
802,
902,
1002,
etc........

THANK YOU IN ADVANCE!!!!

Answer 1

function change (status) {
  if(status === 'success'){
     for(var i = 0; i < numbers.length; i++){
        numbers[i] += howMuch;
      }
   }
}