I want to replace all values with other array values, both arrays are the same size

Question

eg:

var Array1=array(1,2,3,4,5,6);
var Array2=array(7,8,9,10,11,12);

after replacement Array2

from the Array1

values of the resulting array should be

var Array1=array(7,8,9,10,11,12);

+5

SUGU 04 june 15 at 9:58 am

4 answers

Andy · Answer 1 · 2015-06-04T10:02:09+0000

Array1 = Array2.slice(0);

This will take a copy Array2

, not a link to it, so if you make changes to Array2

, they won't show up in Array1

.

broofa · Answer 2 · 2017-07-28T22:48:56+0000

Before ES6:

Array1.length = 0;                  // Clear contents
Array1.push.apply(Array1, Array2);  // Append new contents

ES6 post:

Array1.splice(0, Array1.length, ...Array2);

Dary · Answer 3 · 2018-04-04T05:28:01+0000

With a for loop:

var Array1=[1,2,3,4,5,6];
var Array2=[7,8,9,10,11,12];
for (var i = 0; i < Array1.length; i++){
  Array1[i] = Array2[i]
}
console.log(Array1)

cs04iz1 · Answer 4 · 2015-06-04T10:15:35+0000

As mentioned here , there are many ways to duplicate an array.

Above is the slice.

 var Array1=[1,2,3,4,5,6];
    var Array2=[7,8,9,10,11,12];
    Array1 = [].concat(Array2); 
    alert(Array1);

I want to replace all values ​​with other array values, both arrays are the same size