I want to replace all values with another array values , both arrays are in same size [closed]

Answer 1

Use slice:

Array1 = Array2.slice(0);

This will take a copy of Array2, not make a reference to it, so if you make changes to Array2 they won't be reflected in Array1.

DEMO

Answer 2

With 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)

Answer 3

in this example, it is possible to exclude the value of an array of type CONST, and the value of an array is passed to or another. I had this problem.

fields = [1,2,3,4]

var t = fields.filter(n => {
  return n != 4;
});

// t => [1,2,3]

fields.splice(0, fields.length, ...t);

console.log(fields);//[1,2,3]

Answer 4

Prior ES6 (using push):

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

Post ES6 (using splice):

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