Implement object or array deep copy with Json.stringfy () and Json.parse ()

A reference type, such as an object or an array in JavaScript, is copied directly, changing one of the other.

The following code is executed in the browser console:

var arr = [1,2,3];var arr1 = Arr;arr1.push (4); Console.log (arr);  [1,2,3,4]console.log (ARR1);//[1,2,3,4]

Conversion via Json.stringfy () and Json.parse ()

var arr = [1,2,3];var arr1 = json.stringify (arr); var arr2 = Json.parse (arr1); Arr2.push (4); Console.log (arr); [1, 2, 3]console.log (ARR1);//String [1,2,3]console.log (ARR2);//[1, 2, 3, 4]

　　

Implement object or array deep copy with Json.stringfy () and Json.parse ()