javascript array behaving like pointers

Asked Feb 27 '20 at 02:54

Active Feb 27 '20 at 02:54

Viewed 17 times

When I am changing the value of a copy of the original variable the original variable is getting changed.

The code below

function test(){
  var original= ['','','','1',''];
  var copyy=original;
  copyy[3]="2"; 
  console.log(original);
}

The console output is

 ["", "", "", "2", ""]

Not able to wrap my head around this. jsfiddle

asked Feb 27 '20 at 02:54

Rohan Sharma

1

If you want an array in memory to be cloned, you have to do so explicitly, it'll never happen automatically – CertainPerformance Feb 27 '20 at 02:55
Chage this var copyy = original; To var copyy = [...original]; this may help – Ravinder Kumar Feb 27 '20 at 04:42

0 Answers0