Introduction to the assignment of JS arrays

  • 2020-03-30 02:18:05
  • OfStack

var test=[1,2,3,4,5,6,7];
var arr=test;

JS arrays are essentially objects. Therefore, the above source code ends up printing 1,2,3,4,5,6. This is because assigning a test to arr is actually assigning a reference to an array to arr, so the operation arr will do the same

Change the source array.

To implement array cloning, you can:

   return this.slice(0);

Related articles: