JSFiddle - React, Tailwind, and code Playground

JavaScript

var array = [ 1, 0, 1, -1 ];

myFunc = (array) => {
  console.log("ARRAY:");
  console.log(array);
  var result = array;
  array.push(5)
  console.log("RESULT:");
  console.log(result);
}

myFunc(array);