js array .push a var code example
Example 1: push array javascript
let array = ["A", "B"];
let variable = "what you want to add";
//Add the variable to the end of the array
array.push(variable);
//===========================
console.log(array);
//output =>
//["A", "B", "what you want to add"]
Example 2: js add array items to array
var arrayA = [1, 2];
var arrayB = [3, 4];
var newArray = arrayA.concat(arrayB);