use of push method in string in ja code example

Example 1: js push array

var array = [];
var element = "anything you want in the array";
array.push(element); // array = [ "anything you want in the array" ]

Example 2: how to append objects to javascript lists ?

var studentList = ['Jason', 'Samantha', 'Alice', 'Joseph'];

//Add a new student to the end of the student list
studentList.push('Jacob');
//list is updated to ['Jason', 'Samantha', 'Alice', 'Joseph', 'Jacob'];