insert data in javascript array code example

Example 1: insert item into array specific index javascript

myArray.splice(index, 0, item);

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'];