JS: Array.prototype.push

By Xah Lee. Date: . Last updated: .

myArray.push(new1, new2 …)

Adds items to the end of the array myArray.

myArray is modified.

Return the new length.

// example of using array.push()
const ar = [3,4];

console.log(
    ar.push(7, [8], 9)
);
// 5

console.log(
    ar
);
// [ 3, 4, 7, [ 8 ], 9 ]

To join arrays by flattening 1 level, see JS: Array.prototype.concat.

To flatten nested array, see JS: Flatten Nested Array.

Reference

ECMAScript® 2016 Language Specification#sec-array.prototype.push

Array Topic

  1. JS: Array Basics
  2. JS: Understand JS Array
  3. JS: Create Array
  4. JS: Sparse Array
  5. JS: Array-Like Object
  6. JS: Array How-To
  7. JS: Array Object
  8. JS: Array.prototype
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