How to insert an element in a specific index in JavaScript Array

There are a few ways to insert an element in a specific index in a JavaScript Array. You can use the Array.splice() method, or the Array.push() method.

The Array.splice() method is used to insert or delete elements from an Array. You can also use the Array.splice() method to change the length of the Array.

The `Array.splice() `takes 3 arguments:

  • The first argument is the Array that you want to modify.
  • The second argument is the position of the element that you want to insert.
  • The third argument is the element that you want to insert.

Here is an example of how to use the Array.splice() method:

var arr = ["a", "b", "c"];
arr.splice(1, 0, "x");
console.log(arr);

The code above will modify the Array arr and insert the element x at position 1. The Array arr will now have the following elements: "a", "x", "b", "c".

The Array.push() method is used to add an element to the end of an Array. The Array.push() method takes 1 argument:

  • The first argument is the element that you want to add to the Array.

Here is an example of how to use the Array.push() method:

var arr = ["a", "b", "c"];
arr.push("d");
console.log(arr);

The code above will add the element d to the end of the Array arr. The Array arr will now have the following elements: "a", "b", "c", "d".

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