JavaScript String codePointAt() Method

JavaScript string codePointAt() is an inbuilt method in JavaScript that is used to return a non-negative integer value i.e, the code point value of the specified element of the given string. that

Syntax:

string.codePointAt(A)

Parameters: It accepts a parameter that shows the index of an element in the string. The index starts from zero (0). 

Return Values: It returns the code point value of the element which is denoted by a parameter in the string. It returns undefined if there is no element present at the specified location i.e, at “A”th index.

Below is an example of the string.codePointAt() Method.

Example: This example shows the basic use of the string.codePointAt() Method in javascript.

javascript

<script>
    a = "gfg"
    b = a.codePointAt(1);

    console.log(b)
</script>

Output:

102

JavaScript code to show the working of string.codePointAt() method: 

Example 1: This example shows the basic use of the string.codePointAt() Method in javascript.

javascript

<script>
    // Taking a string "gfg"
    a = "gfg"

    // Pointing each elements of the string
    b = a.codePointAt(0);
    c = a.codePointAt(1);
    d = a.codePointAt(2);

    // Printing the code point value of each element
    console.log(b)
    console.log(c)
    console.log(d)
</script>

Output:

103
102
103

Example 2: The output of the example comes out to be undefined as the third index does not exist.

javascript

<script>
    // Taking a string "gfg"
    a = "gfg"

    // Pointing 4th index of the string
    // index starts from 0
    b = a.codePointAt(3);

    // Printing the code point value
    console.log(b)
</script>

Output:

undefined

Note: Output is undefined because in “gfg” there is no element at 4th index. 

We have a complete list of Javascript string methods, to check those please go through this Javascript String Complete reference article.

Supported Browsers:

• Google Chrome 41 and above
• Edge 12 and above
• Firefox 29 and above
• Opera 28 and above
• Safari 10 and above