JavaScript string codePointAt() is an inbuilt method in JavaScript that is used to return a non-negative integer value i.e, the method returns the Unicode value at an index (position) in a string.
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
// Taking a string "gfg"let str = "gfg"let result1 = str.codePointAt(0);let result2 = str.codePointAt(1);let result3 = str.codePointAt(2);console.log(result1);console.log(result2);console.log(result3); |
103 102 103
Example 2: The output of the example comes out to be undefined as the third index does not exist.
javascript
// Taking a string "gfg"let str = "gfg"// Pointing 4th index of the string// index starts from 0let result = str.codePointAt(3);// Printing the code point valueconsole.log(result); |
undefined
Example 3: The example iterates over each character in the string “neveropen” and prints the Unicode code point value for each character.
Javascript
let str = "neveropen";for (let i = 0; i < str.length; i++) { const result = str.codePointAt(i); console.log(result);}; |
71 101 101 107 115 102 111 114 71 101 101 107 115
Example 4: In this example, the codePointAt() method is used to get the Unicode code point value of a supplementary character (in this case, the star emoji “????”).
Javascript
let str = "????";let result = str.codePointAt(0);console.log(result); |
127775
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
