JavaScript String Methods

Javascript strings are primitive and immutable: All string methods produce a new string without altering the original string.

String length
String charAt()
String charCodeAt()
String codePointAt()
String at()
String [ ]
String slice()
String substring()
String substr()
String toUpperCase()
String toLowerCase()
String concat()
String trim()
String trimStart()
String trimEnd()
String padStart()
String padEnd()
String repeat()
String replace()
String replaceAll()
String split()
See Also:
String Tutorial
String Search
String Templates
String Reference
JavaScript String Length
The length property returns the length of a string:

Example
let text = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
let length = text.length;
Extracting String Characters
There are 4 methods for extracting string characters:

The at(position) Method
The charAt(position) Method
The charCodeAt(position) Method
Using property access [] like in arrays
JavaScript String charAt()
The charAt() method returns the character at a specified index (position) in a string:

Example
let text = "HELLO WORLD";
let char = text.charAt(0);
JavaScript String charCodeAt()
The charCodeAt() method returns the code of the character at a specified index in a string:

The method returns a UTF-16 code (an integer between 0 and 65535).

Example
let text = "HELLO WORLD";
let char = text.charCodeAt(0);
JavaScript codePointAt()
Examples
Get code point value at the first position in a string:

let text = "HELLO WORLD";
let code = text.codePointAt(0);
JavaScript String at()
ES2022 introduced the string method at():

Examples
Get the third letter of name:

const name = "W3Schools";
let letter = name.at(2);
Get the third letter of name:

const name = "W3Schools";
let letter = name[2];
The at() method returns the character at a specified index (position) in a string.

The at() method is supported in all modern browsers since March 2022:

Note
The at() method is a new addition to JavaScript.

It allows the use of negative indexes while charAt() do not.

Now you can use myString.at(-2) instead of charAt(myString.length-2).