JavaScript string methods are used to manipulate strings.

JavaScript string methods are used to manipulate strings.
Here are 8 of the most commonly used string methods and their examples:

1. length() 

This method returns the length of a string: 

Example: 

let str = "Hello World"; 

console.log(str.length); //outputs 11

2. indexOf()

This method searches for a specified value in a string and returns the position of the match: 

Example: 

let str = "Hello World"; 

console.log(str.indexOf("World")); //outputs 6

3. substring() This method extracts characters from a string between two specified indices, and returns the new sub-string: 

Example: 

let str = "Hello World"; 

console.log(str.substring(6, 11)); //outputs "World"

4. replace() 

This method searches a string for a specified value and replaces it with a new value: Example: 

let str = "Hello World"; 

console.log(str.replace("World", "there")); //outputs "Hello there"

5. charAt() 

The charAt() method returns the character at the specified index in a string: Example: 

let str = 'Hello World'; 

console.log(str.charAt(0)) ; // Outputs "H"

6. concat() 

The concat() method combines two or more strings and returns a new string: Example: 

let str1 = 'Hello'; 

let str2 = 'World'; 

console.log(str1.concat(' ', str2)); // Outputs "Hello World"

7. includes() 

The includes() method checks if a string contains a specified string/character: Example: 

let str = 'Hello World'; 

console.log(str.includes('World')) ; // Outputs true

8. endsWith() 

This method checks whether a string ends with the characters of a specified string, returning true or false. 

For example: 

let str = 'Hello World'; 

console.log(str.endsWith('orld')); // Output: true