How to Get the First N Characters of a String in JavaScript

Last updated on June 25, 2022
How to Get the First N Characters of a String in JavaScript

1. String slice() Method

To get the first N characters of a string in JavaScript, call the slice() method on the string, passing 0 as the first argument and N as the second. For example, str.slice(0, 2) returns a new string containing the first 2 characters of str.

const str = 'Coding Beauty';

const first2 = str.slice(0, 2);
console.log(first2); // Co

const first6 = str.slice(0, 6);
console.log(first6); // Coding

const first8 = str.slice(0, 8);
console.log(first8); // Coding B

The String slice() method extracts the part of a string between the start and end indexes, which are specified by the first and second arguments respectively. The substring between the indexes 0 and N is a substring containing only the first N string characters.

2. String substring() Method

To get the first N characters of a string, we can also call the substring() method on the string, passing 0 and N as the first and second arguments respectively. For example, str.substring(0, 3) returns a new string containing the first 3 characters of str.

const str = 'Coding Beauty';

const first3 = str.substring(0, 3);
console.log(first3); // Cod

const first5 = str.substring(0, 5);
console.log(first5); // Codin

const first11 = str.substring(0, 11);
console.log(first11); // Coding Beau

Like slice(), substring() returns the part of a string between the start and end indexes, which are specified by the first and second arguments respectively.

See also