How to remove the last character from a string in JavaScript

You can use the slice() and substring() methods to remove one or more characters from the end of a string in JavaScript.

Remove the last character from a string

You can use the slice() method to remove the last character from a string, passing it 0 and -1 as parameters:

const str = 'JavaScript'

const result = str.slice(0, -1)
console.log(result) // JavaScrip

The slice() method extracts a part of a string between the start and end indexes, specified as first and second parameters. It returns the extracted part as a new string and does not change the original string.

Indexes in JavaScript are zero-based. The first character in a string has an index of 0, and the last has an index of str.length - 1.

We passed -1 as an end index to the slice() method to exclude the last character t from the returned string. The negative index of -1 specifies that we want to skip the ending character and get a new string containing the rest.

Alternatively, you could use the substring() method to remove the last character from a string, as shown below:

const str = 'JavaScript'

const result = str.substring(0, str.length -1)
console.log(result) // JavaScrip

The substring() method extracts characters between the start and end indexes from a string and returns the substring.

Remove the last N characters from a string

You can also use the slice() method to remove the last N characters from a string in JavaScript:

const str = 'JavaScript'

const removed2 = str.slice(0, -2)
console.log(removed2) // JavaScri

const removed6 = str.slice(0, -6)
console.log(removed6) // Java

const removed9 = str.slice(0, -9)
console.log(removed9) // J

The substring() method can also be used to remove the last N characters from a string:

const str = 'JavaScript'

const removed4 = str.substring(0, str.length - 4)
console.log(removed4) // JavaSc

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