JavaScript - remove character from string at specific index

In this article, we would like to show you how to remove a character from a string at a specific index in JavaScript.

Quick solution:

// ONLINE-RUNNER:browser;

let text = 'ABC';
const index = 1;

text = text.substring(0, index) + text.substring(index + 1);

console.log(text);

Note:

This approach doesn't remove the original string, it makes a copy ignoring the given character and overwriting the text.

Reusable function

In this example, we create a reusable function that takes 2 arguments:

1. text - the string we want to remove a character from,
2. index - the index we want to remove.

// ONLINE-RUNNER:browser;

const removeCharacter = (text, index) => {
    return text.substring(0, index) + text.substring(index + 1);
};


// Usage example:

const text = 'ABC';

console.log(removeCharacter(text, 0));
console.log(removeCharacter(text, 1));
console.log(removeCharacter(text, 2));

Output:

BC
AC
AB

References

1. String.prototype.substring() - JavaScript | MDN