remove a character from a string at a specific index in javascript

There are multiple ways to remove a character from a string at a specific index in Javascript. Here are three such methods:

Method 1: Using substr() function

The substr() function can be used to extract a specified part of a string. We can use the substr() function to extract the part of the string before and after the character to be removed, and then concatenate the two substrings.

index.tsx
let str = "hello world";
let index = 6;
str = str.substr(0, index) + str.substr(index + 1);
console.log(str); // Output: "helloorld"
133 chars
5 lines

Method 2: Using splice() function

The splice() function can be used to add or remove elements from an array. We can use this function on the characters of the string, by converting the string into an array of characters.

index.tsx
let str = "hello world";
let index = 6;
let arr = str.split(''); // Splitting the string into an array
arr.splice(index, 1); // Removing the character at the specified index
str = arr.join(''); // Joining the array back into a string
console.log(str); // Output: "helloorld"
275 chars
7 lines

Method 3: Using slice() function

The slice() function can be used to extract a specified part of a string, similar to the substr() function. We can use the slice() function to extract the part of the string before and after the character to be removed, and then concatenate the two parts.

index.tsx
let str = "hello world";
let index = 6;
str = str.slice(0, index) + str.slice(index + 1);
console.log(str); // Output: "helloorld"
131 chars
5 lines