Problem Statement
given a string, remove the character at specific index from the string
Solution
to remove a character at specific index from the given string in JavaScript, use String.substr() method. get the substring that is prior to the index, and the substring after the index. join these two substrings
str.substr(0, index - 1) + str.substr(index)
Program
remove character at index=8
from the string str
let str = 'helloworld';
let index = 8;
let output = str.substr(0, index - 1) + str.substr(index);
console.log(output);