The function accepts 3 inputs: (string (str), starting point in string (index), and how many characters to remove after that (count)).
function removeFromString(str, index, count) {
let newStr = '';
for (let i = index; i <= (index + count); i++) {
newStr = str.replace(str[i], '');
}
return newStr;
}
It's returning outputs that may remove one character at most, but nothing more than that, which is not what I am trying to achieve.
What I want is a function that when called, will return a function without the characters specified from the index and count parameters.
With
newStr = str.replace(str[i], '')
you're always taking str as the base string to replace - which is the original input. You're never using the newStr except after the final iteration; all replacements made before then are lost.
Another problem is that str.replace(str[i], '') will replace the same character if it exists earlier in the string, rather than at the index you want.
Slice the string's indicies instead.
const removeFromString = (str, index, count) => (
str.slice(0, index + 1) + str.slice(index + count + 1)
);
console.log(removeFromString('123456', 2, 2));Is just a matter of use substring method from JS.
Substring method definition from Mozilla Developer Network
function removeFromString(str, index, count) {
return str.substring(0, index) + str.substring(index+count);
}
console.log(removeFromString('fofonka', 2, 2));