for self development purposes I want to create a function with two parameters - string and an array. It should return a string without the letters given in the array.
function filterLetters(str, lettersToRemove) {
}
const str = filterLetters('Achievement unlocked', ['a', 'e']);
Could someone give me any pointers on how to achieve this?
You can use regex with replaceAll to remove all char from the string.
If you want to consider upper case also then use 'gi' else no need for regex also.
str.replaceAll(char, '')
const removeChar = (str, c) => str.replaceAll(new RegExp(`[${c}]`, "gi"), "");
const run = () => {
const str = "Achievement unlocked";
const chars = ["a", "e"];
let result = str;
chars.forEach((char) => {
result = removeChar(result, char);
});
return result;
};
console.log(run());For each letter to be replaced, remove it (i.e. replace it with ''). When done, return the updated string:
function filterLetters(str, lettersToRemove) {
lettersToRemove.forEach(function(letter){
str = str.replaceAll(letter, '');
})
return str
}
Also see How to replace all occurrences of a string in JavaScript.
One easy way to do this would be to just loop over each value in the array and call the replace string method on str with each indices character. The code below does this.
function filterLetters(str, lettersToRemove){
for (const letter of lettersToRemove){
str = str.replaceAll(letter,"");
}
return str;
}