Task:

I need to check, if from given string(characters) document can be made(document) if at least 1 character is missing in characters then it is not possible to create document

Occuring problem:

When comparing 'a' and 'A' with [].includes method, it returns 'false' in the function.

Code:

function generateDocument(characters, document) {
    document = Array.from(new Set(document));
    characters = Array.from(new Set(characters));

    for(let i = 0; i < document.length; i++) {
        if(characters.includes(characters[i]) == false)
            return false;
    }
    return true;
}

console.log(generateDocument("A","a"));

Expected result: To return false, because 'a' and 'A' are not equal