Can JavaScript String Function charAt() look for multiple characters?

Question

How can I make my string.charAt() look for multiple characters at once? I'm looking to reduce the lines of code I have in my program, just wondering how I can fit multiple characters into one line.

Example: normally I would type

(string.charAt(4));

if i wanted to find the character at spot 4, what if I wanted to find the character at spots 3-5? would i write

(string.charAt(3-5));

Thanks in advance!

Q: Can string.charAt() look for multiple characters at once? A: No. String.charAt() doesn't "look at" ANY "characters". It turns THE character at THE SPECIFIED "index". Q: Could you show us an example string, what describe what you'd like to "look for"? I suspect maybe you can use a regex — paulsm4
– paulsm4, Commented Aug 9, 2020 at 23:14
the java language does not have a charAt method for the string class — Mister Jojo
– Mister Jojo, Commented Aug 9, 2020 at 23:24
Riley, you may want to edit your title to reflect "Javascript" as opposed to "Java". Both exist and differ quite a bit. The charAt() method belongs to Javascript. And I second @paulsm4 request to show us an example. This will help you find your answer. — Josh Cronkhite
– Josh Cronkhite, Commented Aug 9, 2020 at 23:41

sonEtLumiere · Accepted Answer · 2020-08-10 01:42:37Z

1

You can use slice() method if you want to get a portion of a string:

let string = 'Hello World'
console.log(string.slice(2, 6));

If you need to get only the letters in specific indexes you can do this:

function getLetters(str, ...args){
    let result = '';
    for(let index in str){
        result += str.charAt(args[index]);
    }
    return result
}

let indexes = [2, 5, 6, 8, 9];
console.log(getLetters(string, ...indexes));

edited Aug 10, 2020 at 1:42

answered Aug 10, 2020 at 1:00

sonEtLumiere

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