Javascript RegEx Dollar Sign

Question

I have a function deleting all Dollar Signs from a string.

Can you tell me why

<h1 id="a"></h1>
<script>
function sec_filter_input(s){
        s = s.replace(/$/g, " ");
        return s;
    }
 
 document.getElementById('a').innerHTML = "a" + sec_filter_input("") + "a";
</script>

Returns "a a" (with a space between)? There is no $-Sign in the string, so the expected output is "aa" (without space"

Can you help me?

Does this answer your question? [Reference - What does this regex mean?](https://stackoverflow.com/questions/22937618/reference-what-does-this-regex-mean) — ASDFGerte, Jul 22 '20 at 12:53
Escape dollar sign: `s.replace(/\$/g, '')`, it is a special character in RegExp — Yevgen Gorbunkov, Jul 22 '20 at 12:54
@Pascalus : you're welcome, feel free to delete your question — Yevgen Gorbunkov, Jul 22 '20 at 12:56

score -1 · Accepted Answer · answered Jul 22 '20 at 13:05

Here is what you want:

function sec_filter_input(s) {
    s = s.replace(/\$/g, " ");
    return s;
}

document.getElementById('a').innerHTML = "a" + sec_filter_input("") + "a";

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1 id="a"></h1>
</body>
</html>

Javascript RegEx Dollar Sign

1 Answers1