check if a string only has punctuation in it in javascript

Question

In an if statement, I want to check if the string has punctuation in it. If it has punctuation, I want an alert message to pop up.

if((/*regex presumably*/.test(rspace))==true||(/*regex presumably*/.test(sspace))==true){
    alert('Please enter your guessed answer in the fields provided, without punctuation marks.');

    //if only punctuation are entered by the user, an alert message tells them to enter something.
}

Do I need a regex, or is there an automatic method to do this for me? Thanks in advance!

Answer 1

You don't need regex, but that would probably be simplest. It's a straight forward character class, put the characters you want to disallow inside [...], e.g.:

if (/[,.?\-]/.test(rspace)) {
    // ....
}

Note that within [], - is special, so if you want to include it put a backslash before it (as above). Same with backslash, come to that.

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Note that you never need to write == true in a condition. You can if you want, but it serves no purpose from the JavaScript engine's perspective.