Match non printable/non ascii characters and remove from text

Question

My JavaScript is quite rusty so any help with this would be great. I have a requirement to detect non printable characters (control characters like SOH, BS etc) as well exte

Answer 1

You have to assign a pattern (instead of string) into isNonAscii variable, then use test() to check if it matches. test() returns true or false.

$(document).ready(function() {
    $('.jsTextArea').blur(function() {
        var pattern = /[^\000-\031]+/gi;
        var val = $(this).val();
        if (pattern.test(val)) {
            alert("It matched");
        }
        else {
            alert("It did NOT match");
        }
    });
});

Check jsFiddle