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

No need to test, you can directly process the text box content:

textBoxContent = textBoxContent.replace(/[^\x20-\x7E]+/g, '');

where the range \x20-\x7E covers the printable part of the ascii table.

Example with your code:

$('.jsTextArea').blur(function() {
    this.value = this.value.replace(/[^\x20-\x7E]+/g, '');
});