cursor is jumping when pressing the arrow keys

Question

I have a textbox, where a forbidden character cant be typed. #.

This works, however, when the textbox is filled in with data, and I put the focus on the middle of th

Answer 1

This is a bit unpleasant, and I'm not 100% happy, but it solves all the given issues that you've had...

$("[id$=txtClient]").keyup(function (e) {
    var text = $(this).val();
    if (text.indexOf("#") > -1) {
        text = text.replace("#", "");
        $(this).val(text);
    }
});

Here's a jsFiddle example...

http://jsfiddle.net/E4cBK/