jquery + ie8: backspace not being detected?

I want to disable backspace in one of my inputfields so I wrote the following jquery:

$("#noBackspacesHere").keypress(function(e){
            if(e.which == "8开发者_开发知识库"){
                return false;
            }
        });

This works fine in firefox, but doesn't seem to work in ie8. I've already read that .keyCode has issues so that's why I went for .which.

@Jonathon Bolster's code doesn't work for Opera.

This should work in Opera, IE, FF and Chrome.

$("#noBackspacesHere").bind("keypress keydown", function(e) {
    if (e.which == 8) {
        e.preventDefault();
    }
});

Also, e.which is the preferred way to check for key codes because jQuery normalizes the event object so that which will always be present no matter what browser you use.

I just played around with the keyboard events and keydown will help you here:

$("#noBackspacesHere").keydown(function(e) {
    if (e.which == 8) {
        return false;
    }
});

Example: http://jsfiddle.net/jonathon/7xBRf/

I did typeof(e.which) and it said that it's a number, so you don't need the quotes around it. I've tested this in IE8, Chrome and FF and it seems to work for them.