Question

I have a few predefined styles in my css based on an elements attribute. If i update the attribute’s value to something new that also has a predefined style the style is applied in FF and Chrome but not IE. See example and type in input field please.

JS:

$('input').on('keypress', function(){
    var l = parseInt($(this).attr('level'), 10) + 1;
    $(this).attr('level', l);
});

CSS:

input[level="0"]{background:red;}
input[level="1"]{background:blue;}
input[level="2"]{background:green;}
input[level="3"]{background:black;}

http://jsfiddle.net/ce6S4/

Any help is appreciated, thank you.

EDIT:
works with IE 9 but not <= 8

Answer 1

It’s an IE-bug. Notice that the element is rendered correctly when you resize the window.

Trigger the reflow by setting the class name:

this.className = this.className; // Or .addClass(' ');

Demo: http://jsfiddle.net/ce6S4/6/

$('input').on('keypress', function(){
    var l = parseInt($(this).attr('level'), 10) + 1;
    $(this).attr('level', l).addClass(' ');
});