How do i change Background color of textbox when onfocus?

Question

i tried this code but its not working.. when i on-focus textbox it shows error

   function ChangeBgColor(obj, evt) 
    { 
            if(evt.type==\"focus\"         


        

Answer 1

Try doing it with jQuery.

$('#div').on('focus', function() {
    $(this).css({background:'blue'});
});