You can remove them by:
$(“.icha0″).css({ ‘background-color’ : ”, ‘opacity’ : ” });
You can use .css() to remove css property as well, like this:
$(“.icha0”).css(“background-color”,””);
$(“.icha0”).css(“opacity”,””);
As mentioned in the jquery documentation:
Setting the value of a style property to an empty string — e.g. $(‘#mydiv’).css(‘color’, ”) — removes that property from an element if it has already been directly applied,