Is it possible to create a condition on the presence of a css property?

Question

css

those. If an object with id="fullpage" has an opacity property of 0.2, does any click on the page make the opacity equal to 1 ?

Answer 1

Through jQuery for example:

if ($('#fullpage').css('opacity') == '0.2'){
  $('#fullpage').css('opacity', 1);
}

Answer 2

In jQuery it would look something like this

$(document).on("click",function(){
    $("#fullpage").css("opacity","1");
});

JSFiddle