I have a disabled button and I want to display a message in the other side of the page (NOT A CHILD ELEMENT) when I hover this button. How to do that? I already tried using jquery and CSS but it doens't work:

#deleteManagerWarning{
  display: none;
  color: red;
  float: right;
}

#disabledCloseBtn:hover   #deleteManagerWarning{
  display: block;
}

and

  $("#disabledCloseBtn").hover(function(){
    $("#deleteManagerWarning").css("display", "block");
  });

This is the html button:

<button type="submit" 
 
id="disabledCloseBtn" 
name="disabledCloseBtn" 
disabled 
aria-label="Close">

This is the html message:

<span id="deleteManagerWarning">Unable to delete Manager</span>

CodePudding user response：

If the two elements are far separated from each other in the markup, CSS won't help you-- you need a relationship like descendent or adjacent. In this case, your jQuery would be working if the button were not disabled:

$(document).ready(() => {
 $("#disabledCloseBtn").hover(function(){
    console.log('hover');
    $("#deleteManagerWarning").css("display", "block");
  });
 });

#deleteManagerWarning {
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <button type="submit"  id="disabledCloseBtn" name="disabledCloseBtn" aria-label="Close">
  Close
</button>
</div>
<div>
  <p>Dummy content</p>
  <p>Dummy content</p>
  <p>Dummy content</p>
  <span id="deleteManagerWarning">Unable to delete Manager</span>
</div>

However, it appears that jQuery does not (or cannot) fire the hover event for a disabled button-- the following example is exactly the same as the first except the button is disabled:

$(document).ready(() => {
 $("#disabledCloseBtn").hover(function(){
    console.log('hover');
    $("#deleteManagerWarning").css("display", "block");
  });
 });

#deleteManagerWarning {
  display: none;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <button type="submit"  id="disabledCloseBtn" name="disabledCloseBtn" disabled aria-label="Close">
  Close
</button>
</div>
<div>
  <p>Dummy content</p>
  <p>Dummy content</p>
  <p>Dummy content</p>
  <span id="deleteManagerWarning">Unable to delete Manager</span>
</div>

In this case, you have a few alternative options you can employ:

1. Fake the disabled state on the button: reduce the opacity, remove click handlers, make sure you update the ARIA messaging to report the button as disabled. (You could also fake the button entirely using a <div> and wiring up all the accessibility and interactivity, but this would be much more difficult and to a similar effect). This may actually be more accessible, because a disabled button isn't focusable by keyboard.
2. Use a different hover target: Instead of the button, try using the wrapper around the button, or float something invisible over the button.

Here is an example faking the disabled state:

$(document).ready(() => {
  $("#disabledCloseBtn").hover(
    function() {
      $("#deleteManagerWarning").css("display", "block");
    },
    function() {
      $("#deleteManagerWarning").css("display", "none");
    },
  );
});

#deleteManagerWarning {
  display: none;
}

.disabled {
  opacity: 0.5;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <button type="submit"  id="disabledCloseBtn" name="disabledCloseBtn" aria-label="Close">
  Close
</button>
</div>
<div>
  <p>Dummy content</p>
  <p>Dummy content</p>
  <p>Dummy content</p>
  <span id="deleteManagerWarning">Unable to delete Manager</span>
</div>

Just make sure you are figuring out a way to communicate that it is disabled to assistive technologies -- and remember, content that is popping into the existence on the other side of the page probably needs to be appropriately announced to screen readers.

CodePudding user response：

Problem

It appears that JavaScript and jQuery do not detect disabled tags (I learned something today).

CSS has no problem:

Figure I

<button class='A'>A</button>
<output class='A'>HELLO WORLD!</output>

Figure II

button.A:hover:disabled   output.A {
  display: inline-block;
} 
/*