How can I correctly focus on 'highlight' events using the tab key on an HTML element?

Question

How can I correctly focus on 'highlight' events using the tab key on an HTML element?

I'm struggling to figure out the event that is triggered when an element gains focus through tab navigation. I want all buttons in the codepen provided to expand to full size when tabbed over. https://codepen.io/anon/pen/YopBaz

Currently, I have achieved the desired effect using the ':hover' pseudo-class for mouse interaction, but I'm unsure how to replicate this behavior for tab-based selection. I attempted to monitor all events (active/focus/hover) on the parent div element when a child element receives tab focus. Unfortunately, this approach did not yield the results I was hoping for. Is there a specific event that bubbles up to the parent element when a child element is highlighted by a tab selection?

The essential CSS snippet is as follows:

 .speed-unit-selector .btn.active, .speed-unit-selector .btn:hover, .speed-unit-selector:active .btn,
.speed-unit-selector:hover .btn,
.speed-unit-selector:focus .btn {
  transform: scale(1, 1);
}

Any insights or advice would be greatly appreciated!

html css

Answer 1

Answer №1

When you use the tab key for navigation, it triggers the :focus event on the elements. By using the tabindex="value" attribute, you can also change the order in which elements are 'focused'.

It's important to note that the tab key will not focus on elements that do not support the :focus event or do not have a tabindex attribute set. For example, if you want to be able to focus on a p element, you'll need to add a tabindex to it.

Check out the code snippet below:

button:focus {
  background: red;
}
p:focus {
  background: blue;
}

<button tabindex="1">
BUtton
</button>
<button tabindex="3">
BUtton    
</button>
<button tabindex="2">
BUtton
</button>

<p tabindex="4">
aaaaaaaaaaaaaaaaa
</p>

Answer 2

When you use the tab key for navigation, it triggers the :focus event on the elements. By using the tabindex="value" attribute, you can also change the order in which elements are 'focused'.

It's important to note that the tab key will not focus on elements that do not support the :focus event or do not have a tabindex attribute set. For example, if you want to be able to focus on a p element, you'll need to add a tabindex to it.

Check out the code snippet below:

button:focus {
  background: red;
}
p:focus {
  background: blue;
}

<button tabindex="1">
BUtton
</button>
<button tabindex="3">
BUtton    
</button>
<button tabindex="2">
BUtton
</button>

<p tabindex="4">
aaaaaaaaaaaaaaaaa
</p>

Answer 3

Answer №2

Give this a try in your script and see the results.

.speed-unit-selector .btn:focus{
  transform: scale(1, 1) !important;
  background: #fff;
  color: #000;  
  opacity: 1;
}

Answer 4

Give this a try in your script and see the results.

.speed-unit-selector .btn:focus{
  transform: scale(1, 1) !important;
  background: #fff;
  color: #000;  
  opacity: 1;
}

How can I correctly focus on 'highlight' events using the tab key on an HTML element?

Answer №1

Answer №2

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