What is the best way to implement a sliding animation for a toggle button?

Question

What is the best way to implement a sliding animation for a toggle button?

Currently, I am working on a toggle bar element that is functioning correctly in terms of styling the toggled button. However, I would like to add more animation to enhance the user experience.

The concept is to have the active button slide to the newly selected button for visual appeal. This means incorporating a sliding animation into the current code.

I am facing difficulty in figuring out how exactly to implement this feature. It seems that simply adding background and styles to the active element will not suffice; a floating or sliding box may be necessary.

While I prefer not to have someone implement it for me, I could use some guidance on where to start. Should I work with pseudo-elements? How can I ensure that the white button background element stretches to the width of the word behind it?

Although this is primarily a CSS-related question, I am unsure of how to initiate the implementation process.

If anyone has any advice, tips, or can point me in the right direction on how to achieve this effect, I would greatly appreciate it! Cheers!

Feel free to check out what I've built so far in CodeSandbox

css vue.js sass css-animations

Answer 1

Answer №1

To achieve a visually appealing effect of a white block moving behind text but in front of backgrounds, you can create a gap by using pseudo elements with lower z index to apply background colors onto elements.

By clicking on a button, you can calculate the distance the white block needs to move from the previously clicked button to reach the current one, as well as adjust its width accordingly.

In this code snippet, the 'white block' is actually represented by a pseudo element attached to the currently clicked button. This allows for easy determination of its final position directly under the active button.

const buttons = document.querySelectorAll('button');

function clicked(e) {
  const el = e.target;
  const prevEl = document.querySelector('button.animate');
  const x = (prevEl == null) ? '0%' : (prevEl.getBoundingClientRect().x - el.getBoundingClientRect().x) + 'px';
  const w2 = window.getComputedStyle(el).width;
  const w1 = (prevEl == null) ? 0 : window.getComputedStyle(prevEl).width;

  buttons.forEach(button => {
    button.classList.remove('animate');
  });
  el.style.setProperty('--x', x);
  el.style.setProperty('--w1', w1);
  el.style.setProperty('--w2', '100%');
  el.classList.add('animate');
}
buttons.forEach(button => {
    button.addEventListener('click', clicked);
  }

);

nav {
  display: inline-block;
  position: relative;
}

nav::before {
  content: '';
  position: absolute;
  background-color: gold;
  width: 100%;
  height: 100%;
  left: 0 top: 0;
  z-index: -3;
}

button {
  margin: 2vmin;
  background-color: transparent;
  position: relative;
}

button::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-color: brown;
  z-index: -2;
}

button.animate::after {
  content: '';
  position: absolute;
  background-color: white;
  width: 100%;
  height: 100%;
  animation-name: move;
  animation-duration: 3s;
  animation-fill-mode: forwards;
  top: 0;
  left: 0;
  z-index: -1;
}

@keyframes move {
  0% {
    transform: translateX(var(--x));
    width: var(--w1);
  }
  100% {
    transform: translateX(0);
    width: var(--w2);
  }
}

@keyframes animate {
  0% {}
  100% {
    background-color: white;
  }
}

<nav>
  <button>AAAA</button>
  <button>AA</button>
  <button>AAAAAA</button>
  <button>A</button>
</nav>

Answer 2

To achieve a visually appealing effect of a white block moving behind text but in front of backgrounds, you can create a gap by using pseudo elements with lower z index to apply background colors onto elements.

By clicking on a button, you can calculate the distance the white block needs to move from the previously clicked button to reach the current one, as well as adjust its width accordingly.

In this code snippet, the 'white block' is actually represented by a pseudo element attached to the currently clicked button. This allows for easy determination of its final position directly under the active button.

const buttons = document.querySelectorAll('button');

function clicked(e) {
  const el = e.target;
  const prevEl = document.querySelector('button.animate');
  const x = (prevEl == null) ? '0%' : (prevEl.getBoundingClientRect().x - el.getBoundingClientRect().x) + 'px';
  const w2 = window.getComputedStyle(el).width;
  const w1 = (prevEl == null) ? 0 : window.getComputedStyle(prevEl).width;

  buttons.forEach(button => {
    button.classList.remove('animate');
  });
  el.style.setProperty('--x', x);
  el.style.setProperty('--w1', w1);
  el.style.setProperty('--w2', '100%');
  el.classList.add('animate');
}
buttons.forEach(button => {
    button.addEventListener('click', clicked);
  }

);

nav {
  display: inline-block;
  position: relative;
}

nav::before {
  content: '';
  position: absolute;
  background-color: gold;
  width: 100%;
  height: 100%;
  left: 0 top: 0;
  z-index: -3;
}

button {
  margin: 2vmin;
  background-color: transparent;
  position: relative;
}

button::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-color: brown;
  z-index: -2;
}

button.animate::after {
  content: '';
  position: absolute;
  background-color: white;
  width: 100%;
  height: 100%;
  animation-name: move;
  animation-duration: 3s;
  animation-fill-mode: forwards;
  top: 0;
  left: 0;
  z-index: -1;
}

@keyframes move {
  0% {
    transform: translateX(var(--x));
    width: var(--w1);
  }
  100% {
    transform: translateX(0);
    width: var(--w2);
  }
}

@keyframes animate {
  0% {}
  100% {
    background-color: white;
  }
}

<nav>
  <button>AAAA</button>
  <button>AA</button>
  <button>AAAAAA</button>
  <button>A</button>
</nav>

Answer 3

Answer №2

If you're starting from scratch and want the flexibility to adjust the position of a white box in relation to a yellow box (using position: relative or absolute), one approach is to hardcode a function that takes the desired box coordinates. This function would then check if the white box is already in the correct place, and if not, move it x pixels in the right direction. The function could call itself recursively with a timeout, gradually moving the box closer to its target position.

This method essentially involves making small adjustments every few milliseconds until the white box reaches its final destination. By moving the box once every (1000/24)ms or less, the movement should appear smooth and fluid.

When it comes to determining the size of the box, you have the option to either hardcode the dimensions or create a function that calculates the appropriate size based on the text content provided.

Answer 4

If you're starting from scratch and want the flexibility to adjust the position of a white box in relation to a yellow box (using position: relative or absolute), one approach is to hardcode a function that takes the desired box coordinates. This function would then check if the white box is already in the correct place, and if not, move it x pixels in the right direction. The function could call itself recursively with a timeout, gradually moving the box closer to its target position.

This method essentially involves making small adjustments every few milliseconds until the white box reaches its final destination. By moving the box once every (1000/24)ms or less, the movement should appear smooth and fluid.

When it comes to determining the size of the box, you have the option to either hardcode the dimensions or create a function that calculates the appropriate size based on the text content provided.

What is the best way to implement a sliding animation for a toggle button?

Answer №1

Answer №2

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