What are the limitations of using a CSS transition alongside a separate animation created with jQuery's animate method?

Question

What are the limitations of using a CSS transition alongside a separate animation created with jQuery's animate method?

I am facing an issue with moving and flipping a button simultaneously when clicked. I have set up two animations to happen at the same time, each with the same duration. However, only the CSS scale transform seems to be working while using both jQuery's animate method and the CSS transition effect. When I remove one of the animations, the other one works perfectly.

// identifying elements
var button = $("button");

// handling click event
button.on("click", function() {
  button.css({
    "transform": "scaleX(0)"
  });
  
// the problem: the following animation is not visible
  button.animate({
    "top": "-100px" // I even tried without "px"
  }, 0.15 * 1000);
});

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;
  
  position: relative;
  transition: all 0.15s;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <p>Hello World</p>
  <button>Click me</button>
</div>

The JSFiddle illustrating this issue can be found here.

Appreciate any help on this matter.

javascript jquery html css

Answer 1

Answer №1

Optimize your transition property by using only the necessary values, such as transform 0.15s instead of all 0.15s

// locate elements
var button = $("button");

// click event handling
button.on("click", function() {
  button.css({
    "transform": "scaleX(0)"
  });

  // bug: animation won't show
  button.animate({
    "top": "-100px"
  }, 0.15 * 1000);
});

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;

  position: absolute;
  transition: transform 0.15s; /* updated */
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <p>Hello Universe</p>
  <button>Press Here</button>
</div>

Answer 2

Optimize your transition property by using only the necessary values, such as transform 0.15s instead of all 0.15s

// locate elements
var button = $("button");

// click event handling
button.on("click", function() {
  button.css({
    "transform": "scaleX(0)"
  });

  // bug: animation won't show
  button.animate({
    "top": "-100px"
  }, 0.15 * 1000);
});

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;

  position: absolute;
  transition: transform 0.15s; /* updated */
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <p>Hello Universe</p>
  <button>Press Here</button>
</div>

Answer 3

Answer №2

While defining your button style with transition: all 0.15s;, keep in mind that it will impact the top property as well. Consequently, the top animation occurs shortly after the CSS manipulation and each step of the top animation undergoes a transition.

The top animation occurs slightly after the CSS manipulation.
Each step of the top animation experiences a transition effect.

This situation creates a potential racing condition where the top animation might go unnoticed due to the rapid pace of transitions. Furthermore, jQuery's animation also incorporates an easing effect over every step.

If no easing function is specified when using $.fn.animate, it defaults to swing, defined as:

 function( p ) {
    return 0.5 - Math.cos( p * Math.PI ) / 2;
 }

Here, the parameter p ranges from 0 to 1.

In this scenario, you are instructing jQuery to change the top property from 0 to -100 over 150ms. Typically, the animation interval is about 13ms, but for simplicity, we assume it to be precisely 15ms resulting in 10 animation steps. With the swing easing, the first step computes to:

 100 * (0.5 -  Math.cos( (0.1 * Math.PI ) / 2) = 2.45

To summarize, by utilizing transition: all 0.15s and disregarding the race condition, clicking the button would horizontally scale down to 0 and move upwards by 2.45px within a duration of 0.15s.

Alternatively, by solely transitioning the transform property while leaving the top transition to jQuery, you can observe both animations occurring simultaneously.

In the provided code snippet, I extended the time frame to 1s, introduced console statements at each stage, and featured multiple buttons – one with regular button styles, another transitioning only transform, and a third transitioning both transform and top without using jQuery animations.

(previously included JavaScript and CSS code snippets)

Answer 4

While defining your button style with transition: all 0.15s;, keep in mind that it will impact the top property as well. Consequently, the top animation occurs shortly after the CSS manipulation and each step of the top animation undergoes a transition.

The top animation occurs slightly after the CSS manipulation.
Each step of the top animation experiences a transition effect.

This situation creates a potential racing condition where the top animation might go unnoticed due to the rapid pace of transitions. Furthermore, jQuery's animation also incorporates an easing effect over every step.

If no easing function is specified when using $.fn.animate, it defaults to swing, defined as:

 function( p ) {
    return 0.5 - Math.cos( p * Math.PI ) / 2;
 }

Here, the parameter p ranges from 0 to 1.

In this scenario, you are instructing jQuery to change the top property from 0 to -100 over 150ms. Typically, the animation interval is about 13ms, but for simplicity, we assume it to be precisely 15ms resulting in 10 animation steps. With the swing easing, the first step computes to:

 100 * (0.5 -  Math.cos( (0.1 * Math.PI ) / 2) = 2.45

To summarize, by utilizing transition: all 0.15s and disregarding the race condition, clicking the button would horizontally scale down to 0 and move upwards by 2.45px within a duration of 0.15s.

Alternatively, by solely transitioning the transform property while leaving the top transition to jQuery, you can observe both animations occurring simultaneously.

In the provided code snippet, I extended the time frame to 1s, introduced console statements at each stage, and featured multiple buttons – one with regular button styles, another transitioning only transform, and a third transitioning both transform and top without using jQuery animations.

(previously included JavaScript and CSS code snippets)

Answer 5

Answer №3

If you want to check out the code on JS Fiddle for a seamless animation experience, please click on the link below:

https://jsfiddle.net/harshsetia/tvcb4mso/8/

Answer 6

If you want to check out the code on JS Fiddle for a seamless animation experience, please click on the link below:

https://jsfiddle.net/harshsetia/tvcb4mso/8/

Answer 7

Answer №4

Make sure to set your button position to absolute!

var button = $("button");

// handle click
button.on("click", function() {
  button.css({
    "transform": "scaleX(0)"
  });

    // there is a bug: the animation below is not visible
  button.animate({top: "-100px"}, 0.15 * 1000);
});

button{
  position:absolute;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <p>Hello World</p>
  <button>Click me</button>
</div>

Answer 8

Make sure to set your button position to absolute!

var button = $("button");

// handle click
button.on("click", function() {
  button.css({
    "transform": "scaleX(0)"
  });

    // there is a bug: the animation below is not visible
  button.animate({top: "-100px"}, 0.15 * 1000);
});

button{
  position:absolute;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div>
  <p>Hello World</p>
  <button>Click me</button>
</div>

What are the limitations of using a CSS transition alongside a separate animation created with jQuery's animate method?

Answer №1

Answer №2

Answer №3

Answer №4

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