jquery stop css animation

In web page production, animation effects are a very common element, and CSS animation is one of the more popular methods. However, in some cases, it is necessary to stop the ongoing CSS animation. In this case, jquery needs to be used to achieve it. This article will introduce how to use jquery to stop css animation.

1. What is CSS animation

The animation effect in CSS3 is defined by using @keyframes rules. A variety of animation effects can be achieved by adding attributes such as keyframes and animation time to elements.

For example, we can define the following CSS code to implement a moving animation from left to right:

@keyframes move-right {
  0% { left: 0; }
  100% { left: 100px; }
}

#box {
  position: absolute;
  left: 0;
  animation: move-right 2s ease-out forwards;
}

In the above code, we define a file named "move-right" animation, which sets the element's left position property from 0% to 100% keyframes. Then we apply this animation to the element with the id "box", and set the animation time to 2 seconds, the easing effect to "ease-out", and finally retain the final state of the animation on the element.

2. Stop CSS animation

Normally, CSS animation will loop until the end according to the animation time and rules we define. But sometimes we need to stop the animation while it is running. In this case, we need to use jquery to achieve it.

First, we need to add a button or other trigger to the element that can stop the animation, and add an event listener to the trigger. For example, in the code below, we create a div element containing a button and add a "click" event listener for the button:

<div id="box" class="animated">
  <button id="stop-btn">停止动画</button>
</div>

Next, we need to define a jquery event listener, in Stop the animation when the user clicks the button. Pass the ID of the animated element to the event listener, and then use jquery's "stop()" method to stop the animation. For example, in the following code, we create a button named "stop-btn" and add a click event listener to it:

$(document).ready(function() {
  $('#stop-btn').click(function() {
    $('#box').stop();
  });
});

In the above code, we use jquery's "ready ()" method to ensure that the page has been loaded, and then added a click event listener for the button element. When the user clicks the button, jquery stops the ongoing animation on the element named "box". It should be noted that if we want to replay the animation, we need to use jquery's "animate()" method to restart the animation.

3. Things to note when using jquery to stop CSS animation

When using jquery to stop CSS animation, you need to pay attention to the following points:

1. We can use it at any time jquery to stop a playing CSS animation, whether during the animation or after the animation ends.

2. We can use the "stop()" method to stop all animations on the specified element, or we can use the "stop(true)" method to stop the currently playing animation and immediately go to the final state, or use The "stop(false)" method stops the currently playing animation and leaves it in its current state.

3. When we stop CSS animation, all defined CSS animation properties and keyframes will be removed immediately. This means that if we want to replay the animation, we need to re-add the CSS properties and keyframes.

4. Summary

Using jquery to stop CSS animation is a very convenient way to easily stop the animation that is playing and restart it when needed. However, in actual use, you need to pay attention to various details. For example, when defining animations, you need to clarify the details of playback and stop, and you also need to know the various statuses and attributes of animation playback. This article mainly introduces how to use jquery to stop the playing CSS animation. I hope it will be helpful to everyone.

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