jQuery custom animation function
jQuery animation - animate() method
The jQuery animate() method is used to create custom animations.
Syntax:
$(selector).animate({params},speed,callback);Required params parameters define the CSS properties that form the animation.
The optional speed parameter specifies the duration of the effect. It can take the following values: "slow", "fast", or milliseconds.
The optional callback parameter is the name of the function to be executed after the animation is completed.
The following example demonstrates a simple application of the animate() method; it moves the <div> element to the left until the left attribute is equal to 250 pixels:
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("div").animate({left:'250px'});
});
});
</script>
</head>
<body>
<button>开始动画</button>
<p>默认情况下，所有 HTML 元素的位置都是静态的，并且无法移动。如需对位置进行操作，记得首先把元素的 CSS position 属性设置为 relative、fixed 或 absolute。</p>
<div style="background:#98bf21;height:100px;width:100px;position:absolute;">
</div>
</body>
</html>
Tip: By default, all HTML elements have a static position and cannot be moved. If you want to operate on position, remember to first set the element's CSS position property to relative, fixed or absolute!
jQuery animate() - Manipulating multiple properties
Please note that multiple properties can be used at the same time during the animation generation process:
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("div").animate({
left:'250px',
opacity:'0.5',
height:'150px',
width:'150px'
});
});
});
</script>
</head>
<body>
<button>开始动画</button>
<p>默认情况下，所有 HTML 元素的位置都是静态的，并且无法移动。如需对位置进行操作，记得首先把元素的 CSS position 属性设置为 relative、fixed 或 absolute。</p>
<div style="background:#98bf21;height:100px;width:100px;position:absolute;">
</div>
</body>
Tip: You can use the animate() method to manipulate all CSS properties. However, there is one important thing to remember: when using animate(), you must use the Camel tag All property names cannot be written, for example, paddingLeft must be used instead of padding-left, marginRight must be used instead of margin-right, etc. Also, color animation is not included in the core jQuery library. If you need to generate color animations, you need to download the Color Animations plug-in from jQuery.com.
jQuery animate() - Using relative values
You can also define relative values (the value is relative to the element's The current value). You need to add += or -= in front of the value:
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("div").animate({
left:'250px',
height:'+=150px',
width:'+=150px'
});
});
});
</script>
</head>
<body>
<button>开始动画</button>
<p>默认情况下，所有 HTML 元素的位置都是静态的，并且无法移动。如需对位置进行操作，记得首先把元素的 CSS position 属性设置为 relative、fixed 或 absolute。</p>
<div style="background:#98bf21;height:100px;width:100px;position:absolute;">
</div>
</body>
</html>
jQuery animate() - Use predefined values
##You can even animate the property's value to "show", "hide" or "toggle":
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("div").animate({
height:'toggle'
});
});
});
</script>
</head>
<body>
<button>开始动画</button>
<p>默认情况下，所有 HTML 元素的位置都是静态的，并且无法移动。如需对位置进行操作，记得首先把元素的 CSS position 属性设置为 relative、fixed 或 absolute。</p>
<div style="background:#98bf21;height:100px;width:100px;position:absolute;">
</div>
</body>
</html>
jQuery animate() - Using the queue function
By default, jQuery provides a queue function for animation. This means that if you write multiple animate() calls after each other, jQuery creates an "internal" queue containing those method calls. Then run these animate calls one by one. Example: If you want to perform different animations after each other, then we want to utilize the queue function
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-3.1.1.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
var div=$("div");
div.animate({height:'300px',opacity:'0.4'},"slow");
div.animate({width:'300px',opacity:'0.8'},"slow");
div.animate({height:'100px',opacity:'0.4'},"slow");
div.animate({width:'100px',opacity:'0.8'},"slow");
});
});
</script>
</head>
<body>
<button>开始动画</button>
<p>默认情况下，所有 HTML 元素的位置都是静态的，并且无法移动。如需对位置进行操作，记得首先把元素的 CSS position 属性设置为 relative、fixed 或 absolute。</p>
<div style="background:#98bf21;height:100px;width:100px;position:absolute;">
</div>
</body>
</html>
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