# Fold Effect
# Fold Effect
Categories: [Effects](http://www.css88.com/jquery-ui-api/category/effects/ "View all posts in Effects")
**Description:** 通过折叠形式来隐藏或显示一个元素。
- #### fold
- **size** (default: `15`)Type: [Number](http://api.jquery.com/Types/#Number) or [String](http://api.jquery.com/Types/#String)折叠元素的尺寸。
- **horizFirst** (default: `false`)Type: [Boolean](http://api.jquery.com/Types/#Boolean)当先从水平方向开始隐藏时,记住,当显示时,方向是和隐藏时相反的。(愚人码头注:即如果隐藏时为从右至左,那么显示时为从左至右。)
## Example:
#### 使用折叠特效切换显示div。
```
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>fold demo</title>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css">
<style>
#toggle {
width: 100px;
height: 100px;
background: #ccc;
}
</style>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
</head>
<body>
<p>Click anywhere to toggle the box.</p>
<div id="toggle"></div>
<script>
$( document ).click(function() {
$( "#toggle" ).toggle( "fold" );
});
</script>
</body>
</html>
```
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