# Method Overrides jQuery UI 重载了几个内置的 jQuery 方法，以提供额外的功能。当使用这些重载时，确保加载 jQuery UI 是很重要的。如果 jQuery UI 未加载，方法依然存在，但预期的功能将不可用，这会导致难以追踪的错误。 Also in: [Effects](http://www.css88.com/jquery-ui-api/category/effects/ "View all posts in Effects") | [Effects Core](http://www.css88.com/jquery-ui-api/category/effects-core/ "View all posts in Effects Core") ## .addClass() 当动画样式改变时，为匹配的元素集合内的每个元素添加指定的 Class。 Also in: [Methods](http://www.css88.com/jquery-ui-api/category/methods/ "View all posts in Methods") | [UI Core](http://www.css88.com/jquery-ui-api/category/ui-core/ "View all posts in UI Core") ## .focus() 异步聚焦到一个元素。 Also in: [Effects](http://www.css88.com/jquery-ui-api/category/effects/ "View all posts in Effects") | [Effects Core](http://www.css88.com/jquery-ui-api/category/effects-core/ "View all posts in Effects Core") | [Methods](http://www.css88.com/jquery-ui-api/category/methods/ "View all posts in Methods") ## .hide() 使用自定义效果来隐藏匹配的元素。 Also in: [Methods](http://www.css88.com/jquery-ui-api/category/methods/ "View all posts in Methods") | [Utilities](http://www.css88.com/jquery-ui-api/category/utilities/ "View all posts in Utilities") ## .position() 相对另一个元素定位一个元素。 Also in: [Effects](http://www.css88.com/jquery-ui-api/category/effects/ "View all posts in Effects") | [Effects Core](http://www.css88.com/jquery-ui-api/category/effects-core/ "View all posts in Effects Core") ## .removeClass() 当动画样式改变时，为匹配的元素集合内的每个元素移除指定的 Class。 Also in: [Effects](http://www.css88.com/jquery-ui-api/category/effects/ "View all posts in Effects") | [Effects Core](http://www.css88.com/jquery-ui-api/category/effects-core/ "View all posts in Effects Core") | [Methods](http://www.css88.com/jquery-ui-api/category/methods/ "View all posts in Methods") ## .show() 使用自定义效果来显示匹配的元素。 Also in: [Effects](http://www.css88.com/jquery-ui-api/category/effects/ "View all posts in Effects") | [Effects Core](http://www.css88.com/jquery-ui-api/category/effects-core/ "View all posts in Effects Core") | [Methods](http://www.css88.com/jquery-ui-api/category/methods/ "View all posts in Methods") ## .toggle() 使用自定义效果来显示或隐藏匹配的元素。 Also in: [Effects](http://www.css88.com/jquery-ui-api/category/effects/ "View all posts in Effects") | [Effects Core](http://www.css88.com/jquery-ui-api/category/effects-core/ "View all posts in Effects Core") ## .toggleClass() 当动画样式改变时，根据 Class 是否存在以及 switch 参数的值，为匹配的元素集合内的每个元素添加或移除一个或多个 Class。