In-depth analysis of jQuery's selection component_Basic knowledge

1: The Selectable component can make some elements on the user page selectable . The user can select them by clicking on the elements or dragging them, or they can
Hold Ctrl key to select non-contiguous elements
$('.selector').selectable(options);
But in jQuery UI library The ui-selecting and ui-selected class styles are not provided in the theme package, so when using the selection component, you need to create these styles yourself

Copy code The code is as follows:

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2: Filter selection item
can filter sub-elements, and has specified which sub-elements are optional. For this purpose, You can set the filter attribute to a jQuery selector when calling the selectable() method. At this time, only elements that match the selector can become selection items

Copy code The code is as follows:

 

城市列表

 

   
• 重庆

   
• 北京

   
• 上海

   
• 广州

   
• 深圳

   
• 成都

   
• 天津

   
• 南京

   
• 杭州

   
• 武汉

   
• 西安

   
• 长沙

   
• 厦门

   
• 郑州

   
• 太原

   
• 青岛

 

 

Rendering:


3: Select event callback function
The selection event provides 6 events
selected, the event type is selectableseleted, it is triggered when an element is added to the selection and the selection operation is completed
selecting: The event type is selectableselecting, it is triggered when an element is selected during the selection process
start: The event type is selectablestart, which is triggered when the selection operation starts.
stop: The event type is selectablestop, which is triggered when the selection operation ends.
unselected: The event type is selectableunselected, when each element is removed from the selected item. , and is triggered after the selection operation is completed
unselecting: The event type is selectableunselecting, which is triggered when each element is removed from the selected item during the selection process

Copy code The code is as follows:

 

城市列表

 

   
• 重庆

   
• 北京

   
• 上海

   
• 广州

   
• 深圳

   
• 成都

   
• 天津

   
• 南京

   
• 杭州

   
• 武汉

   
• 西安

   
• 长沙

   
• 厦门

   
• 郑州

   
• 太原

   
• 青岛

 

 

效果和上例相同