This article mainly introduces you to the relevant information about using jQuery to achieve a simple drag effect. Recently, I found that the drag effect of a website is very good. I personally think it is a good user experience. I took the time to study it and it is necessary. Friends can refer to it. Let’s take a look at the detailed introduction with the editor.
Preface
This article mainly introduces you to a simple drag effect achieved by using jQuery, and shares it for your reference and study. I won’t say much below, let’s take a look at the detailed introduction. Bar.
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How to pull elements from one box to another box?
Implementation ideas
The events included in this operation are mousedown mousemove mouseup. Monitor these three events and perform corresponding operations.
The nodes of the operation design are: original node, temporary node, new node
The movement of the node involves the coordinates of event e
The operation elements are implemented using JQUERY
The corresponding comments have been reflected in the article, please read it carefully, you can understand it.
- First define an object drag, including the parameters needed for dragging
- Define the initialization init function to monitor various mouse events
- mousedown event: Clone a temporary node. Record the X, Y difference between the mouse click position and the node position, set the style of the clone copy and add this copy to the original container
- mousemove event: determine the relative displacement of the mouse and set the copy Absolute position style.
- mouseup Time: Remove temporary node. Traverse the three ULs. If it is not the original container, determine whether the mouse position is within the range of other containers. If so, add a new node under the container and delete the original node from the original container.
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nbsp;html> <meta> <title>拖拽</title> <style> .container ul{ width: 350px; padding: 15px; min-height:300px; background-color:#FFFFF0; margin:20px; display: inline-block; border-radius: 5px; border: 1px solid #bbb; } .container ul li{ display: block; float: left; width: 350px; height: 35px; line-height: 35px; border-radius: 4px; margin: 0; padding: 0; list-style: none; background-color:#EED2EE; margin-bottom:10px; -moz-user-select: none; user-select: none; text-indent: 10px; color: #555; } </style> <p> </p>
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on()方法有4个参数:1、第一个参数不可省略,规定要从被选元素添加的一个或多个事件或命名空间;2、第二个参数可省略,规定元素的事件处理程序;3、第三个参数可省略,规定传递到函数的额外数据;4、第四个参数可省略,规定当事件发生时运行的函数。

去掉方法:1、用“$(selector).removeAttr("readonly")”语句删除readonly属性;2、用“$(selector).attr("readonly",false)”将readonly属性的值设置为false。


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