The following editor will bring you a simple example of HTML5 drag and drop. The editor thinks it is quite good, so I will share it with you now and give it as a reference for everyone. Let’s follow the editor to take a look.
Drag-related attributes
The draggable attribute is the global attribute of html5. It is one of the ways that HTML5 supports drag and drop operations. It is used to indicate whether the element can be dragged and dropped. Draggable has three values. true means that it can be dragged and dropped, false means that it cannot be dragged and dropped, and auto means that the browser's default value is used
<ul>
<li id="item1" draggable="true">列表1</li>
<li id="item2" draggable="true">列表2</li>
<li id="item3" draggable="true">列表3</li>
<li id="item4" draggable="true">列表4</li>
<li id="item5" draggable="true">列表5</li>
<li id="item6" draggable="true">列表6</li>
</ul>Drag-related Events
ondragstart: This event triggers ondrag when the user starts dragging an element or selecting text : Triggered when the element is being dragged ondragend: Triggered when the user completes the drag and drop of the element ondragleave: Triggered when the object dragged by the mouse leaves its container scope ondragover: When a dragged object is in another This event is triggered when dragging within the scope of the object container. This event occurs on the target element. ondrop: During a dragging process, this event is triggered when the mouse is released. This event acts on the target element.
dataTransfer object related methods
setData(format,data): Add a custom data format getData(format): Get a custom data format clearData([format]): Clear the customization Data format and data
Event.preventDefault()
This method is the default behavior to prevent events. PreventDefault() must be executed in ondragover, otherwise ondrop events Will not be triggered
Implementation case:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
.main{
width: 800px;
/*border: 1px solid #ccc;*/
height: 400px;
margin:0 auto;
}
.left{
float: left;
width: 25%;
background-color: #666;
height: 370px;
text-align: center;
color: black;
padding-top:30px ;
font-size: 110px;
}
.right{
float: right;
width: 69%;
}
.right ul,.right li{
margin: 0;
padding: 0;
}
.right li{
list-style: none;
border: 2px dashed #666;
background-color: #ddd;
height: 60px;
margin-top: 3px;
text-indent: 30px;
line-height: 60px;
}
.right li:hover{
background-color: #ccc;
}
#message{
width: 800px;
text-align: center;
border: 1px solid black;
margin: 20px auto;
font-size:28px;
}
</style>
<script type="text/javascript">
window.onload = function(){
var aLi = document.getElementsByTagName('li');
var oLeft = document.getElementsByClassName('left')[0];
var oMessage = document.getElementById('message');
for(var i=0;i<aLi.length;i++){
aLi[i].index = i+1;
aLi[i].ondragstart = function(ev){
//事件对象ev
var evev = ev || event;
ev.dataTransfer.setData("Text",this.id);
}
}
oLeft.ondrop = function(ev){
var evev = ev || event;
var data = ev.dataTransfer.getData("Text");
var num = document.getElementById(data).index;
document.getElementById(data).remove();
oMessage.innerHTML = "列表"+num+"被放进了垃圾箱";
this.style.color = "black";
}
oLeft.ondragover = function(ev){
var evev = ev || event;
ev.preventDefault();
}
oLeft.ondragenter = function(){
this.style.color = "#fff";
}
}
</script>
</head>
<body>
<p class="main">
<p class="left">垃圾箱</p>
<p class="right">
<ul>
<li id="item1" draggable="true">列表1</li>
<li id="item2" draggable="true">列表2</li>
<li id="item3" draggable="true">列表3</li>
<li id="item4" draggable="true">列表4</li>
<li id="item5" draggable="true">列表5</li>
<li id="item6" draggable="true">列表6</li>
</ul>
</p>
<p style="clear: both;"></p>
</p>
<p id="message">拖到垃圾箱删除列表</p>
</body>
</html>The above is the detailed content of Sample code to implement HTML5 drag and drop. For more information, please follow other related articles on the PHP Chinese website!
html5的div一行可以放两个吗Apr 25, 2022 pm 05:32 PMhtml5的div元素默认一行不可以放两个。div是一个块级元素，一个元素会独占一行，两个div默认无法在同一行显示；但可以通过给div元素添加“display：inline;”样式，将其转为行内元素，就可以实现多个div在同一行显示了。
html5中列表和表格的区别是什么Apr 28, 2022 pm 01:58 PMhtml5中列表和表格的区别：1、表格主要是用于显示数据的，而列表主要是用于给数据进行布局；2、表格是使用table标签配合tr、td、th等标签进行定义的，列表是利用li标签配合ol、ul等标签进行定义的。
html5怎么让头和尾固定不动Apr 25, 2022 pm 02:30 PM固定方法：1、使用header标签定义文档头部内容，并添加“position:fixed;top:0;”样式让其固定不动；2、使用footer标签定义尾部内容，并添加“position: fixed;bottom: 0;”样式让其固定不动。
HTML5中画布标签是什么May 18, 2022 pm 04:55 PMHTML5中画布标签是“<canvas>”。canvas标签用于图形的绘制，它只是一个矩形的图形容器，绘制图形必须通过脚本（通常是JavaScript）来完成；开发者可利用多种js方法来在canvas中绘制路径、盒、圆、字符以及添加图像等。
html5中不支持的标签有哪些Mar 17, 2022 pm 05:43 PMhtml5中不支持的标签有：1、acronym，用于定义首字母缩写，可用abbr替代；2、basefont，可利用css样式替代；3、applet，可用object替代；4、dir，定义目录列表，可用ul替代；5、big，定义大号文本等等。
html5废弃了哪个列表标签Jun 01, 2022 pm 06:32 PMhtml5废弃了dir列表标签。dir标签被用来定义目录列表，一般和li标签配合使用，在dir标签对中通过li标签来设置列表项，语法“<dir><li>列表项值</li>...</dir>”。HTML5已经不支持dir，可使用ul标签取代。
Html5怎么取消td边框May 18, 2022 pm 06:57 PM3种取消方法：1、给td元素添加“border:none”无边框样式即可，语法“td{border:none}”。2、给td元素添加“border:0”样式，语法“td{border:0;}”，将td边框的宽度设置为0即可。3、给td元素添加“border:transparent”样式，语法“td{border:transparent;}”，将td边框的颜色设置为透明即可。
html5是什么意思Apr 26, 2021 pm 03:02 PMhtml5是指超文本标记语言（HTML）的第五次重大修改，即第5代HTML。HTML5是Web中核心语言HTML的规范，用户使用任何手段进行网页浏览时看到的内容原本都是HTML格式的，在浏览器中通过一些技术处理将其转换成为了可识别的信息。HTML5由不同的技术构成，其在互联网中得到了非常广泛的应用，提供更多增强网络应用的标准机。
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
SublimeText3 Chinese version
Chinese version, very easy to use
Dreamweaver Mac version
Visual web development tools
WebStorm Mac version
Useful JavaScript development tools
Notepad++7.3.1
Easy-to-use and free code editor
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
