This time I will show you how to create a drag-and-drop effect in H5. What are the precautions for H5 to create a drag-and-drop effect? The following is a practical case, let’s take a look.
Drag related attributesThe draggable attribute is the<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 eventsondragstart: This event Triggered when the user starts dragging an element or selecting text ondrag: Triggered when the element is being dragged ondragend: Triggered when the user completes dragging and dropping an element ondragleave: Triggered when the object being dragged by the mouse leaves the scope of its container ondragover: Triggered when an object is dragged This event is triggered when the moving object is dragged within the scope of another object container. This event occurs on the target element. ondrop: During a drag process, this event is triggered when the mouse is released. This event acts on the target element. dataTransfer object related methodssetData(format,data): Add a custom data format getData(format): Get a custom data format clearData([format]): Clear the custom data format and dataEvent.preventDefault()This method is the default behavior to prevent events. PreventDefault() must be executed in ondragover, otherwise the ondrop event will not be triggered
<!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> <div class="main"> <div class="left">垃圾箱</div> <div 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> </div> <div style="clear: both;"></div> </div> <div id="message">拖到垃圾箱删除列表</div> </body> </html>Believe it After reading these cases, you have mastered the methods. For more exciting information, please pay attention to other related articles on the PHP Chinese website! Related reading:
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The above is the detailed content of How to create drag effect in H5. For more information, please follow other related articles on the PHP Chinese website!

H5 (HTML5) will improve web content and design through new elements and APIs. 1) H5 enhances semantic tagging and multimedia support. 2) It introduces Canvas and SVG, enriching web design. 3) H5 works by extending HTML functionality through new tags and APIs. 4) Basic usage includes creating graphics using it, and advanced usage involves WebStorageAPI. 5) Developers need to pay attention to browser compatibility and performance optimization.

H5 brings a number of new functions and capabilities, greatly improving the interactivity and development efficiency of web pages. 1. Semantic tags such as enhance SEO. 2. Multimedia support simplifies audio and video playback through and tags. 3. Canvas drawing provides dynamic graphics drawing tools. 4. Local storage simplifies data storage through localStorage and sessionStorage. 5. The geolocation API facilitates the development of location-based services.

HTML5 brings five key improvements: 1. Semantic tags improve code clarity and SEO effects; 2. Multimedia support simplifies video and audio embedding; 3. Form enhancement simplifies verification; 4. Offline and local storage improves user experience; 5. Canvas and graphics functions enhance the visualization of web pages.

The core features of HTML5 include semantic tags, multimedia support, offline storage and local storage, and form enhancement. 1. Semantic tags such as, etc. to improve code readability and SEO effect. 2. Simplify multimedia embedding with labels. 3. Offline storage and local storage such as ApplicationCache and LocalStorage support network-free operation and data storage. 4. Form enhancement introduces new input types and verification properties to simplify processing and verification.

H5 provides a variety of new features and functions, greatly enhancing the capabilities of front-end development. 1. Multimedia support: embed media through and elements, no plug-ins are required. 2. Canvas: Use elements to dynamically render 2D graphics and animations. 3. Local storage: implement persistent data storage through localStorage and sessionStorage to improve user experience.

H5 and HTML5 are different concepts: HTML5 is a version of HTML, containing new elements and APIs; H5 is a mobile application development framework based on HTML5. HTML5 parses and renders code through the browser, while H5 applications need to run containers and interact with native code through JavaScript.

Key elements of HTML5 include,,,,,, etc., which are used to build modern web pages. 1. Define the head content, 2. Used to navigate the link, 3. Represent the content of independent articles, 4. Organize the page content, 5. Display the sidebar content, 6. Define the footer, these elements enhance the structure and functionality of the web page.

There is no difference between HTML5 and H5, which is the abbreviation of HTML5. 1.HTML5 is the fifth version of HTML, which enhances the multimedia and interactive functions of web pages. 2.H5 is often used to refer to HTML5-based mobile web pages or applications, and is suitable for various mobile devices.


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