ie8 does not support html5. If you want ie8 to support html5, there are two ways: 1. Reference Google's html5.js file and put the code in the head tag interval; 2. By adding "while (i --){document.createElement(e[i])}" code implementation supports HTML5 elements.
#The operating environment of this tutorial: Windows 10 system, HTML5 version, Dell G3 computer.
Does ie8 support html5?
No.
But to make IE (ie6/ie7/ie8) support HTML5 elements, we can add the following JavaScript to the HTML header. This is a simple document.createElement statement, using conditional comments to call this js file for IE. . Opera, FireFox and other non-IE browsers will ignore this code and there will be no http request.
Method 1: Quote Google’s html5.js file. You can download the code content and read it yourself.
<!–[if lt IE9]> <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]–>
Put the above code into the head tag interval
Method 2: Do it by coding JS yourself.
<script> (function() { if (! /*@cc_on!@*/ 0) return; var e = "abbr, article, aside, audio, canvas, datalist, details, dialog, eventsource, figure, footer, header, hgroup, mark, menu, meter, nav, output, progress, section, time, video".split(', '); var i= e.length; while (i--){ document.createElement(e[i]) } })() </script>
No matter which of the above methods you use, please remember to define the following in CSS to make these tags become block elements, just like divs.
/*html5*/ article,aside,dialog,footer,header,section,footer,nav,figure,menu{display:block}
Recommended learning: "HTML5 Video Tutorial"
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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“<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。

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html5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。

3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。


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