一、防止表格变形
在相应表格标签中加入
style="TABLE-LAYOUT: fixed; WORD-BREAK: break-all"
二、屏蔽html代码
在提交留言时把留言内容中的"" 替换成 < 和 >即可。
三、替换硬回车
即保留签写留言者写留言时的样式,这也需要用到替换
在ASP中替换chr(13)为
在PHP中替换" "为
注意:如果要结合屏蔽html代码,必须先替换第二点所说的再替换第三点
欢迎提供编写留言本中其它应该注意的问题!

本篇文章带大家了解一下HTML(超文本标记语言),介绍一下HTML的本质,HTML文档的结构、HTML文档的基本标签和图像标签、列表、表格标签、媒体元素、表单,希望对大家有所帮助!

总结了一些web前端面试(笔试)题分享给大家,本篇文章就先给大家分享HTML部分的笔试题(附答案),大家可以自己做做,看看能答对几个!

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。

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。

在html中,document是文档对象的意思,代表浏览器窗口的文档;document对象是window对象的子对象,所以可通过“window.document”属性对其进行访问,每个载入浏览器的HTML文档都会成为Document对象。

html5支持boolean值属性;boolean值属性指是属性值为true或者false的属性,如input元素中的disabled属性,不使用该属性表示值为flase,不禁用元素,使用该属性可以不设置属性值表示值为true,禁用元素。

在html中,焦点是光标的意思,元素通过鼠标点击就可以获得光标,也即获得焦点;可以利用autofocus属性来规定当页面加载时元素会自动获得焦点,该属性是一个布尔属性,若指定元素设置该属性则会获得焦点,语法为“<指定元素 autofocus="autofocus">”。


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