javascript语言和html语言是一种怎么样的从在 两个有什么统一的标准或者 区别吗
推荐回答(2个)
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HTML 全称“超文本标记语言”。事实上它就是一个排版语言。例如你输入“百度”,保存成文本文件,那么它只能被以文字方式显示,不能进行任何排版或者着色。例如你不能把“百度”这两个字靠右对齐,也不能显示为红色,当然也不可能加一个下划线、设置字体之类的。如果要实现这种效果,你几种方式,例如可以使用 word、金山Office、Adobe PDF之类的排版软件,也可以使用 HTML。排版软件只能编辑或查看自身定义的格式的文档,比如 word 只能打开自己的 doc 格式的文档,而 PDF 格式的文档必须用 Adobe Reader 打开。而 HTML 则是由万维网标准组织 w3c 定义的,各种不同的浏览器,例如微软的 IE,网景的 Netscape,以及现在流行的 firefox 火狐浏览器,都能够识别并显示,而且显示效果差别不大。因此,在万维网(World Wide Web,即www)上,如果你要向别人展示一个内容丰富的页面,只需使用 HTML 就可以了。
2. JavaScript(简称JS)则是一种脚本语言,属于一种程序语言。它可以嵌入在 HTML 页面中。支持 JS 语言的浏览器可以解析并执行这个脚本,以达到使 HTML 页面具有与用户交互的功能。例如在点击“next page”的时候弹出一个“确定跳转吗”的提示。或者在用户输入一个密码的时候,在客户端校验密码长度,如果够长则允许提交,不够长则禁止提交,并弹出“密码长度不够”这样的提示。
假设HTML为一个人,CSS则是衣服;js就是人的动作;js和css一般配合HTML文档使用;不同的语言结构不能适用;通常用法是通过鼠标、键盘等事件去触发js中的function函数,以达到目的:http://edu.51cto.com/course/course_id-3127.html
HMTL是网页显示的主语言, javascript 是辅助语言或者只是脚本,起到增强效果的语言
比如我们常说的: HTML + CCS + Javascript 后面两个都是围绕前一个来的
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