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有区别么？作为一个渣渣前端，现在最讨厌的竟然是被人嘴里的HTML5（或者是H5）。相信不少人和我有同感。=================================================
正式回答楼主，去学HTML，不要分4或者5 你有从windows 95开始学用你的电脑么？ 严格意义上来讲，h5只是在h4的基础上添加了几个新标签（nav,article,canvas之类）而已，所以其实没啥区别，html那几个标签也就1小时的学习量。
而我们经常说的h5事实上指得不是单纯的HTML5，而是指新规范带来的一系列新API，包括css3和es6。
所以这个问题显得很外行，因为并不存在所谓的跳4学5，这也是上面那么多人喷的原因。就好比请吃饭已经不是指单纯的吃饭，而是一种带有一定目的性的酒桌文化，所以你纠结到底吃山珍还是海味就会显得很尴尬，如果你想单纯的吃饭自己做不就好了。同理，如果你指的是单纯的html，那几个标签有什么好纠结的。
好，我赞同你的观点
所以日后开发的时候什么div ul ol li span之类的你千万别用，因为那是4的内容
FYI:
不懂楼上诸位为何戾气这么重，毕竟html5刚出来的时候还是要小心翼翼的考虑某些标签和属性是不是全浏览器支持的，也没过去多少年不过题主，虽然现在有些系统很老很老只支持h4甚至更老的版本，但是它们往往不在使用h5的前端工程师的用户范围；主流浏览器对h5支持都已经很好了；而马上会被Edge取代的IE，是几乎必然要做单独的浏览器适配而且需要你专门了解的。
所以直接上H5吧。毕竟讲的详细的H5都会包含h4的内容的 说句不好听的，问这种问题就好像是在说既然有6年级，我可不可以只念六年级而不念一年级一样不动脑子。
HTML5也是基于4上的，你学HTML5不可能不学4，相反，你学会了HTML4，HTML5也只是个进阶的过程。 直接学html5吧, 毕竟题主是刚学吧, 4和5虽然有区别, 但是在你学习过程中应该很少碰到, 而且估计你学完html6都出来了吧. 其实学习所有语言也是, 不要太纠结应该学习什么版本, 就算版本怎么变, basic ideas是不会变的 不用想那么多，直接W3CSchool撸起就好了～
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