blogspot代码框、代码高亮

参考1：https://github.com/google/code-prettify/blob/master/docs/getting_started.md
参考2：https://github.com/google/code-prettify

//编辑网页模板-html，插入以下代码

<script src="https://cdn.rawgit.com/google/code-prettify/master/loader/run_prettify.js?autoload=true&amp;skin=sunburst&amp;lang=css" defer="defer"></script>

//如何启用
<pre class="prettyprint linenums">
code
code
</pre>

//显示每一行的行号
<style>
li.L0, li.L1, li.L2, li.L3,
li.L5, li.L6, li.L7, li.L8
{ list-style-type: decimal !important }
</style>

(function(){
var scripttags = document.getElementsByTagName('script')
, i, l
, s, d
for (i = 0, l = scripttags.length; i !== l; i++){
    if (scripttags[i].type === 'text/x-markdown') {
        s = scripttags[i]
        d = document.createElement('div')
        d.innerHTML = (new Markdown.Converter()).makeHtml(s.innerHTML)
        s.parentNode.insertBefore(d, s)
    }
}
})()