匹配标签

A well-known tag balancing: searches for tag or tag's content bounds from current caret position and selects it. It will expand (outward balancing) or shrink (inward balancing) selection when called multiple times. Not every editor supports both inward and outward balancing due of some implementation issues, most editors have outward balancing only.

从插入符所在位置开始查找标签及标签内容，并选中它。当多次调用时将向外扩展或向内收缩选择。由于实现上的问题，不是所有的编辑器同时支持这两种操作，多数编辑器只支持向外扩展选择。

Emmet’s tag balancing is quite unique. Unlike other implementation, this one will search tag bounds from caret’s position, not the start of the document. It means you can use tag balancer even in non-HTML documents.

Emmet 的匹配标签功能很独特。不像其它实现，Emmet 从插入符所在位置而不是从文档的开头开始搜索标签，这意味着可以在非 HTML 文档使用这个功能。

Note that tag matching may not work outside HTML if tag definition is assembled by concatenating strings, like this: var cell = '<td class="' + (data.odd ? 'odd' : 'even') + '">';

注意如果标签是由拼接的字符定义，像这样：var cell = '<td class="' + (data.odd ? 'odd' : 'even') + '">'，不能匹配标签。