选择符

The HTML string is different from the traditional selectors in that it creates the DOM elements representing that HTML string, on the fly, to be (assumedly) inserted into the document later.

这个HTML字符串同于用来示那些HTML字符串、并据以查询相应DOM元素的选择符，一般而言，随后都会把这个HTML码串插入到文档中去。