jQuery.不是吗? [英] jQuery .nothas?

问题描述

是否有一种方法可以等效于jQuery中的.nothas()选择器?例如，如果我想向所有尚没有元素的TABLE元素添加TBODY，那么做这样的事情会很好:

Is there a way to do the equivalent of a .nothas() selector in jQuery? For example, if I wanted to add a TBODY to all TABLE elements that didn't already have one, it would be nice to do something like this:

$("TABLE").nothas("TBODY").append("<TBODY />");

如果将其限制为直接后代，那就更好了，这样(在这种情况下)将不会考虑嵌入在THEAD单元格中的TABLE元素.

It would be even better if this could be limited to direct descendents, so that (in this case) TABLE elements embedded in THEAD cells wouldn't be considered.

推荐答案

jQuery具有 :not 和 :has 选择器:

jQuery has :not and :has selectors:

$("table:not(:has(tbody))").append("<tbody />");

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