sizcache和sizset在jQuery中有什么作用 [英] What purpose do sizcache and sizset serve in jQuery
问题描述
我正在使用jQuery，并在使用Dev Toolbar检查IE页面的DOM时，发现许多元素都有 sizset 和 sizcache添加到元素的属性。我在Chrome或Firefox中看不到这些内容？另外，我看到页面上的许多元素都共享相同的值，这些字段让我相信这是一个全球价值，但有几个元素具有不同的值？
I am using jQuery, and in inspecting the DOM of my page in IE with the Dev Toolbar I see that many elements have sizset and sizcache attributes added to the element. I don't see these in Chrome or Firefox? Also, I see that many elements on the page share the same value for these fields leading me to believe it was a global value, but a few do have different values?
<html xmlns="http://www.w3.org/1999/xhtml" sizcache="66" sizset="0">
<head>...</head>
<body sizcache="66" sizset="0">
<div class="ui-datepicker-group ui-datepicker-group-first" sizcache="18" sizset="0">
</body>
</html>
有谁知道为什么IE只显示这些内容，以及它们的用途是什么？
Does anyone know why IE only shows these, and what purpose they serve?
推荐答案
仅供内部使用。
jQuery核心文件使用它来
计算nth-child。这里是
源代码（我的重点）：
it's meant for internal use only. The jQuery core file uses it to
calculate nth-child. Here is the source (with my emphasis):
它看起来像 nodeIndex 和 sizcache 和 sizset 全部用于内部计算第n个子元素。
It looks like nodeIndex and sizcache and sizset are all used internally to calculate the nth-child.
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