sizcache 和 sizset 在 jQuery 中的作用是什么
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What purpose do sizcache and sizset serve in jQuery
提问by jaywon
I am using jQuery, and in inspecting the DOM of my page in IE with the Dev Toolbar I see that many elements have sizsetand sizcacheattributes 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?
我使用jQuery，并与开发工具栏检查我的页面的DOM在IE中我看到，很多元素都sizset和sizcache属性添加到元素。我在 Chrome 或 Firefox 中看不到这些？此外，我看到页面上的许多元素对这些字段共享相同的值，这让我相信这是一个全局值，但有几个元素确实具有不同的值？
<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>
Does anyone know why IE only shows these, and what purpose they serve?
有谁知道为什么 IE 只显示这些，以及它们的用途是什么？
回答by meder omuraliev
it's meant for internal use only. The jQuery core file uses it to
calculate nth-child. Here is the source (with my emphasis):
它仅供内部使用。jQuery 核心文件使用它来
计算 nth-child。这是来源（我的重点）：
It looks like nodeIndexand sizcacheand sizsetare all used internally to calculate the nth-child.
看起来nodeIndex和sizcache和sizset都在内部用于计算第 n 个孩子。
