问题描述
SelectNodes和GetElementsByTagName之间的主要区别是什么?
what are main differences between SelectNodes and GetElementsByTagName.
推荐答案
是一个.NET / MSXML特定的方法,可以获取一个表达式。 XPath可以通过标签名称选择元素,但也可以执行许多其他更复杂的选择规则。
SelectNodes is a .NET/MSXML-specific method that gets a list of matching nodes for an XPath expression. XPaths can select elements by tag name but can also do lots of other, more complicated selection rules.
是一种DOM级别1的核心标准方法,可用于许多语言(但拼写为首都 G
。净)。它只通过标签名称选择元素;您不能要求它选择具有某个属性的元素,或者标记名为 a
的元素包含标签名称 b
或任何聪明的东西。它更老,更简单,在某些环境中更快。
getElementByTagName is a DOM Level 1 Core standard method available in many languages (but spelled with a capital G
in .NET). It selects elements only by tag name; you can't ask it to select elements with a certain attribute, or elements with tag name a
inside other elements with tag name b
or anything clever like that. It's older, simpler, and in some environments faster.
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