当使用文本节点时，我应该使用“数据”，“nodeValue”，“textContent”或“全文”领域？ [英] When working with text nodes should I use the "data", "nodeValue", "textContent" or "wholeText" field?
问题描述
可能重复：
如何检索DOM Text节点的文本？
在我处理DOM突变观察者的实验中，我注意到当目标是一个文本节点时，有四个字段都包含节点的新文本。
In my experiments to handle DOM mutation observers I've noticed that when the target is a text node there are four fields all containing the new text of the node.
-
数据 -
nodeValue -
textContent -
wholeText
datanodeValuetextContentwholeText
有没有一个最佳实践我应该使用这些字段？
Is there a "best practice" for which of these fields I should use?
有些只是为了与其他浏览器或旧的DOM标准兼容吗？无论我正在阅读还是修改文字，都有所不同吗？如果一个人最好是他人的目的是什么？
Are some just for compatibility with other browsers or older DOM standards? Does it make a difference whether I'm reading vs modifying the text? If one is best what is the purpose of the others?
推荐答案
所有这些我会选择数据：它是为执行的节点定义的 CharacterData 界面（ 文本 和 评论 ）。试图访问这个属性为其他人赋予 undefined 。
Of all these I'd choose data: it is defined for the nodes implementing CharacterData interface (Text and Comment ones) only. Trying to access this property for the others gives undefined.
nodeValue 基本上与数据相同，但实际上是为属性和注释节点。我通常希望我的程序能够早日失败。 ）
nodeValue is essentially the same as data for text nodes, but is actually defined for attribute and comment nodes as well. And I usually want my programs to fail early. )
textContent 是对我来说，完全不同的东西，因为它代表节点及其后代的文本内容。这与整个文本一起使用，也许应该更多地用于从更复杂的结构中收集文本比起单个文本节点。
textContent is, for me, something completely different, as it represents the text content of a node and its descendants. This, along with wholeText, perhaps should be used more to collect texts from more complex structures than a single text node.
表示所有这些， textContent 和 wholeText 在DOM Level 3（=更现代）中定义。
Said all that, textContent and wholeText were defined in DOM Level 3 (= more modern).
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