当使用文本节点时，我应该使用“data”，“nodeValue”，“textContent”或“整个文本”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文本节点的文本？
在我处理DOM变化观察者的实验中，我注意到当 target 是一个文本节点时，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.
-
data -
nodeValue -
textContent -
wholeText
datanodeValuetextContentwholeText
这些字段我应该使用？
有些只是为了与其他浏览器或旧的DOM标准兼容吗？它是否会影响我是否正在阅读VS修改文本？
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
在所有这些中，我会选择数据：为实施 CharacterData 界面（ 文字 和 注释 ）。尝试为其他人访问此属性会使 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 对于文本节点基本上与 data 相同，但实际上是为属性和注释节点。我通常希望我的程序提前失败。 ）
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，因为它表示节点及其后代的文本内容。这与整个文本一起，可能应该更多地用于从更复杂的结构收集文本
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.
所有这一切， textContent 和 wholeText 在DOM Level 3中定义（=更现代）。
Said all that, textContent and wholeText were defined in DOM Level 3 (= more modern).
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