什么是this.parentElement？ [英] What is this.parentElement?

问题描述

pg.myfunc = function(){
    var i = 1, j = 2;
    this.selected = 1;
    xx.newObject = this.parentElement;

...

什么是 xx。 newObject = this.parentElement; 在做什么？

推荐答案

与相同this.parentNode ：它为您提供包含此的节点作为childNode。 此将是 pg ，可能是某种元素; this.parentNode 将包含它，或者文档对象，如果 pg 是根元素。

It's the same as this.parentNode: it gives you the node that contains this as a childNode. this will be pg, presumably an Element of some kind; this.parentNode will be the Element that contains it, or the document object if pg is the root element.

parentElement 是非标准 IE扩展。由于IE还支持标准属性 parentNode ，因此永远不应使用 parentElement 。

parentElement is a non-standard IE extension. Since IE also supports the standard property parentNode, parentElement should never be used.

或者，也许它只是一个具有名为 parentElement 属性的任意对象，在这种情况下它可以是任何东西。从该代码中找不到真正的方法，但在Element节点上设置 myfunc 等任意属性是不常见的。

Alternatively, maybe it's just an arbitrary object with a property called parentElement, in which case it could be anything at all. There's no real way to tell from that code, but it would be unusual to be setting arbitrary properties like myfunc on an Element node.

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