Javascript 获取 getElementsByName 返回的对象的标签名
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get the tag name of object returned by getElementsByName
提问by kamikaze_pilot
so suppose I call document.getElementsByName("title");in javascript
所以假设我调用document.getElementsByName("title");javascript
and I want to know the type of the tag of the element that is returned by that function, for instance, to see if it's a meta tag or a div tag or a span tag, etc
我想知道该函数返回的元素标签的类型，例如，看看它是元标签还是 div 标签或 span 标签等
how would I go about doing this?
我该怎么做呢？
回答by venimus
document.getElementsByName("title");returns a set of elements not a single element
so within a cycle you could use element.tagNameto get the tag
document.getElementsByName("title");返回一组元素而不是单个元素，因此在一个循环内您可以element.tagName用来获取标签
basicly
基本上
document.getElementsByName("title")[0].tagNameshould work
document.getElementsByName("title")[0].tagName应该管用
回答by James Westgate
You have returned a NodeListobject, so you would need to be more specific with your selector, or choose the first element using an index of 0, as in the other answers.
您已经返回了一个NodeList对象，因此您需要更具体地使用选择器，或者像其他答案一样使用索引 0 选择第一个元素。
Whilst you can use nodeNameor tagName, nodeNameis the better option.
虽然您可以使用nodeName或tagName，但这nodeName是更好的选择。
回答by James Allardice
You can use the tagNameproperty like so:
您可以tagName像这样使用该属性：
document.getElementsByName('name')[index].tagName;
document.getElementsByName('name')[index].tagName;
You need the index as the getElementsByNamefunction returns an array.
您需要索引，因为该getElementsByName函数返回一个数组。
