javascript Javascript按名称获取子元素
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Javascript Get Child Element by Name
提问by Fluidbyte
I'm passing a var elinto a function. elcontains previously grabbed element (using getElementById) and when I console.log elin the function I get the following:
我正在将一个 var 传递给el一个函数。el包含以前抓取的元素(使用 getElementById),当我el在函数中使用 console.log时,我得到以下信息:


The problem comes in when I try to grab an element inside of the elusing:
当我尝试在elusing 中抓取一个元素时,问题就出现了:
el.getElementsByName('fname');
I get the error:
我收到错误:
Uncaught TypeError: Object #<HTMLDivElement> has no method 'getElementsByName'
回答by Pointy
The getElementsByName()API is at the documentobject level. It's not an HTMLElement method.
该getElementsByName()API是在document对象层级。它不是 HTMLElement 方法。
You could use querySelectorAll()instead:
你可以querySelectorAll()改用:
var fnames = el.querySelectorAll('[name=fname]');
It's not supported in older browsers however.
但是,旧浏览器不支持它。

