未捕获的TypeError：链接不是HTMLButtonElement.onclick中的函数 [英] Uncaught TypeError: links is not a function at HTMLButtonElement.onclick

问题描述

这是一个非常奇怪的错误。 HTML认为函数未定义，我该如何解决？以下是代码：

This is a very strange error. HTML thinks the function is undefined, how do I solve this? Here's the code:

<button id="links" onclick="links()">Links</button>
    <script>function links(){document.location = ("links.html")}</script>

推荐答案

问题是 document.links
已经存在，对全局文档上的项的隐式引用优先于全局窗口上的隐式引用。也就是说，如果文档。< something> 存在且窗口。< something> 存在，如果您只是使用< something> 本身，解释程序将首先检查您使用的名称是否存在于文档在检查您使用的名称是否存在于窗口之前。 （您的链接 功能存在于 window.links ）

The problem is that document.links already exists, and implicit references to items on the global document willl take precedence over implicit references on the global window. That is, if document.<something> exists and window.<something> exists, if you just use <something> by itself, the interpreter will first check to see if the name you're using exists on document before checking to see if the name you're using exists in window. (Your links function exists at window.links)

Document接口的链接只读属性返回文档中所有元素和元素的集合href属性的值。

The links read-only property of the Document interface returns a collection of all elements and elements in a document with a value for the href attribute.

<button id="links" onclick="console.log(links === document.links); links();">text content</button>
<script>
function links() {
  document.location = ("links.html")
}
</script>

请参考 window.links 而不是链接，默认为 document.links ：

Either refer to window.links instead of just links, which will default to document.links:

<button id="links" onclick="window.links();">text content</button>
<script>
function links() {
  document.location = ("links.html")
}
</script>

或者，最好使用Javascript正确附加处理程序;内联处理程序需要污染全局范围，并且通常被认为是非常糟糕的做法：

Or, preferably, attach the handler properly using Javascript instead; inline handlers require pollution of the global scope and are generally considered to be pretty bad practice anyway:

document.querySelector('#links').addEventListener('click', () => {
  document.location = "links.html";
});

<button id="links">text content</button>

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