如何解决文档未定义错误？

Question

I am getting this error I thought I would be because of the node.js but I am not sure of it.我收到这个错误，我以为我会是因为 node.js，但我不确定。 How can I solve it ?我该如何解决？

[Running] node "c:\Users\Lenovo\Desktop\projectjs\index.js"
c:\Users\Lenovo\Desktop\projectjs\index.js:1
var counter = document.getElementById("count-el")
              ^

ReferenceError: document is not defined
    at Object.<anonymous> (c:\Users\Lenovo\Desktop\projectjs\index.js:1:15)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:76:12)
    at internal/main/run_main_module.js:17:47

 var counter = document.getElementById("count-el") var count = 0 function increment() { count = count + 1 counter.innerText = count }

 <body> <div> <h1>People entered:</h1> <h2 id="count-el">0</h2> <button id="increment-btn" onclick="increment">INCREMENT</button> </div> <script src="index.js"></script> </body>

Answer 1

Your JavaScript is designed to be embedded in an HTML document, loaded by a <script> element and executed by a web browser.您的 JavaScript 旨在嵌入 HTML 文档中，由<script>元素加载并由 Web 浏览器执行。

It is not designed to run in Node.js which isn't centred around documents at all.它不是为在根本不以文档为中心的 Node.js 中运行而设计的。

Open the HTML document in a web browser.在 Web 浏览器中打开 HTML 文档。 It already has a <script> element.它已经有一个<script>元素。

如何解决文档未定义错误？

问题描述

1 个解决方案

解决方案1
0 已采纳 2021-07-04 15:44:28

如何解决文档未定义错误？

问题描述

1 个解决方案

解决方案1 0 已采纳 2021-07-04 15:44:28

解决方案1
0 已采纳 2021-07-04 15:44:28