There is no built-in include function in JavaScript, but similar functionality can be achieved by using an external script tag. Take advantage of dynamically created \<script> elements. Adopt the modular nature of JavaScript. </script>
include usage in JavaScript
In JavaScript, there is no standard include
function. However, there are several ways to achieve similar functionality:
Method 1: Use an external script tag
<script src="path/to/external-script.js"></script>
Adding this tag to an HTML document will load the external JavaScript file and execute its contents.
Method 2: Using a dynamically created <script></script>
element
// 创建一个新的 <script> 元素 var script = document.createElement('script'); // 设置源属性 script.src = "path/to/external-script.js"; // 添加脚本到文档头 document.head.appendChild(script);
This will dynamically create and load the script at runtime.
Method 3: Use JavaScript modules
Modules were introduced in ES6, which is a mechanism for encapsulating and reusing code. Modules can import and export each other's content. To import a module, you can use the following syntax:
import {name} from "module-name";
Example:
// 定义一个模块 export function myFunction() { console.log("Hello world!"); }
// 导入模块 import {myFunction} from "./module-name"; // 调用模块中的函数 myFunction(); // 输出 "Hello world!"
These methods allow you to include external scripts and modules in JavaScript, enabling code reuse and modules change.
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