JavaScript模块导出导入_javascript代码组织

// mathUtils.js
export function add(a, b) {
  return a + b;
}
<p>export const PI = 3.14159;</p>
                    <div class="aritcle_card">
                        <a class="aritcle_card_img" href="/ai/1929">
                            <img src="https://img.php.cn/upload/ai_manual/001/246/273/68b6d522da165474.png" alt="TextCortex">
                        </a>
                        <div class="aritcle_card_info">
                            <a href="/ai/1929">TextCortex</a>
                            <p>AI写作能手，在几秒钟内创建内容。</p>
                            <div class="">
                                <img src="/static/images/card_xiazai.png" alt="TextCortex">
                                <span>62</span>
                            </div>
                        </div>
                        <a href="/ai/1929" class="aritcle_card_btn">
                            <span>查看详情</span>
                            <img src="/static/images/cardxiayige-3.png" alt="TextCortex">
                        </a>
                    </div>
                <p>// 也可以集中导出
const subtract = (a, b) => a - b;
export { subtract };</p>

// calculator.js
export default function(a, b) {
  return a * b;
}

// main.js
import { add, PI } from './mathUtils.js';
console.log(add(2, 3)); // 5
console.log(PI);        // 3.14159

// main.js
import multiply from './calculator.js';
console.log(multiply(4, 5)); // 20

import multiply, { add, PI } from './utils.js';

import * as MathLib from './mathUtils.js';
console.log(MathLib.add(2, 3));
console.log(MathLib.PI);

<script type="module" src="main.js"></script>