{"id":168785,"date":"2024-05-08T16:31:39","date_gmt":"2024-05-08T08:31:39","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/168785.html"},"modified":"2024-05-08T16:31:49","modified_gmt":"2024-05-08T08:31:49","slug":"javascript-%e9%a1%b9%e7%9b%ae%e7%bb%84%e5%90%88%e6%a8%a1%e5%bc%8f%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/168785.html","title":{"rendered":"JavaScript \u9879\u76ee\u7ec4\u5408\u6a21\u5f0f\u5982\u4f55\u5b9e\u73b0"},"content":{"rendered":"

\"JavaScript<\/p>\n

\u7ec4\u5408\u6a21\u5f0f\u662f\u4e00\u79cd\u7ed3\u6784\u578b\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5b83\u5141\u8bb8\u5c06\u5bf9\u8c61\u7ec4\u6210\u6811\u5f62\u7ed3\u6784\u6765\u8868\u73b0\u6574\u4f53\u4e0e\u90e8\u5206\u7684\u5c42\u6b21\u5173\u7cfb\u3002\u5b83\u80fd\u4f7f\u7528\u6237\u4ee5\u4e00\u81f4\u7684\u65b9\u5f0f\u5904\u7406\u5355\u4e2a\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61\u3002\u5728JavaScript\u9879\u76ee\u4e2d\u5b9e\u73b0\u7ec4\u5408\u6a21\u5f0f\u4e3b\u8981\u662f\u4e3a\u4e86\u7ba1\u7406\u548c\u4f7f\u7528\u5206\u5c42\u6b21\u7684\u5bf9\u8c61\u3002\u5bf9\u8c61\u7ec4\u6210\u6811\u5f62\u7ed3\u6784\u3001\u7edf\u4e00\u5bf9\u8c61\u64cd\u4f5c\u63a5\u53e3\u3001\u7b80\u5316\u5ba2\u6237\u7aef\u4ea4\u4e91<\/strong> \u4e09\u4e2a\u65b9\u9762\u662f\u7ec4\u5408\u6a21\u5f0f\u7684\u6838\u5fc3\u3002<\/p>\n<\/p>\n

\u5bf9\u8c61\u7ec4\u6210\u6811\u5f62\u7ed3\u6784\u662f\u7ec4\u5408\u6a21\u5f0f\u7684\u6838\u5fc3\u7279\u6027\u4e4b\u4e00\u3002\u8fd9\u901a\u8fc7\u521b\u5efa\u4e00\u4e2a\u5171\u540c\u7684\u63a5\u53e3\u6765\u7ba1\u7406\u5355\u4e2a\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61\u5b9e\u73b0\u3002\u5728JavaScript\u4e2d\uff0c\u8fd9\u901a\u5e38\u901a\u8fc7\u521b\u5efa\u4e00\u4e2a\u57fa\u7c7b\u6216\u8005\u63a5\u53e3\uff0c\u65e2\u53ef\u4ee5\u4ee3\u8868\u5355\u4e2a\u5bf9\u8c61\uff0c\u4e5f\u53ef\u4ee5\u4ee3\u8868\u5bf9\u8c61\u7684\u7ec4\u5408\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u4e00\u4e2a\u7ec4\u5408\u5bf9\u8c61\u53ef\u4ee5\u5305\u542b\u5176\u5b83\u7ec4\u5408\u5bf9\u8c61\u6216\u8005\u53f6\u8282\u70b9\u5bf9\u8c61\uff0c\u4ece\u800c\u5f62\u6210\u6811\u5f62\u7ed3\u6784\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7ec4\u5408\u6a21\u5f0f\u7684\u57fa\u672c\u6982\u5ff5<\/h3>\n<\/p>\n

\u7ec4\u5408\u6a21\u5f0f\u662f\u8bbe\u8ba1\u6a21\u5f0f\u4e2d\u7684\u4e00\u79cd\uff0c\u5b83\u5141\u8bb8\u4f60\u5c06\u5bf9\u8c61\u7ec4\u5408\u6210\u6811\u5f62\u7ed3\u6784\u6765\u8868\u73b0\u6574\u4f53-\u90e8\u5206\u7684\u5c42\u6b21\u5173\u7cfb\u3002\u8fd9\u79cd\u65b9\u5f0f\u8ba9\u5ba2\u6237\u901a\u8fc7\u4e00\u4e2a\u7edf\u4e00\u7684\u63a5\u53e3\u64cd\u4f5c\u4e2a\u522b\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61\uff0c\u4f7f\u5f97\u5ba2\u6237\u5728\u4f7f\u7528\u7ec4\u5408\u7ed3\u6784\u548c\u5355\u4e2a\u5bf9\u8c61\u65f6\u53ef\u4ee5\u4fdd\u6301\u4e00\u81f4\u6027\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u5b9e\u73b0\u7ec4\u5408\u6a21\u5f0f\u7684\u6b65\u9aa4<\/h3>\n<\/p>\n

\u521b\u5efa\u7ec4\u4ef6\u63a5\u53e3<\/h4>\n<\/p>\n

\u9996\u5148\uff0c\u5b9a\u4e49\u4e00\u4e2a\u7ec4\u4ef6\u63a5\u53e3\u6765\u89c4\u8303\u5355\u4e2a\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61\u7684\u884c\u4e3a\u3002\u8fd9\u4e2a\u63a5\u53e3\u81f3\u5c11\u5e94\u8be5\u5305\u542b\u7528\u4e8e\u7ba1\u7406\u5b50\u7ec4\u4ef6\u7684\u64cd\u4f5c\uff0c\u5982\u6dfb\u52a0\uff08add\uff09\u3001\u5220\u9664\uff08remove\uff09\u7b49\uff0c\u8fd8\u53ef\u5305\u62ec\u4e1a\u52a1\u64cd\u4f5c\u7684\u65b9\u6cd5\uff0c\u5982display\u3002<\/p>\n<\/p>\n

class Component {<\/p>\n
    constructor(name) {<\/p>\n
        this.name = name;<\/p>\n
    }<\/p>\n
    add(component) {}<\/p>\n
    remove(component) {}<\/p>\n
    display(depth) {}<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5b9e\u73b0\u53f6\u8282\u70b9<\/h4>\n<\/p>\n
\u53f6\u8282\u70b9\u662f\u6ca1\u6709\u5b50\u8282\u70b9\u7684\u8282\u70b9\uff0c\u5b83\u4eec\u5b9e\u73b0\u4e86\u7ec4\u4ef6\u63a5\u53e3\uff0c\u4f46\u662f\u5728add\u548cremove\u65b9\u6cd5\u4e2d\u901a\u5e38\u4e0d\u505a\u4efb\u4f55\u5b9e\u73b0\uff0c\u56e0\u4e3a\u53f6\u8282\u70b9\u4e0b\u9762\u4e0d\u518d\u6709\u5176\u5b83\u8282\u70b9\u3002<\/p>\n<\/p>\n
class Leaf extends Component {<\/p>\n
    constructor(name) {<\/p>\n
        super(name);<\/p>\n
    }<\/p>\n
    display(depth) {<\/p>\n
        console.log('-'.repeat(depth) + this.name);<\/p>\n
    }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5b9e\u73b0\u590d\u5408\u7ec4\u4ef6<\/h4>\n<\/p>\n
\u590d\u5408\u7ec4\u4ef6\u53ef\u4ee5\u5305\u542b\u53f6\u8282\u70b9\u6216\u8005\u5176\u5b83\u590d\u5408\u7ec4\u4ef6\u3002\u590d\u5408\u7ec4\u4ef6\u5c06\u5bf9\u7ec4\u4ef6\u63a5\u53e3\u4e2d\u65b9\u6cd5\u7684\u5b9e\u73b0\u59d4\u6258\u7ed9\u5176\u5b50\u8282\u70b9\u3002<\/p>\n<\/p>\n
class Composite extends Component {<\/p>\n
    constructor(name) {<\/p>\n
        super(name);<\/p>\n
        this.children = [];<\/p>\n
    }<\/p>\n
    add(component) {<\/p>\n
        this.children.push(component);<\/p>\n
    }<\/p>\n
    remove(component) {<\/p>\n
        const index = this.children.indexOf(component);<\/p>\n
        if (index > -1) {<\/p>\n
            this.children.splice(index, 1);<\/p>\n
        }<\/p>\n
    }<\/p>\n
    display(depth) {<\/p>\n
        console.log('-'.repeat(depth) + this.name);<\/p>\n
        this.children.forEach(child => child.display(depth + 2));<\/p>\n
    }<\/p>\n
}<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u7ec4\u5408\u6a21\u5f0f\u7684\u4f18\u52bf\u4e0e\u9002\u7528\u573a\u666f<\/h3>\n<\/p>\n
\u7ec4\u5408\u6a21\u5f0f\u63d0\u4f9b\u4e86\u4e00\u79cd\u7075\u6d3b\u7684\u7ed3\u6784<\/strong>\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u7ef4\u62a4\u4e00\u4e2a\u5bf9\u8c61\u7684\u90e8\u5206-\u6574\u4f53\u5c42\u6b21\u7ed3\u6784\u3002\u8fd9\u4e2a\u6a21\u5f0f\u5f88\u9002\u5408\u90a3\u4e9b\u5e0c\u671b\u901a\u8fc7\u76f8\u540c\u7684\u65b9\u5f0f\u64cd\u4f5c\u5355\u4e2a\u5bf9\u8c61\u548c\u7ec4\u5408\u5bf9\u8c61\u7684\u573a\u666f\uff0c\u6bd4\u5982DOM\u5143\u7d20\u7684\u64cd\u4f5c\u3001\u6587\u4ef6\u7cfb\u7edf\u7684\u8bbe\u8ba1\u7b49\u3002<\/p>\n<\/p>\n
\u56db\u3001\u7ec4\u5408\u6a21\u5f0f\u5728JavaScript\u9879\u76ee\u4e2d\u7684\u5e94\u7528<\/h3>\n<\/p>\n
\u5728JavaScript\u4e2d\uff0cDOM\u6811\u5c31\u662f\u4e00\u4e2a\u5178\u578b\u7684\u7ec4\u5408\u6a21\u5f0f\u7684\u4f8b\u5b50\u3002DOM\u53ef\u4ee5\u5305\u542b\u5b50\u5143\u7d20\uff0c\u8fd9\u4e9b\u5b50\u5143\u7d20\u4e5f\u53ef\u4ee5\u5305\u542b\u81ea\u5df1\u7684\u5b50\u5143\u7d20\uff0c\u5f62\u6210\u4e00\u68f5\u6811\u3002\u901a\u8fc7\u7ec4\u5408\u6a21\u5f0f\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u901a\u8fc7\u7edf\u4e00\u7684\u63a5\u53e3\u65b9\u6cd5\u64cd\u4f5cDOM\u5143\u7d20\uff0c\u4e0d\u7528\u5173\u5fc3\u662f\u5355\u4e2a\u7684DOM\u5bf9\u8c61\u8fd8\u662f\u4e00\u4e2a\u5305\u542b\u4e86\u5f88\u591a\u5b50\u5143\u7d20\u7684\u590d\u6742\u5bf9\u8c61\u3002<\/p>\n<\/p>\n
\u603b\u7684\u6765\u8bf4\uff0c\u901a\u8fc7\u7ed3\u5408JavaScript\u7684\u7279\u6027\uff0c\u5b9e\u73b0\u7ec4\u5408\u6a21\u5f0f\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u5bf9\u8c61\u7684\u5c42\u6b21\u7ed3\u6784\uff0c\u63d0\u5347\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002\u5728\u5f00\u53d1\u4e2d\u8bc6\u522b\u51fa\u7b26\u5408\u7ec4\u5408\u6a21\u5f0f\u7279\u70b9\u7684\u573a\u666f\uff0c\u5e76\u6070\u5f53\u5730\u5e94\u7528\uff0c\u5c06\u4f1a\u4f7f\u9879\u76ee\u7684\u7ed3\u6784\u66f4\u52a0\u6e05\u6670\u3001\u903b\u8f91\u66f4\u52a0\u4e25\u8c28\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u4ec0\u4e48\u662fJavaScript\u9879\u76ee\u7ec4\u5408\u6a21\u5f0f\uff1f<\/strong>
JavaScript\u9879\u76ee\u7ec4\u5408\u6a21\u5f0f\u662f\u4e00\u79cd\u7528\u4e8e\u7ec4\u7ec7\u548c\u7ba1\u7406\u590d\u6742JavaScript\u9879\u76ee\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3002\u5b83\u5141\u8bb8\u5c06\u591a\u4e2a\u5c0f\u578b\u6a21\u5757\u7ec4\u5408\u6210\u66f4\u5927\u7684\u529f\u80fd\u6a21\u5757\uff0c\u540c\u65f6\u4fdd\u6301\u6a21\u5757\u4e4b\u95f4\u7684\u677e\u6563\u8026\u5408\uff0c\u4f7f\u5f97\u4ee3\u7801\u6613\u4e8e\u6269\u5c55\u548c\u7ef4\u62a4\u3002<\/p>\n
\u5982\u4f55\u5b9e\u73b0JavaScript\u9879\u76ee\u7ec4\u5408\u6a21\u5f0f\uff1f<\/strong>
\u8981\u5b9e\u73b0JavaScript\u9879\u76ee\u7ec4\u5408\u6a21\u5f0f\uff0c\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a  <\/p>\n
    \n
  1. \u5c06\u9879\u76ee\u62c6\u5206\u4e3a\u591a\u4e2a\u72ec\u7acb\u7684\u6a21\u5757\uff0c\u6bcf\u4e2a\u6a21\u5757\u8d1f\u8d23\u5b8c\u6210\u4e00\u4e2a\u7279\u5b9a\u7684\u529f\u80fd\u3002<\/li>\n
  2. \u4f7f\u7528\u9002\u5f53\u7684\u6a21\u5f0f\uff08\u5982\u53d1\u5e03-\u8ba2\u9605\u6a21\u5f0f\u6216\u89c2\u5bdf\u8005\u6a21\u5f0f\uff09\u6765\u5b9a\u4e49\u6a21\u5757\u4e4b\u95f4\u7684\u901a\u4fe1\u548c\u4ea4\u4e92\u65b9\u5f0f\u3002<\/li>\n
  3. \u521b\u5efa\u4e00\u4e2a\u4e3b\u8981\u7684\u7ec4\u5408\u6a21\u5757\uff0c\u8be5\u6a21\u5757\u5c06\u8d1f\u8d23\u7ec4\u5408\u548c\u7ba1\u7406\u5176\u4ed6\u6a21\u5757\u3002<\/li>\n
  4. \u5728\u4e3b\u8981\u7684\u7ec4\u5408\u6a21\u5757\u4e2d\uff0c\u5c06\u5404\u4e2a\u6a21\u5757\u7684\u65b9\u6cd5\u548c\u5c5e\u6027\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u4ee5\u63d0\u4f9b\u5b8c\u6574\u7684\u529f\u80fd\u3002<\/li>\n
  5. \u8003\u8651\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\u6216\u6a21\u5757\u5316\u5de5\u5177\uff08\u5982Webpack\u6216RequireJS\uff09\u6765\u786e\u4fdd\u6a21\u5757\u4e4b\u95f4\u7684\u547d\u540d\u51b2\u7a81\u95ee\u9898\u3002<\/li>\n
  6. \u5728\u5b9e\u73b0\u8fc7\u7a0b\u4e2d\uff0c\u9075\u5faa\u6700\u4f73\u5b9e\u8df5\uff0c\u5982\u5355\u4e00\u804c\u8d23\u539f\u5219\u548c\u5f00\u653e\u5c01\u95ed\u539f\u5219\uff0c\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002<\/li>\n<\/ol>\n
    \u6709\u54ea\u4e9b\u5e38\u89c1\u7684JavaScript\u9879\u76ee\u7ec4\u5408\u6a21\u5f0f\u5e94\u7528\u573a\u666f\uff1f<\/strong>
    JavaScript\u9879\u76ee\u7ec4\u5408\u6a21\u5f0f\u53ef\u7528\u4e8e\u5404\u79cd\u573a\u666f\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\uff1a  <\/p>\n
      \n
    1. \u5927\u578b\u524d\u7aef\u5e94\u7528\u7a0b\u5e8f\uff1a\u53ef\u4ee5\u4f7f\u7528\u7ec4\u5408\u6a21\u5f0f\u5c06\u89c6\u56fe\u5c42\u3001\u63a7\u5236\u5668\u548c\u6a21\u578b\u7ec4\u5408\u5728\u4e00\u8d77\uff0c\u4ee5\u5b9e\u73b0\u9ad8\u5ea6\u6a21\u5757\u5316\u548c\u5c42\u6b21\u5316\u7684\u67b6\u6784\u3002<\/li>\n
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