{"id":6782,"date":"2025-01-11T12:35:27","date_gmt":"2025-01-11T12:35:27","guid":{"rendered":"https:\/\/howtogeek.blog\/zh\/?p=6782"},"modified":"2025-01-11T12:35:27","modified_gmt":"2025-01-11T12:35:27","slug":"create-your-first-web-application-a-beginners-guide-to-building-a-simple-notes-app-and-word-counter","status":"publish","type":"post","link":"https:\/\/howtogeek.blog\/zh\/create-your-first-web-application-a-beginners-guide-to-building-a-simple-notes-app-and-word-counter\/","title":{"rendered":"\u5efa\u7acb\u60a8\u7684\u7b2c\u4e00\u500b Web \u61c9\u7528\u7a0b\u5f0f\uff1a\u5efa\u7acb\u7c21\u55ae\u7b46\u8a18\u61c9\u7528\u7a0b\u5f0f\u548c\u5b57\u6578\u8a08\u6578\u5668\u7684\u521d\u5b78\u8005\u6307\u5357"},"content":{"rendered":"<p>\u5728\u773e\u591a\u7684\u8a9e\u8a00\u548c\u6846\u67b6\u9078\u64c7\u4e2d\uff0c\u958b\u59cb\u60a8\u7684\u7a0b\u5f0f\u8a2d\u8a08\u4e4b\u65c5\u53ef\u80fd\u6703\u986f\u5f97\u4ee4\u4eba\u754f\u61fc\u3002\u4f60\u751a\u81f3\u53ef\u80fd\u6703\u60f3\u5230\u8b93\u4eba\u5de5\u667a\u6167\u4f86\u8655\u7406\u4e00\u5207\uff01\u7136\u800c\uff0c\u7db2\u8def\u7a0b\u5f0f\u8a2d\u8a08\u53ef\u4ee5\u662f\u4ee4\u4eba\u8208\u596e\u7684\u3001\u6613\u65bc\u7406\u89e3\u7684\u3001\u4e26\u4e14\u5b8c\u5168\u514d\u8cbb\u7684\uff01<\/p>\n<h2 id=\"what-youll-build\">\u4f60\u5c07\u5efa\u69cb\u4ec0\u9ebc<\/h2>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u60a8\u5c07\u5efa\u7acb\u4e00\u500b\u7c21\u55ae\u7684 Web \u61c9\u7528\u7a0b\u5e8f\uff0c\u65e8\u5728\u5132\u5b58\u6587\u5b57\u8a3b\u91cb\uff0c\u540c\u6642\u8a08\u7b97\u9019\u4e9b\u8a3b\u91cb\u4e2d\u7684\u5b57\u5143\u548c\u55ae\u5b57\u6578\u3002<\/p>\n<p>\u8a72\u61c9\u7528\u7a0b\u5f0f\u6703\u6301\u4e45\u4fdd\u5b58\u6578\u64da\uff0c\u5373\u4f7f\u5728\u5237\u65b0\u9801\u9762\u6216\u91cd\u65b0\u6253\u958b\u9801\u9762\u5f8c\u4e5f\u80fd\u6aa2\u7d22\u6587\u5b57\u3002\u9019\u662f\u4e00\u500b\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u53ef\u4ee5\u5feb\u901f\u5b58\u53d6\u91cd\u8981\u6587\u672c\uff0c\u7121\u8ad6\u662f\u5730\u5740\u3001URL \u9084\u662f\u5176\u4ed6\u4efb\u4f55\u5167\u5bb9\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"\u986f\u793a\u8a3b\u89e3\uff08\u5305\u62ec\u65e5\u66c6\u689d\u76ee\u548c URL \u6e05\u55ae\uff09\u7684\u7c21\u55ae\u6587\u5b57 Web \u61c9\u7528\u7a0b\u5f0f\u7bc4\u4f8b\u3002\" class=\"wp-image\" decoding=\"async\" height=\"569\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2025\/01\/web-app-example.webp\" title=\"\u986f\u793a\u8a3b\u89e3\uff08\u5305\u62ec\u65e5\u66c6\u689d\u76ee\u548c URL \u6e05\u55ae\uff09\u7684\u7c21\u55ae\u6587\u5b57 Web \u61c9\u7528\u7a0b\u5f0f\u7bc4\u4f8b\u3002\" width=\"960\"\/><\/figure>\n<p>\u6b64\u5916\uff0c\u8a72\u61c9\u7528\u7a0b\u5f0f\u9084\u8ffd\u8e64\u5b57\u5143\u548c\u5b57\u6578\uff0c\u70ba\u5b57\u4e32\u64cd\u4f5c\u63d0\u4f9b\u4e86\u7cbe\u5f69\u7684\u4ecb\u7d39\u3002\u96d6\u7136\u8a72\u61c9\u7528\u7a0b\u5f0f\u7684\u8a2d\u8a08\u5f88\u57fa\u790e\uff0c\u4f46\u672c\u6559\u7a0b\u4f7f\u60a8\u80fd\u5920\u638c\u63e1\u57fa\u672c\u7684 Web \u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u6280\u80fd\uff0c\u5f9e\u800c\u91cb\u653e\u7de8\u78bc\u7684\u5de8\u5927\u53ef\u80fd\u6027\u3002<\/p>\n<h2 id=\"how-youll-build-it\">\u4f60\u5c07\u5982\u4f55\u5efa\u69cb\u5b83<\/h2>\n<p>\u96d6\u7136 Web \u61c9\u7528\u7a0b\u5f0f\u53ef\u80fd\u5b58\u5728\u5f88\u5927\u5dee\u7570\uff0c\u4f46\u5b83\u5011\u901a\u5e38\u6574\u5408\u4e86\u4e09\u7a2e\u57fa\u672c\u6280\u8853\uff1aHTML\u3001CSS \u548c JavaScript\u3002\u9019\u4e9b\u5143\u4ef6\u4e2d\u7684\u6bcf\u4e00\u500b\u90fd\u5728 Web \u958b\u767c\u4e2d\u767c\u63ee\u8457\u81f3\u95dc\u91cd\u8981\u7684\u4f5c\u7528\uff1a<\/p>\n<ul>\n<li><strong>HTML\uff1a<\/strong>\u9019\u662f Web \u61c9\u7528\u7a0b\u5f0f\u7684\u7d50\u69cb\uff0c\u6c7a\u5b9a\u5167\u5bb9\u7684\u7d44\u7e54\u65b9\u5f0f\u3002 HTML \u5b9a\u7fa9\u6587\u5b57\u662f\u6bb5\u843d\u3001\u6a19\u984c\u6216\u6e05\u55ae\u9805\u76ee\u3002<\/li>\n<li><strong>CSS\uff1a<\/strong>\u7d1a\u806f\u6a23\u5f0f\u8868\u70ba\u60a8\u7684\u5167\u5bb9\u65b0\u589e\u6a23\u5f0f\uff0c\u53ef\u8b93\u60a8\u8b8a\u66f4\u984f\u8272\u3001\u5b57\u9ad4\u548c\u7248\u9762\u914d\u7f6e\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 CSS \u5c07\u5143\u7d20\u52a0\u7c97\u3001\u8abf\u6574\u908a\u6846\u4ee5\u53ca\u5728\u87a2\u5e55\u4e0a\u5b9a\u4f4d\u5143\u7d20\u3002<\/li>\n<li><strong>JavaScript\uff1a<\/strong>\u9019\u7a2e\u7a0b\u5f0f\u8a9e\u8a00\u662f\u5c07\u529f\u80fd\u6ce8\u5165\u5230 Web \u61c9\u7528\u7a0b\u5f0f\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002 JavaScript \u53ef\u4ee5\u5275\u5efa\u4e92\u52d5\u5f0f\u9ad4\u9a57\uff0c\u4f8b\u5982\u986f\u793a\/\u96b1\u85cf\u5143\u7d20\u6216\u5efa\u7acb\u8907\u96dc\u7684\u61c9\u7528\u7a0b\u5f0f\uff08\u4f8b\u5982\u904a\u6232\uff09\u3002<\/li>\n<\/ul>\n<figure class=\"wp-block-image\"><img alt=\"web.dev \u7db2\u7ad9\u7684\u4e3b\u9801\uff0c\u63d0\u4f9b HTML\u3001CSS \u548c JavaScript \u7684\u5b78\u7fd2\u8cc7\u6e90\u3002\" class=\"wp-image\" decoding=\"async\" height=\"734\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2025\/01\/web-dev-homepage.webp\" title=\"web.dev \u7db2\u7ad9\u7684\u4e3b\u9801\uff0c\u63d0\u4f9b HTML\u3001CSS \u548c JavaScript \u7684\u5b78\u7fd2\u8cc7\u6e90\u3002\" width=\"1388\"\/><\/figure>\n<h2 id=\"the-app-structure\">\u61c9\u7528\u7a0b\u5f0f\u7d50\u69cb<\/h2>\n<p>\u60a8\u8981\u5efa\u7acb\u7684\u61c9\u7528\u7a0b\u5f0f\u5305\u542b\u4e09\u500b\u7c21\u55ae\u7684\u6a94\u6848\uff1a<code>index.html<\/code>\u3001<code>styles.css<\/code>\u548c<code>script.js<\/code>\u3002<\/p>\n<p>\u904b\u884c\u6b64\u61c9\u7528\u7a0b\u5f0f\u4e0d\u5b58\u5728\u4efb\u4f55\u9ad8\u7d1a\u8981\u6c42 &#8211; \u53ea\u9700\u4e00\u500b\u7db2\u9801\u700f\u89bd\u5668\u5c31\u8db3\u5920\u4e86\u3002\u7531\u65bc\u9019\u662f\u4e00\u500b\u524d\u7aef\u61c9\u7528\u7a0b\u5e8f\uff0c\u56e0\u6b64\u4e0d\u9700\u8981 PHP \u6216\u672c\u5730\u4f3a\u670d\u5668\u7b49\u5f8c\u7aef\u8173\u672c\u8a9e\u8a00\u3002\u5b8c\u6210\u5f8c\uff0c\u53ea\u9700<code>index.html<\/code>\u5728\u700f\u89bd\u5668\u4e2d\u958b\u555f\u5373\u53ef\u67e5\u770b\u61c9\u7528\u7a0b\u5f0f\u7684\u904b\u884c\u60c5\u6cc1\u3002<\/p>\n<p>\u8a72\u61c9\u7528\u7a0b\u5f0f\u5229\u7528 Web Storage API \u4f86\u4fdd\u5b58\u6587\u672c\uff0c\u4f7f\u5176\u80fd\u5920\u4fdd\u7559\u8cc7\u8a0a\u800c\u7121\u9700\u5beb\u5165\u78c1\u789f\u6587\u4ef6\uff0c\u56e0\u70ba JavaScript \u7f3a\u4e4f\u6587\u4ef6\u7cfb\u7d71\u5b58\u53d6\u6b0a\u3002<\/p>\n<h2 id=\"how-to-build-the-note-taker\">\u5982\u4f55\u5efa\u69cb\u8a18\u4e8b\u672c<\/h2>\n<p>\u9996\u5148\u5728\u540c\u4e00\u76ee\u9304\u4e2d\u5efa\u7acb\u4e09\u500b\u5fc5\u8981\u7684\u6a94\u6848\u3002\u6216\u8005\uff0c\u60a8\u53ef\u4ee5\u5f9e\u6b64<a href=\"https:\/\/github.com\/bobbykjack\/text\" target=\"_blank\">GitHub \u5132\u5b58\u5eab<\/a>\u4e0b\u8f09\u6a94\u6848\u3002<\/p>\n<h3 id=\"building-the-structure-with-html\">\u4f7f\u7528 HTML \u5efa\u69cb\u7d50\u69cb<\/h3>\n<p>\u8a72<code>index.html<\/code>\u6587\u4ef6\u5217\u51fa\u4e86\u61c9\u7528\u7a0b\u5f0f\u7684\u5167\u5bb9\u7d50\u69cb\u3002\u5b83\u5305\u542b\u5c0d CSS \u548c JavaScript \u6a94\u6848\u7684\u5f15\u7528\uff0c\u5141\u8a31\u700f\u89bd\u5668\u5c07\u5b83\u5011\u5408\u4f75\u70ba\u7121\u7e2b\u9ad4\u9a57\u3002<\/p>\n<p>\u5c31\u50cf\u4efb\u4f55 HTML \u6587\u4ef6\u4e00\u6a23\uff0c\u4e3b\u6846\u67b6\u7531\u5305\u542b\u5143\u8cc7\u6599\u7684\u982d\u90e8\u548c\u5305\u542b\u5167\u5bb9\u7684\u4e3b\u9ad4\u7d44\u6210\uff1a<\/p>\n<p> <code><br \/>\n<span>&lt;!DOCTYPE html&gt;<\/span><br \/>\n<span>&lt;html&gt;<\/span><br \/>\n<span>&lt;head&gt;<\/span><br \/>\n<span>...&lt;\/head&gt;<\/span><br \/>\n<span>&lt;body&gt;<\/span><br \/>\n<span>...&lt;\/body&gt;<\/span><br \/>\n<span>&lt;\/html&gt;<\/span><br \/>\n<\/code><\/p>\n<p>head \u90e8\u5206\u5305\u542b\u7c21\u77ed\u7684\u5143\u6578\u64da\uff0c\u5305\u62ec\u9801\u9762\u6a19\u984c\uff08\u5728\u700f\u89bd\u5668\u7684\u6a19\u984c\u5217\u4e2d\u53ef\u898b\uff09\u548c\u6587\u4ef6\u7684\u9023\u7d50<code>styles.css<\/code>\uff1a<\/p>\n<p> <code><br \/>\n<span>&lt;title&gt;Text&lt;\/title&gt;<\/span><br \/>\n<span>&lt;link rel=\"stylesheet\"href=\"styles.css\"\/&gt;<\/span><br \/>\n<\/code><\/p>\n<p>\u4e3b\u9ad4\u66f4\u52a0\u8a73\u7d30\uff0c\u5305\u62ec\u95dc\u9375\u96f6\u4ef6\uff1a<\/p>\n<p> <code><br \/>\n<span>&lt;div id=\"counter\"&gt;<\/span><br \/>\n<span>words: &lt;span id=\"words\"&gt;0&lt;\/span&gt;<\/span><br \/>\n<span>\/ characters: &lt;span id=\"chars\"&gt;0&lt;\/span&gt;<\/span><br \/>\n<span>&lt;\/div&gt;<\/span><br \/>\n<span>&lt;textarea id=\"text\"autofocus=\"1\"&gt;&lt;\/textarea&gt;<\/span><br \/>\n<span>&lt;script src=\"script.js\"&gt;&lt;\/script&gt;<\/span><br \/>\n<\/code><\/p>\n<p>\u8a72<code>div<\/code>\u5143\u7d20\u88ab\u6a19\u8b58\u70ba\u201c\u8a08\u6578\u5668\u201d\uff0c\u5305\u542b\u55ae\u5b57\u548c\u5b57\u5143\u8a08\u6578\u3002\u5b83\u4fdd\u7559\u5728\u9802\u90e8\u4e26\u96a8\u8457\u6587\u5b57\u8b8a\u66f4\u800c\u52d5\u614b\u66f4\u65b0\u3002<\/p>\n<p>\u6ce8\u610f\u5c6c\u6027\u7684\u4f7f\u7528\u81f3\u95dc\u91cd\u8981<code>id<\/code>\u2014\u2014\u5b83\u5011\u7684\u7368\u7279\u503c\u6709\u52a9\u65bc\u8a2d\u8a08\u9019\u4e9b\u5143\u7d20\u7684\u6a23\u5f0f\u4e26\u78ba\u5b9a\u5b83\u5011\u7684\u529f\u80fd\u3002<\/p>\n<p>\u5b83<code>textarea<\/code>\u70ba\u7528\u6236\u63d0\u4f9b\u4e86\u4e00\u500b\u8f38\u5165\u6587\u5b57\u7684\u5340\u57df\uff0c\u8a72<code>autofocus<\/code>\u5c6c\u6027\u78ba\u4fdd\u5b83\u53ef\u4ee5\u5728\u9801\u9762\u52a0\u8f09\u6642\u9032\u884c\u8f38\u5165\u3002\u6700\u5f8c\uff0cHTML \u5f15\u7528\u8a72<code>script.js<\/code>\u6a94\u6848\u3002<\/p>\n<p>\u6b64\u6642\uff0c<code>index.html<\/code>\u5728\u700f\u89bd\u5668\u4e2d\u958b\u555f\u3002\u5b83\u9084\u7121\u6cd5\u904b\u884c\uff0c\u770b\u8d77\u4f86\u53ef\u80fd\u4e0d\u592a\u6b63\u78ba\uff0c\u4f46\u662f\u6aa2\u67e5\u6bcf\u500b\u968e\u6bb5\u7684\u9032\u5ea6\u6703\u5f88\u6709\u5e6b\u52a9\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"\u4f7f\u7528\u9810\u8a2d\u700f\u89bd\u5668\u6a23\u5f0f\u7684\u7b46\u8a18 Web \u61c9\u7528\u7a0b\u5f0f\u7684\u8996\u5716\uff0c\u986f\u793a\u6240\u6709\u5167\u5bb9\u90fd\u96c6\u4e2d\u5728\u5de6\u4e0a\u89d2\u3002\" class=\"wp-image\" decoding=\"async\" height=\"569\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2025\/01\/web-app-no-style.webp\" title=\"\u4f7f\u7528\u9810\u8a2d\u700f\u89bd\u5668\u6a23\u5f0f\u7684\u7b46\u8a18 Web \u61c9\u7528\u7a0b\u5f0f\u7684\u8996\u5716\uff0c\u986f\u793a\u6240\u6709\u5167\u5bb9\u90fd\u96c6\u4e2d\u5728\u5de6\u4e0a\u89d2\u3002\" width=\"960\"\/><\/figure>\n<h3 id=\"making-things-look-good-with-css\">\u4f7f\u7528 CSS \u8b93\u4e8b\u60c5\u770b\u8d77\u4f86\u66f4\u597d<\/h3>\n<p>\u96d6\u7136\u9019\u500b\u57fa\u672c\u61c9\u7528\u7a0b\u5f0f\u4e0d\u9700\u8981\u9032\u884c\u5927\u91cf\u7684\u8a2d\u8a08\u8abf\u6574\uff0c\u4f46\u6211\u5011\u53ef\u4ee5\u900f\u904e\u4e00\u4e9b\u6a23\u5f0f\u4f86\u6539\u9032\u5176\u4f48\u5c40\u3002<\/p>\n<p>\u9996\u5148\u6211\u5011\u5efa\u7acb\u8eca\u8eab\u6a23\u5f0f\uff0c\u52fe\u52d2\u51fa\u6574\u9ad4\u5916\u89c0\uff1a<\/p>\n<p> <code><br \/>\n<span>body {<\/span><br \/>\n<span> margin: 0;<\/span><br \/>\n<span> padding: 0;<\/span><br \/>\n<span> display: grid;<\/span><br \/>\n<span> min-height: 100vh;<\/span><br \/>\n<span> grid-template-rows: min-content 1fr;<\/span><br \/>\n<span>}<\/span><br \/>\n<\/code><\/p>\n<p>\u6b64 CSS \u63a1\u7528<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/CSS\/CSS_grid_layout\" target=\"_blank\">\u7db2\u683c\u4f48\u5c40<\/a>\u5c07\u55ae\u5b57\u548c\u5b57\u5143\u8a08\u6578\u6392\u5217\u5728\u6587\u5b57\u5340\u57df\u4e0a\u65b9\u7684\u7a84\u884c\u4e2d\u3002\u6b64<code>grid-template-rows<\/code>\u5c6c\u6027\u6c7a\u5b9a\u8a08\u6578\u884c\u61c9\u4f54\u7528\u76e1\u53ef\u80fd\u5c11\u7684\u7a7a\u9593\uff08min-content\uff09\uff0c\u800c\u6587\u5b57\u5340\u57df\u586b\u5165\u5269\u9918\u7a7a\u9593\uff081fr\uff09\u3002<\/p>\n<p>\u8a08\u6578\u5668\u884c\u63a5\u6536\u57fa\u672c\u6a23\u5f0f\u4ee5\u5c07\u5176\u8207\u6587\u5b57\u5340\u57df\u5340\u5206\u958b\u4f86\uff0c\u4e3b\u8981\u662f\u900f\u904e\u5176\u80cc\u666f\uff1a<\/p>\n<p> <code><br \/>\n<span>#counter {<\/span><br \/>\n<span> font-family: sans-serif;<\/span><br \/>\n<span> background-color: #f7f7f7;<\/span><br \/>\n<span> text-align: center;<\/span><br \/>\n<span> width: 100%;<\/span><br \/>\n<span> padding: 0 0.5em 0;<\/span><br \/>\n<span>}<\/span><br \/>\n<\/code><\/p>\n<p>\u6587\u5b57\u5340\u57df\u7684\u6a23\u5f0f\u78ba\u4fdd\u6587\u5b57\u6e05\u6670\u6613\u8b80\uff0c\u4e26\u7559\u6709\u8db3\u5920\u7684\u7a7a\u767d\uff1a<\/p>\n<p> <code><br \/>\n<span>textarea {<\/span><br \/>\n<span> width: 100%;<\/span><br \/>\n<span> height: 100%;<\/span><br \/>\n<span> font-size: 16pt;<\/span><br \/>\n<span> padding: 1em;<\/span><br \/>\n<span> box-sizing: border-box;<\/span><br \/>\n<span> outline: 0;<\/span><br \/>\n<span> border: none;<\/span><br \/>\n<span> border-top: 1px solid #999;<\/span><br \/>\n<span>}<\/span><br \/>\n<\/code><\/p>\n<figure class=\"wp-block-image\"><img alt=\"\u5177\u6709\u81ea\u8a02\u6a23\u5f0f\u7684\u7b46\u8a18\u61c9\u7528\u7a0b\u5f0f\u5728\u9802\u90e8\u986f\u793a\u8a08\u6578\u5668\u6b04\uff0c\u5728\u4e0b\u9762\u986f\u793a\u5168\u5c3a\u5bf8\u7684\u6587\u5b57\u5340\u57df\u3002\" class=\"wp-image\" decoding=\"async\" height=\"569\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2025\/01\/web-app-with-style.webp\" title=\"\u5177\u6709\u81ea\u8a02\u6a23\u5f0f\u7684\u7b46\u8a18\u61c9\u7528\u7a0b\u5f0f\u5728\u9802\u90e8\u986f\u793a\u8a08\u6578\u5668\u6b04\uff0c\u5728\u4e0b\u9762\u986f\u793a\u5168\u5c3a\u5bf8\u7684\u6587\u5b57\u5340\u57df\u3002\" width=\"960\"\/><\/figure>\n<h3 id=\"adding-functionality-with-javascript\">\u4f7f\u7528 JavaScript \u65b0\u589e\u529f\u80fd<\/h3>\n<p>\u5960\u5b9a\u4e86\u57fa\u790e\u5f8c\uff0c\u60a8\u5c31\u53ef\u4ee5\u5c07\u529f\u80fd\u6ce8\u5165\u5230\u60a8\u7684\u61c9\u7528\u7a0b\u5f0f\u4e2d\u2014\u8ce6\u4e88\u61c9\u7528\u7a0b\u5f0f\u751f\u547d\u7684\u7a0b\u5f0f\u78bc\uff01<\/p>\n<p>\u5728\u6df1\u5165\u7de8\u78bc\u4e4b\u524d\uff0c\u5fc5\u9808\u6982\u8ff0\u9810\u671f\u7684\u529f\u80fd\u3002\u5c0d\u65bc\u6b64\u61c9\u7528\u7a0b\u5e8f\uff0c\u60a8\u5c07\u91cd\u9ede\u95dc\u6ce8\u5169\u500b\u4e3b\u8981\u76ee\u6a19\uff1a<\/p>\n<ul>\n<li>\u4fdd\u7559\u4e26\u91cd\u65b0\u8f09\u5165\u8f38\u5165\u7684\u6587\u5b57\u3002<\/li>\n<li>\u52d5\u614b\u66f4\u65b0\u5b57\u5143\u548c\u5b57\u6578\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u529f\u80fd\u9700\u8981\u66f4\u65b0\u67d0\u4e9b\u6587\u4ef6\u5143\u7d20\u3002\u56e0\u6b64\uff0c\u9996\u5148\u4f7f\u7528<code>getElementById<\/code>\u4ee5\u4e0b\u65b9\u6cd5\u4f86\u53d6\u5f97\u9019\u4e9b\u7bc0\u9ede\u7684\u53c3\u8003\uff1a<\/p>\n<p> <code><br \/>\n<span>const words = document.getElementById(\"words\");<\/span><br \/>\n<span>const chars = document.getElementById(\"chars\");<\/span><br \/>\n<span>const textarea = document.getElementById(\"text\");<\/span><br \/>\n<\/code><\/p>\n<p>\u9019\u88e1\uff0c<code>words<\/code>\u3001<code>chars<\/code>\u3001 \u548c<code>textarea<\/code>\u5c0d\u61c9\u65bc\u6587\u4ef6\u4e2d\u5404\u81ea\u7684\u90e8\u5206\uff0c\u7531\u5b83\u5011\u7684 ID \u5c6c\u6027\u6a19\u8b58\u3002<\/p>\n<p>\u63a5\u4e0b\u4f86\uff0c\u900f\u904e\u5c07\u61c9\u7528\u7a0b\u5f0f\u8a2d\u5b9a\u70ba\u5728\u6587\u5b57\u8b8a\u66f4\u6642\u505a\u51fa\u56de\u61c9\u4f86\u5f15\u5165\u4e92\u52d5\u6027\uff1a<\/p>\n<p> <code><br \/>\n<span>textarea.addEventListener(\"input\", function(ev) {<\/span><br \/>\n<span> localStorage.setItem(\"text\", ev.target.value);<\/span><br \/>\n<span> update_counts(ev.target.value);<\/span><br \/>\n<span>});<\/span><br \/>\n<\/code><\/p>\n<p>\u6b64<code>addEventListener<\/code>\u65b9\u6cd5\u7d81\u5b9a\u4e00\u500b\u51fd\u6578\uff0c\u4ee5\u4fbf\u5728\u767c\u751f\u6307\u5b9a\u4e8b\u4ef6\u6642\u89f8\u767c\u3002\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u4e00\u65e6\u4f7f\u7528\u8005\u8207\u6587\u5b57\u5340\u57df\u4ea4\u4e92\uff0c\u300cinput\u300d\u4e8b\u4ef6\u5c31\u6703\u89f8\u767c\u8a72\u51fd\u6578\u3002<\/p>\n<p>\u63a5\u4e0b\u4f86\uff0cWeb Storage API \u7528\u65bc\u4fdd\u5b58\u6587\u5b57\u5340\u57df\u7684\u7576\u524d\u5167\u5bb9\uff0c\u900f\u904e<code>ev.target.value<\/code>.\u6b64<code>setItem<\/code>\u65b9\u6cd5\u5c07\u5bc6\u9470\u8207\u8981\u5132\u5b58\u7684\u8cc7\u6599\u76f8\u95dc\u806f\u3002<\/p>\n<p>\u70ba\u4e86\u78ba\u4fdd\u5728\u61c9\u7528\u7a0b\u5f0f\u521d\u59cb\u5316\u6216\u5237\u65b0\u6642\u8f09\u5165\u6587\u672c\uff0c\u8acb\u65b0\u589e\u53e6\u4e00\u500b\u5075\u807d\u5668\uff1a<\/p>\n<p> <code><br \/>\n<span>window.addEventListener(\"load\", function(ev) {<\/span><br \/>\n<span> var text = localStorage.getItem(\"text\");<\/span><br \/>\n<span> textarea.value = text;<\/span><br \/>\n<span> update_counts(text);<\/span><br \/>\n<span>});<\/span><br \/>\n<\/code><\/p>\n<p>\u6b64\u5075\u807d\u5668\u56de\u61c9\u8996\u7a97\u7684\u8f09\u5165\u4e8b\u4ef6\u3002\u8996\u7a97\u8f09\u5165\u5f8c\uff0c\u5b83\u6703\u6aa2\u7d22\u5df2\u5132\u5b58\u7684\u6587\u5b57\u4e26\u76f8\u61c9\u5730\u8a2d\u5b9a\u6587\u5b57\u5340\u57df\u7684\u503c\uff0c\u540c\u6642\u547c\u53eb<code>update_counts()<\/code>\u5237\u65b0\u55ae\u5b57\u548c\u5b57\u5143\u8a08\u6578\u3002<\/p>\n<p>\u5176\u9918\u529f\u80fd\u4f4d\u65bc<code>update_counts()<\/code>\u51fd\u6578\u4e2d\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p> <code><br \/>\n<span>function update_counts(text) {<\/span><br \/>\n<span> chars.innerHTML = text.length;<\/span><br \/>\n<span> words.innerHTML = text.split(' ').length;<\/span><br \/>\n<span>}<\/span><br \/>\n<\/code><\/p>\n<p>\u8207\u6587\u5b57\u5340\u57df\u4e0d\u540c\uff0c\u7d14\u6587\u5b57\u7f3a\u5c11 value \u5c6c\u6027\uff1b\u56e0\u6b64\uff0c<code>innerHTML<\/code>\u5c07\u4f7f\u7528\u8a72\u5c6c\u6027\u3002<code>length<\/code>\u5b57\u4e32\u7684\u5c6c\u6027\u6aa2\u7d22\u7e3d\u5b57\u5143\u6578\u3002<\/p>\n<p>\u70ba\u4e86\u5c07\u6587\u5b57\u5206\u89e3\u70ba\u55ae\u8a5e\uff0c\u6211\u5011\u4f7f\u7528<code>text.split(' ')<\/code>\uff0c\u5b83\u5728\u6bcf\u500b\u7a7a\u683c\u5b57\u5143\u5206\u5272\u5b57\u4e32\uff0c\u7522\u751f\u55ae\u5b57\u6578\u7d44\u3002\u7d50\u679c\u6578\u7d44\u7684 length \u5c6c\u6027\u63d0\u4f9b\u4e86\u5b57\u6578\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u4f7f\u7528\u6b64\u7a0b\u5f0f\u78bc\u60a8\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u6311\u6230\uff1a<\/p>\n<ol>\n<li>\u5982\u679c\u6c92\u6709\u5468\u570d\u7684\u7a7a\u683c\u5b57\u7b26\uff0c\u5b83\u5c07\u7121\u6cd5\u6b63\u78ba\u8a08\u7b97\u4e00\u884c\u4e2d\u7684\u55ae\u5b57\u3002<\/li>\n<li>\u5982\u679c\u4e0d\u5b58\u5728\u6587\u672c\uff0c\u5247\u7531\u65bc<code>split<\/code>\u64cd\u4f5c\u65b9\u5f0f\uff0c\u5b83\u5c07\u4e0d\u6e96\u78ba\u5730\u5831\u544a\u55ae\u5b57\u3002<\/li>\n<\/ol>\n<p>\u82e5\u8981\u89e3\u6c7a\u7b2c\u4e00\u500b\u554f\u984c\uff0c\u8acb\u8003\u616e\u62c6\u5206\u6b63\u898f\u8868\u793a\u5f0f\u4ee5\u8003\u616e\u7a7a\u767d\u5b57\u5143\uff1a<code>\\s<\/code>\u3002\u8981\u89e3\u6c7a\u7b2c\u4e8c\u500b\u554f\u984c\uff0c\u8acb\u904e\u6ffe\u6389\u6240\u6709\u7a7a\u5b57\u4e32\uff1a<\/p>\n<p> <code><br \/>\n<span> words.innerHTML = text.split(\/\\s\/).filter(function(n) { return n! = ''; }).length;<\/span><br \/>\n<\/code><\/p>\n<figure class=\"wp-block-image\"><img alt=\"\u6b64\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u5305\u542b\u7bc4\u4f8b\u6587\u672c\uff0c\u986f\u793a\u6e96\u78ba\u7684\u5b57\u5143\u548c\u5b57\u6578\u3002\" class=\"wp-image\" decoding=\"async\" height=\"569\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2025\/01\/web-app-final.webp\" title=\"\u6b64\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u5305\u542b\u7bc4\u4f8b\u6587\u672c\uff0c\u986f\u793a\u6e96\u78ba\u7684\u5b57\u5143\u548c\u5b57\u6578\u3002\" width=\"960\"\/><\/figure>\n<p>\u53ea\u9700\u5e7e\u500b\u57fa\u672c\u6587\u4ef6\u5373\u53ef\u5efa\u7acb\u6709\u7528\u7684 Web \u61c9\u7528\u7a0b\u5f0f\uff01\u60a8\u53ef\u4ee5\u900f\u904e\u6574\u5408\u5176\u4ed6\u529f\u80fd\u4f86\u64f4\u5c55\u9019\u500b\u7c21\u55ae\u7684\u7b46\u8a18\u61c9\u7528\u7a0b\u5e8f\uff0c\u4f8b\u5982\u4f7f\u7528<a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/API\/Window\/location\" target=\"_blank\">window.location \u5c6c\u6027<\/a>\u4f86\u5b58\u53d6 URL \u6216\u5141\u8a31\u900f\u904e\u6539\u8b8a\u50b3\u905e\u7d66 \u7684\u540d\u7a31\u4f86\u4fdd\u5b58\u591a\u500b\u7b46\u8a18<code>localStorage.setItem<\/code>\u3002<\/p>\n<h3>\u984d\u5916\u7684\u898b\u89e3<\/h3>\n<h4><strong>1. \u672c Web \u61c9\u7528\u7a0b\u5f0f\u6559\u5b78\u7684\u5148\u6c7a\u689d\u4ef6\u662f\u4ec0\u9ebc\uff1f<\/strong><\/h4>\n<p>\u60a8\u6240\u9700\u8981\u7684\u53ea\u662f\u5c0d HTML\u3001CSS \u548c JavaScript \u6709\u57fa\u672c\u7684\u4e86\u89e3\u3002\u6587\u5b57\u7de8\u8f2f\u5668\uff08\u4f8b\u5982 VSCode\uff09\u548c Web \u700f\u89bd\u5668\u7b49\u5de5\u5177\u4e5f\u6703\u6709\u6240\u5e6b\u52a9\u3002<\/p>\n<h4><strong>2. \u6211\u53ef\u4ee5\u4fee\u6539\u6b64\u7db2\u9801\u61c9\u7528\u7a0b\u5f0f\u4ee5\u6dfb\u52a0\u66f4\u591a\u529f\u80fd\u55ce\uff1f<\/strong><\/h4>\n<p>\u7d55\u5c0d\u5730\uff01\u672c\u6559\u7a0b\u63d0\u4f9b\u4e86\u57fa\u790e\u3002\u60a8\u53ef\u4ee5\u65b0\u589e\u529f\u80fd\uff0c\u4f8b\u5982\u5132\u5b58\u591a\u500b\u7b46\u8a18\u3001\u5c07\u7b46\u8a18\u5206\u985e\uff0c\u751a\u81f3\u5be6\u73fe\u641c\u5c0b\u529f\u80fd\uff01<\/p>\n<h4><strong>3. 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