{"id":65159,"date":"2025-05-03T17:32:05","date_gmt":"2025-05-03T09:32:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65159\/"},"modified":"2025-05-03T17:32:05","modified_gmt":"2025-05-03T09:32:05","slug":"%e9%ab%98%e6%95%88%e6%8a%93%e5%8f%96-javascript-%e7%bd%91%e7%ab%99-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65159\/","title":{"rendered":"\u9ad8\u6548\u6293\u53d6 JavaScript \u7f51\u7ad9"},"content":{"rendered":"

\"\u9ad8\u6548\u6293\u53d6<\/p>\n

\u4f7f\u7528 javascript \u8fdb\u884c\u7f51\u7edc\u722c\u884c\u7684\u53ef\u80fd\u6027 <\/h2>\n

\u9759\u6001\u7f51\u7ad9\uff1aaxios \u548c cheerio<\/strong>
\u8ba9\u6211\u4eec\u9010\u6b65\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 javascript \u6293\u53d6\u9759\u6001\u7535\u5b50\u5546\u52a1\u7f51\u7ad9\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4e24\u4e2a\u6d41\u884c\u7684\u5e93\uff1a\u7528\u4e8e http \u8bf7\u6c42\u7684 axios \u548c\u7528\u4e8e\u89e3\u6790 html \u7684 cheerio\u3002<\/p>\n

*1\u3002\u5b89\u88c5\u4f9d\u8d56\u9879 *<\/em>
\u4f7f\u7528 npm \u5b89\u88c5 axios \u548c cheerio\uff1a<\/p>\n

npm \u5b89\u88c5 axios cheerio<\/p>\n

*2\u3002\u521b\u5efa\u811a\u672c *<\/em>
\u521b\u5efa\u4e00\u4e2a javascript \u6587\u4ef6\uff0c\u4f8b\u5982b. scrapeecommerce.js \u5e76\u5728\u4ee3\u7801\u7f16\u8f91\u5668\u4e2d\u6253\u5f00\u5b83\u3002<\/p>\n

*3\u3002\u5bfc\u5165\u6a21\u5757*<\/em>
\u5c06 axios \u548c cheerio \u5bfc\u5165\u5230\u60a8\u7684\u811a\u672c\u4e2d\uff1a<\/p>\n

const axios = require(‘axios’);<\/p>\n

const cheerio = require(‘cheerio’);<\/p>\n

*4\u3002\u5b9a\u4e49\u76ee\u6807 url *<\/em>
\u9009\u62e9\u60a8\u8981\u8bbf\u95ee\u7684\u7535\u5b50\u5546\u52a1\u7f51\u7ad9\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5047\u8bbe\u7684 url http:\/\/example-ecommerce.com\u3002\u5c06\u5176\u66ff\u6362\u4e3a\u6240\u9700\u7684 url\uff1a<\/p>\n

const url = ‘http:\/\/example-ecommerce.com’;<\/p>\n

*5\u3002\u83b7\u53d6 html \u5185\u5bb9 *<\/em>
\u4f7f\u7528axios\u5411\u76ee\u6807url\u53d1\u9001get\u8bf7\u6c42\uff0c\u83b7\u53d6html\u5185\u5bb9\uff1a<\/p>\n

axios.get(url)<\/p>\n

.then(\u54cd\u5e94=> {<\/p>\n

const html = response.data;<\/p>\n

\/\/ \u73b0\u5728\u53ef\u4ee5\u89e3\u6790 html \u5185\u5bb9<\/p>\n

})<\/p>\n

.catch(\u9519\u8bef=> {<\/p>\n

console.error(‘\u83b7\u53d6\u9875\u9762\u65f6\u51fa\u9519\uff1a’, error);<\/p>\n

});<\/p>\n

*6\u3002\u89e3\u6790 html \u5e76\u63d0\u53d6\u6570\u636e *<\/em>
\u4f7f\u7528 cheerio \u89e3\u6790 html \u4ee3\u7801\u5e76\u63d0\u53d6\u60a8\u60f3\u8981\u7684\u4fe1\u606f\uff0c\u4f8b\u5982\u4ea7\u54c1\u540d\u79f0\u548c\u4ef7\u683c\uff1a<\/p>\n

axios.get(url)<\/p>\n

.then(\u54cd\u5e94=> {<\/p>\n

const html = response.data;<\/p>\n

const $ = cheerio.load(html); <\/p>\n

const products = [];  \n\n$('.product').each((index, element) => {  \n  const name = $(element).find('.product-name').text().trim();  \n  const price = $(element).find('.product-price').text().trim();  \n  products.push({ name, price });  \n});  \n\nconsole.log(products);  \n<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
})<\/p>\n
 .catch(\u9519\u8bef=> {<\/p>\n
 console.error(‘\u83b7\u53d6\u9875\u9762\u65f6\u51fa\u9519\uff1a’, error);<\/p>\n
 });<\/p>\n
*\u8981\u70b9*<\/em><\/p>\n
    \n
  • axios.get(url)\uff1a\u53d1\u9001 get \u8bf7\u6c42\u5e76\u8fd4\u56de\u627f\u8bfa\u3002 <\/li>\n
  • .then(response => { \u2026 })\uff1a\u5982\u679c\u8bf7\u6c42\u6210\u529f\uff0c\u5219html\u5185\u5bb9\u5728response.data\u4e2d\u3002 <\/li>\n
  • cheerio.load(html)\uff1a\u5c06 html \u5185\u5bb9\u52a0\u8f7d\u5230 cheerio \u4e2d\uff0c\u4ee5\u8fdb\u884c\u7c7b\u4f3c jquery \u7684 dom \u64cd\u4f5c\u3002 <\/li>\n
  • $(‘.product’).each((index, element) => { \u2026 })\uff1a\u8fed\u4ee3\u6240\u6709 .product \u5143\u7d20\u3002 <\/li>\n
  • $(element).find(‘.product-name’).text().trim()\uff1a\u63d0\u53d6\u4ea7\u54c1\u540d\u79f0\u3002 <\/li>\n
  • $(element).find(‘.product-price’).text().trim()\uff1a\u63d0\u53d6\u4ea7\u54c1\u7684\u4ef7\u683c\u3002 <\/li>\n
  • products.push({ name,price })\uff1a\u5c06\u4ea7\u54c1\u4fe1\u606f\u6dfb\u52a0\u5230\u4ea7\u54c1\u6570\u7ec4\u4e2d\u3002 <\/li>\n
  • console.log(products)\uff1a\u8f93\u51fa\u63d0\u53d6\u7684\u4fe1\u606f\u3002<\/li>\n<\/ul>\n
    *\u5b8c\u6574\u793a\u4f8b\u811a\u672c\uff1a*<\/em>
     const axios = require(‘axios’);<\/p>\n
     const cheerio = require(‘cheerio’); <\/p>\n
    const url = ‘http:\/\/example-ecommerce.com’; <\/p>\n
    axios.get(url)<\/p>\n
     .then(\u54cd\u5e94=> {<\/p>\n
     const html = response.data;<\/p>\n
     const $ = cheerio.load(html); <\/p>\n
    const products = [];  \n\n$('.product').each((index, element) => {  \n  const name = $(element).find('.product-name').text().trim();  \n  const price = $(element).find('.product-price').text().trim();  \n  products.push({ name, price });  \n});  \n\nconsole.log(products);  \n<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    })<\/p>\n
     .catch(\u9519\u8bef=> {<\/p>\n
     console.error(‘\u83b7\u53d6\u9875\u9762\u65f6\u51fa\u9519\uff1a’, error);<\/p>\n
     });<\/p>\n
    *\u7740\u9646\u9875\u81ea\u5b9a\u4e49\uff1a*<\/em><\/p>\n
      \n
    • \u9009\u62e9\u5668\uff1a.product\u3001.product-name \u548c .product-price \u9009\u62e9\u5668\u5fc5\u987b\u9002\u5e94\u76ee\u6807\u9875\u9762\u7684\u5b9e\u9645 html \u7ed3\u6784\u3002 <\/li>\n
    • \u5176\u4ed6\u6570\u636e\uff1a\u6709\u5173\u5176\u4ed6\u4fe1\u606f\uff08\u4f8b\u5982\u4ea7\u54c1\u56fe\u7247\u3001\u94fe\u63a5\u3001\u63cf\u8ff0\uff09\uff0c\u8bf7\u68c0\u67e5\u76f8\u5e94\u7684 html \u7ed3\u6784\u3002<\/li>\n<\/ul>\n
       \u4f7f\u7528 javascript \u6293\u53d6\u7f51\u7ad9\u7684\u7f51\u9875\u6293\u53d6\u5de5\u5177 <\/h2>\n
      \u5982\u679c\u60a8\u6700\u8fd1\u9700\u8981 \u3001ruby \u6216\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u8fdb\u884c\u7f51\u9875\u6293\u53d6\uff0coctoparse \u662f\u4e00\u4e2a\u51fa\u8272\u7684\u5de5\u5177\uff0c\u7279\u522b\u662f\u5bf9\u4e8e\u652f\u6301 javascript \u7684\u7f51\u7ad9\u3002<\/p>\n
      \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
      \u4e3e\u4e2a\u5177\u4f53\u7684\u4f8b\u5b50\uff1a\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u76ee\u6807\u7f51\u7ad9\uff0c\u60f3\u8981\u5f00\u59cb\u6293\u53d6\uff0c\u4f60\u9996\u5148\u5e94\u8be5\u68c0\u67e5\u8be5\u7f51\u7ad9\u662f\u5426\u88ab\u963b\u6b62js\u6293\u53d6\u3002\u4e0d\u540c\u7684\u7f51\u7ad9\u4f7f\u7528\u4e0d\u540c\u7684\u4fdd\u62a4\u65b9\u6cd5\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u4e00\u4e9b\u65f6\u95f4\u548c\u4ee4\u4eba\u6cae\u4e27\u7684\u5c1d\u8bd5\u624d\u80fd\u610f\u8bc6\u5230\u95ee\u9898\uff0c\u7279\u522b\u662f\u5982\u679c\u6293\u53d6\u6ca1\u6709\u4ea7\u751f\u9884\u671f\u7684\u7ed3\u679c\u3002\u7136\u800c\uff0c\u4f7f\u7528\u7f51\u7edc\u6293\u53d6\u5de5\u5177\uff0c\u6570\u636e\u63d0\u53d6\u8fc7\u7a0b\u4f1a\u987a\u5229\u8fdb\u884c\u3002<\/p>\n
      \u8bb8\u591a\u7f51\u7edc\u6293\u53d6\u5de5\u5177\u53ef\u4ee5\u8ba9\u60a8\u514d\u53bb\u7f16\u5199\u722c\u866b\u7684\u9ebb\u70e6\u3002 octoparse \u5728\u6293\u53d6\u5927\u91cf javascript \u9875\u9762\u65b9\u9762\u7279\u522b\u9ad8\u6548\uff0c\u53ef\u4ee5\u4ece 99% \u7684\u7f51\u9875\u4e2d\u63d0\u53d6\u6570\u636e\uff0c\u5305\u62ec\u4f7f\u7528 ajax \u7684\u7f51\u9875\u3002\u5b83\u8fd8\u63d0\u4f9b\u9a8c\u8bc1\u7801\u89e3\u51b3\u670d\u52a1\u3002 octoparse \u53ef\u514d\u8d39\u4f7f\u7528\uff0c\u5e76\u63d0\u4f9b\u81ea\u52a8\u53d1\u73b0\u529f\u80fd\u548c 100 \u591a\u4e2a\u6613\u4e8e\u4f7f\u7528\u7684\u6a21\u677f\uff0c\u53ef\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u63d0\u53d6\u3002\u65b0\u7528\u6237\u8fd8\u53ef\u4ee5\u4eab\u53d7 14 \u5929\u7684\u8bd5\u7528\u671f\u3002<\/p>\n
      \u4ee5\u4e0a\u5c31\u662f\u9ad8\u6548\u6293\u53d6 JavaScript \u7f51\u7ad9\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u4f7f\u7528 javascript \u8fdb\u884c\u7f51\u7edc\u722c\u884c\u7684\u53ef\u80fd\u6027 \u9759\u6001\u7f51\u7ad9\uff1aaxios \u548c cheerio \u8ba9\u6211\u4eec\u9010\u6b65\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 javascript \u6293\u53d6\u9759\u6001\u7535\u5b50\u5546\u52a1\u7f51\u7ad9\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u4e24\u4e2a\u6d41\u884c\u7684\u5e93\uff1a\u7528\u4e8e http \u8bf7\u6c42\u7684 axios \u548c\u7528\u4e8e\u89e3\u6790 html \u7684 cheerio\u3002 *1\u3002\u5b89\u88c5\u4f9d\u8d56\u9879 * \u4f7f\u7528 npm \u5b89\u88c5 axios \u548c cheerio\uff1a npm \u5b89\u88c5 axios cheerio *2\u3002\u521b\u5efa\u811a\u672c * \u521b\u5efa\u4e00\u4e2a javascript \u6587\u4ef6\uff0c\u4f8b\u5982b. scrapeecommerce.js \u5e76\u5728\u4ee3\u7801\u7f16\u8f91\u5668\u4e2d\u6253\u5f00\u5b83\u3002 *3\u3002\u5bfc\u5165\u6a21\u5757* \u5c06 axios \u548c cheerio \u5bfc\u5165\u5230\u60a8\u7684\u811a\u672c\u4e2d\uff1a const axios = require(‘axios’); const cheerio = require(‘cheerio’); *4\u3002\u5b9a\u4e49\u76ee\u6807 url * \u9009\u62e9\u60a8\u8981\u8bbf\u95ee\u7684\u7535\u5b50\u5546\u52a1\u7f51\u7ad9\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5047\u8bbe\u7684 url http:\/\/example-ecommerce.com\u3002\u5c06\u5176\u66ff\u6362\u4e3a\u6240\u9700\u7684 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-65159","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=65159"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65159\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}