{"id":1551,"date":"2020-10-10T16:20:20","date_gmt":"2020-10-10T08:20:20","guid":{"rendered":"https:\/\/www.yusian.com\/blog\/?p=1551"},"modified":"2020-12-01T12:43:25","modified_gmt":"2020-12-01T04:43:25","slug":"%e5%8f%91%e9%80%81ajax%e8%af%b7%e6%b1%82%e7%9a%844%e7%a7%8d%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/javascript\/2020\/10\/10\/1620201551.html","title":{"rendered":"\u53d1\u9001Ajax\u8bf7\u6c42\u76844\u79cd\u65b9\u5f0f"},"content":{"rendered":"

1\u3001XMLHttpRequest<\/h2>\n

XMLHttpRequest\u662fWebAPI\u4e2d\u7684\u6807\u51c6\u5bf9\u8c61\uff0c\u53ef\u53d1\u8d77Ajax\u8bf7\u6c42\u3002\u4e09\u6b65\u66f2\uff1a
\n* \u521b\u5efaXMLHttpRequest\u5bf9\u8c61\uff1b
\n* open\u65b9\u6cd5\u8bbe\u7f6e\u8bf7\u6c42\u65b9\u5f0f\u53caurl\u5730\u5740\uff1b
\n* send\u65b9\u6cd5\u6b63\u5f0f\u53d1\u8d77\u8bf7\u6c42\uff1b<\/p>\n

<script>\n    let xhr = new XMLHttpRequest();\n    xhr.onreadystatechange = event => {\n        console.log(event);\n    }\n    xhr.open('get', 'https:\/\/jsonplaceholder.typicode.com\/todos');\n    xhr.send();\n<\/script>\n<\/code><\/pre>\n
\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u6709\u4e00\u4e9b\u5e38\u7528\u7684\u5c5e\u6027\u53ca\u65b9\u6cd5
\n* responseType<\/code>\u5c5e\u6027\u8bbe\u7f6e\u8fd4\u56de\u6570\u636e\u7c7b\u578b\uff1b
\n* onreadystatechange<\/code>\u5c5e\u6027\u76d1\u542c\u72b6\u6001\u53d8\u5316\uff0c\u83b7\u53d6\u8fd4\u56de\u6570\u636e\uff1b
\n* timeout<\/code>\u5c5e\u6027\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\uff1b
\n* ontimeout<\/code>\u5c5e\u6027\u8bbe\u7f6e\u8d85\u65f6\u56de\u8c03\u65b9\u6cd5\uff1b
\n* onerror<\/code>\u5c5e\u6027\u8bbe\u7f6e\u9519\u8bef\u56de\u8c03\u65b9\u6cd5\uff1b
\n* \u5b98\u65b9\u6587\u6863\uff1aMDN\u53c2\u8003\u94fe\u63a5<\/a><\/p>\n
2\u3001Fetch<\/h2>\n
  fetch\u662f\u4e00\u4e2a\u5168\u5c40\u4f5c\u7528\u4e0b\u7684\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u8fd4\u56de\u4e00\u4e2aPromise\uff0c\u662f\u5b98\u65b9\u63d0\u4f9b\u7684\u4e00\u4e2a\u65b0\u7684\u53d1\u8d77Ajax\u8bf7\u6c42\u7684WebAPI\u3002<\/p>\n
  fetch\u4f7f\u7528\u4e5f\u975e\u5e38\u7b80\u5355\uff0c\u9ed8\u8ba4get\u8bf7\u6c42\u53ef\u4ee5\u53ea\u4f20\u5165\u4e00\u4e2aurl\u5730\u5740\u3002<\/p>\n
fetch('https:\/\/jsonplaceholder.typicode.com\/todos\/1').then(response => {\n    console.log(response);\n    return response.json();\n}).then(json => {\n    console.log(json);\n})\n<\/code><\/pre>\n
\u5f15\u7528\u5b98\u65b9\u7684\u4e00\u6bb5\u8bdd\uff1a<\/p>\n
\n  Fetch \u63d0\u4f9b\u4e86\u5bf9 Request<\/code> \u548c Response<\/code> \uff08\u4ee5\u53ca\u5176\u4ed6\u4e0e\u7f51\u7edc\u8bf7\u6c42\u6709\u5173\u7684\uff09\u5bf9\u8c61\u7684\u901a\u7528\u5b9a\u4e49\u3002\u4f7f\u4e4b\u4eca\u540e\u53ef\u4ee5\u88ab\u4f7f\u7528\u5230\u66f4\u591a\u5730\u5e94\u7528\u573a\u666f\u4e2d\uff1a\u65e0\u8bba\u662f service worker\u3001Cache API\u3001\u53c8\u6216\u8005\u662f\u5176\u4ed6\u5904\u7406\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u65b9\u5f0f\uff0c\u751a\u81f3\u662f\u4efb\u4f55\u4e00\u79cd\u9700\u8981\u4f60\u81ea\u5df1\u5728\u7a0b\u5e8f\u4e2d\u751f\u6210\u54cd\u5e94\u7684\u65b9\u5f0f\u3002\n<\/p><\/blockquote>\n
  \u6211\u7684\u7406\u89e3\u662f\uff0cfetch\u5728\u5c06\u6765\u4f1a\u6210\u4e3aXMLHttpRequest\u7684\u4e00\u4e2a\u66ff\u4ee3\u54c1\uff0c\u56e0\u4e3afetch\u5bf9\u5f02\u6b65\u8bf7\u6c42\u548c\u54cd\u5e94\u8fdb\u884c\u4e86\u91cd\u65b0\u8bbe\u8ba1\uff0c\u4f1a\u66f4\u52a0\u901a\u7528\u4e0e\u7075\u6d3b\uff0c\u4f7f\u7528\u8d77\u6765\u4e5f\u5f88\u7b80\u5355\u3002\u4f46\u5c31\u76ee\u524d\u800c\u8a00\uff0c\u517c\u5bb9\u6027\u8fd8\u4e0d\u662f\u5f88\u597d\uff0c\u4e00\u4e9b\u529f\u80fd\u8fd8\u5728\u5b8c\u5584\u4e2d\u2026\u2026<\/p>\n
3\u3001jQuery<\/h2>\n
  jQuery\u7edd\u5bf9\u662f\u4e00\u4e2a\u4f1f\u5927\u7684\u53d1\u660e\uff0c\u5b83\u4f7f\u5f97dom\u64cd\u4f5c\u53d8\u5f97\u7b80\u5355\u800c\u76f4\u89c2\uff0c\u5e76\u4e14\u8fd8\u89e3\u51b3\u4e86\u4e00\u5927\u90e8\u5206\u7684\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u5728Ajax\u8bf7\u6c42\u65b9\u9762\uff0cjQuery\u540c\u6837\u5bf9XMLHttpRequest\u8fdb\u884c\u4e86\u5c01\u88c5\uff0c\u4f7f\u5f97Ajax\u8bf7\u6c42\u53d8\u5f97\u7b80\u5355\u800c\u76f4\u89c2\u3002
\n* \u5e38\u89c4\u8c03\u7528<\/p>\n
\/\/ jQuery Ajax\u8bf7\u6c42\n$.ajax('https:\/\/jsonplaceholder.typicode.com\/todos', {\n    data: { \/\/ \u6570\u636e\n        a: 1,\n        b: 2\n    },\n    headers: {  \/\/ \u5934\u90e8\u4fe1\u606f\n        ContentType: 'application\/json',\n        a: 1\n    },\n    success: function (response) {\n        console.log('ajax: ', response);\n    }\n}).done(function (response) {\n    \/\/ \u7ed3\u679c\u56de\u8c03\n    console.log('done', response);\n})\n\/\/ \u6700\u7b80\u8c03\u7528\n$.ajax('https:\/\/jsonplaceholder.typicode.com\/todos').then(response => {\n    console.log(response);\n})\n<\/code><\/pre>\n
    \n
  • jQuery\u9488\u5bf9get\u4e0epost\u8bf7\u6c42\u8fd8\u6709\u4e24\u4e2a\u7b80\u5316\u7684\u8c03\u7528<\/li>\n<\/ul>\n
    \/\/ jQuery Ajax Get\u8bf7\u6c42\n$.get('http:\/\/localhost:3000\/jquery', {\n    a: 1,\n    b: 2\n}, function (response) {\n    console.log('get:', response);\n})\n\n\n\/\/ jQuery Ajax Post\u8bf7\u6c42\n$.post('http:\/\/localhost:3000\/jquery', {\n    a: 1,\n    b: 2\n}, function (response) {\n    console.log(response);\n})\n<\/code><\/pre>\n
    4\u3001Axios<\/h2>\n
      \n
    • axios\u7684\u4f7f\u7528\u4e0ejQuery\u7c7b\u4f3c<\/li>\n<\/ul>\n
      \/\/ \u8bbe\u7f6e\u9ed8\u8ba4\u53c2\u6570\naxios.defaults.baseURL = 'http:\/\/127.0.0.1:3000';\n\nAxios\u53d1\u9001post\u8bf7\u6c42\naxios.post('http:\/\/127.0.0.1:3000\/axios', {\n    a: 1,\n    b: 2\n}, {\n    headers: {\n        'ContentType': 'application\/json'\n    }\n}).then(function (response) {\n    console.log(response);\n})\n\n\/\/ axios\u53d1\u9001\u8bf7\u6c42\naxios({\n    method: 'get',\n    url: 'axios',\n    headers: {\n        \/\/ \u8bbe\u7f6eContent-Type\u65e0\u6548\n        'Content-Type': 'application\/json'\n    },\n    params: {\n        a: 1,\n        b: 2\n    },\n    data: {\n        key: 'value'\n    }\n}).then(response => {\n    console.log(response);\n})\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
      1\u3001XMLHttpRequest XMLHttpRequest\u662fWebAPI\u4e2d\u7684\u6807\u51c6\u5bf9\u8c61\uff0c\u53ef\u53d1\u8d77Ajax\u8bf7\u6c42\u3002\u4e09\u6b65\u66f2\uff1a * \u521b\u5efaXMLHttpRequest\u5bf9\u8c61\uff1b * open\u65b9\u6cd5\u8bbe\u7f6e\u8bf7\u6c42\u65b9\u5f0f\u53caurl\u5730\u5740\uff1b * send\u65b9\u6cd5\u6b63\u5f0f\u53d1\u8d77\u8bf7\u6c42\uff1b <script> let xhr = new XMLHttpRequest(); xhr.onreadystatechange = event => { console.log(event); } xhr.open(‘get’, ‘https:\/\/jsonplaceholder.typicode.com\/todos’); xhr.send(); <\/script> \u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u6709\u4e00\u4e9b\u5e38\u7528\u7684\u5c5e\u6027\u53ca\u65b9\u6cd5 * responseType\u5c5e\u6027\u8bbe\u7f6e\u8fd4\u56de\u6570\u636e\u7c7b\u578b\uff1b * onreadystatechange\u5c5e\u6027\u76d1\u542c\u72b6\u6001\u53d8\u5316\uff0c\u83b7\u53d6\u8fd4\u56de\u6570\u636e\uff1b * timeout\u5c5e\u6027\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\uff1b * ontimeout\u5c5e\u6027\u8bbe\u7f6e\u8d85\u65f6\u56de\u8c03\u65b9\u6cd5\uff1b * onerror\u5c5e\u6027\u8bbe\u7f6e\u9519\u8bef\u56de\u8c03\u65b9\u6cd5\uff1b * \u5b98\u65b9\u6587\u6863\uff1aMDN\u53c2\u8003\u94fe\u63a5 2\u3001Fetch   fetch\u662f\u4e00\u4e2a\u5168\u5c40\u4f5c\u7528\u4e0b\u7684\u51fd\u6570\uff0c\u8be5\u51fd\u6570\u8fd4\u56de\u4e00\u4e2aPromise\uff0c\u662f\u5b98\u65b9\u63d0\u4f9b\u7684\u4e00\u4e2a\u65b0\u7684\u53d1\u8d77Ajax\u8bf7\u6c42\u7684WebAPI\u3002   fetch\u4f7f\u7528\u4e5f\u975e\u5e38\u7b80\u5355\uff0c\u9ed8\u8ba4get\u8bf7\u6c42\u53ef\u4ee5\u53ea\u4f20\u5165\u4e00\u4e2aurl\u5730\u5740\u3002 fetch(‘https:\/\/jsonplaceholder.typicode.com\/todos\/1’).then(response => { console.log(response); return response.json(); }).then(json => { console.log(json); }) \u5f15\u7528\u5b98\u65b9\u7684\u4e00\u6bb5\u8bdd\uff1a Fetch \u63d0\u4f9b\u4e86\u5bf9 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[242,244,243,53,73,237],"class_list":["post-1551","post","type-post","status-publish","format-standard","hentry","category-javascript","tag-ajax","tag-axios","tag-fetch","tag-javascript","tag-jquery","tag-237"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1551"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1551\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}