{"id":12568,"date":"2023-11-28T22:58:38","date_gmt":"2023-11-28T14:58:38","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12568"},"modified":"2023-11-29T22:23:55","modified_gmt":"2023-11-29T14:23:55","slug":"javascript-zhong-ajax-shi-shen-me-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-ajax-shi-shen-me-2\/","title":{"rendered":"JavaScript \u4e2d ajax \u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

\u5728 JavaScript \u4e2d\uff0cAjax\uff08Asynchronous JavaScript and XML\uff09\u662f\u4e00\u79cd\u7528\u4e8e\u521b\u5efa\u5f02\u6b65\u7f51\u7edc\u8bf7\u6c42\u7684\u6280\u672f\u3002\u5b83\u5141\u8bb8\u5728\u4e0d\u5237\u65b0\u6574\u4e2a\u9875\u9762\u7684\u60c5\u51b5\u4e0b\uff0c\u901a\u8fc7\u5728\u540e\u53f0\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u6570\u636e\u4ea4\u6362\uff0c\u66f4\u65b0\u9875\u9762\u7684\u90e8\u5206\u5185\u5bb9\u3002<\/p>\n

Ajax \u7684\u6838\u5fc3\u5728\u4e8e\u4f7f\u7528 XMLHttpRequest<\/code> \u5bf9\u8c61\uff08\u73b0\u5728\u4e5f\u6709\u65b0\u7684\u6280\u672f\uff0c\u6bd4\u5982 fetch API<\/code> \u6216\u8005 Axios<\/code> \u5e93\uff09\uff0c\u5b83\u80fd\u591f\u5728\u4e0d\u91cd\u65b0\u52a0\u8f7d\u6574\u4e2a\u9875\u9762\u7684\u60c5\u51b5\u4e0b\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\u5e76\u83b7\u53d6\u6570\u636e\u3002<\/p>\n

\u901a\u8fc7 Ajax\uff0c\u53ef\u4ee5\u8fdb\u884c\u4ee5\u4e0b\u64cd\u4f5c\uff1a<\/p>\n

    \n
  1. \u5f02\u6b65\u901a\u4fe1<\/strong>\uff1a\u53ef\u4ee5\u5728\u540e\u53f0\u5411\u670d\u52a1\u5668\u53d1\u9001\u8bf7\u6c42\u5e76\u63a5\u6536\u6570\u636e\uff0c\u800c\u4e0d\u4f1a\u4e2d\u65ad\u7528\u6237\u5bf9\u9875\u9762\u7684\u64cd\u4f5c\u3002<\/li>\n
  2. \u5c40\u90e8\u66f4\u65b0<\/strong>\uff1a\u53ef\u4ee5\u66f4\u65b0\u9875\u9762\u7684\u90e8\u5206\u5185\u5bb9\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u52a0\u8f7d\u6574\u4e2a\u9875\u9762\u3002<\/li>\n
  3. \u5b9e\u73b0\u52a8\u6001\u4ea4\u4e92<\/strong>\uff1a\u53ef\u4ee5\u5b9e\u73b0\u6839\u636e\u7528\u6237\u64cd\u4f5c\u7684\u52a8\u6001\u4ea4\u4e92\uff0c\u6bd4\u5982\u5b9e\u65f6\u641c\u7d22\u3001\u804a\u5929\u3001\u6570\u636e\u52a0\u8f7d\u7b49\u3002<\/li>\n<\/ol>\n

    \u4e00\u4e2a\u57fa\u672c\u7684 Ajax \u8bf7\u6c42\u793a\u4f8b\u4f7f\u7528 XMLHttpRequest<\/code> \u5bf9\u8c61\uff1a<\/p>\n

    const xhr = new XMLHttpRequest();\nxhr.onreadystatechange = function() {\n  if (xhr.readyState === XMLHttpRequest.DONE) {\n    if (xhr.status === 200) {\n      console.log(xhr.responseText); \/\/ \u83b7\u53d6\u54cd\u5e94\u6570\u636e\n    } else {\n      console.error('\u8bf7\u6c42\u5931\u8d25');\n    }\n  }\n};\n\nxhr.open('GET', 'https:\/\/api.example.com\/data', true);\nxhr.send();\n<\/code><\/pre>\n
    Ajax \u5df2\u6210\u4e3a\u73b0\u4ee3 Web \u5f00\u53d1\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u4f7f\u5f97 Web \u9875\u9762\u80fd\u591f\u66f4\u52a0\u52a8\u6001\u548c\u4ea4\u4e92\uff0c\u4e3a\u7528\u6237\u63d0\u4f9b\u66f4\u6d41\u7545\u7684\u4f53\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728 JavaScript \u4e2d\uff0cAjax\uff08Asynchronous JavaScript and XML\uff09\u662f\u4e00\u79cd […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-12568","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12568"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12568\/revisions"}],"predecessor-version":[{"id":13545,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12568\/revisions\/13545"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12568"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}