{"id":2062,"date":"2019-01-16T20:48:00","date_gmt":"2019-01-16T12:48:00","guid":{"rendered":"http:\/\/www.imzouyang.com\/blog\/?p=2062"},"modified":"2020-10-28T22:46:47","modified_gmt":"2020-10-28T14:46:47","slug":"%e5%b0%81%e8%a3%85%e4%b8%80%e4%b8%aa-ajax","status":"publish","type":"post","link":"http:\/\/www.imzouyang.com\/blog\/archives\/2062.html","title":{"rendered":"\u5c01\u88c5\u4e00\u4e2a Ajax"},"content":{"rendered":"\n<p>XMLHttpRequest \u6d89\u53ca\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\uff0c\u6240\u4ee5\u521b\u5efa ajax \u65f6\u9700\u8981\u505a\u517c\u5bb9\u8003\u8651\u3002\u5177\u4f53\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b\uff0c\u4ee3\u7801\u5185\u8fdb\u884c\u6ce8\u91ca\u8bf4\u660e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\n\n\/\/\u53c2\u6570\u8bf4\u660e\uff1amethod\u52a0\u5f15\u53f7  url\u52a0\u5f15\u53f7   data\u52a0\u5f15\u53f7(\u5f62\u5f0f\u4e3aname=123&amp;age=20 \u8fd9\u79cd\u5f62\u5f0f)  \u5982\u679c\u6ca1\u6709data\uff0c\u5199\"\"\u4f5c\u4e3a\u53c2\u6570\uff0cfnSucc \u6210\u529f\u6267\u884c\u56de\u8c03\uff08\u6bd4\u5982  function(x){\n\u2026\u2026} \uff09\uff0cfnFaild \u5931\u8d25\u6267\u884c\u56de\u8c03\nfunction ajax(method, url ,data, fnSucc, fnFaild)\n{\n    \/\/1.\u521b\u5efaAjax\u5bf9\u8c61\n    var oAjax = null;\n    if(window.XMLHttpRequest)  \/\/\u73b0\u4ee3\u6d4f\u89c8\u5668\n    {\n        oAjax = new XMLHttpRequest();\n    }\n    else  \/\/IE\u6d4f\u89c8\u5668\n    {\n        oAjax = new ActiveXObject(\"microsoft.XMLHTTP\");\n    }\n\n    if(method == \"get\" &amp;&amp; data)\n    {\n        url += \"?\" + data +\"&amp;\"+new Date().getTime();\n    }\n    if(method == \"get\" &amp;&amp; !data)\n    {\n        url += \"?\" + new Date().getTime();\n    }\n\n    \/\/2.\u8fde\u63a5\u670d\u52a1\u5668\uff08\u6253\u5f00\u548c\u670d\u52a1\u5668\u7684\u8fde\u63a5\uff09\n    oAjax.open(method, url, true);   \/\/url\u8bf7\u6c42\u5730\u5740\uff0c\u8bbe\u7f6e\u4e3a\u5f02\u6b65\u65b9\u5f0ftrue\n\n\n    if(method == \"get\" )\n    {\n        \/\/3.\u53d1\u9001\u8bf7\u6c42\n        oAjax.send();\n    }\n    else\n    {    \n        oAjax.setRequestHeader(\"Content-Type\",\"application\/x-www-form-urlencoded\");      \/\/\u8bbe\u7f6e\u8bf7\u6c42\u5934\uff0c\u6a21\u62df\u8868\u5355post\u63d0\u4ea4\uff0c\u544a\u8bc9\u540e\u7aef\uff0c\u6211\u4eec\u662f\u7528\u4ec0\u4e48\u683c\u5f0f\u7f16\u7801\u7684\n        oAjax.send(data);\n    }\n\n\n    \/\/4.\u63a5\u6536\u8fd4\u56de\n    oAjax.onreadystatechange = function()   \n    {\n        if(oAjax.readyState == 4)    \/\/\u6d4f\u89c8\u5668\u548c\u670d\u52a1\u5668\u8fdb\u884c\u5230\u4e86\u54ea\u4e00\u6b65   4\u8868\u793a\u8bfb\u53d6\u5b8c\u6210\uff0c\u4f46\u662f\u4e0d\u4e00\u5b9a\u7ed3\u679c\u662f\u6210\u529f\n        {\n            if(oAjax.status == 200)    \/\/\u8bfb\u53d6\u5b8c\u6210\u7684\u7ed3\u679c  \u6210\u529f\n            {\n                \/\/alert(\"\u6210\u529f:\"+oAjax.responseText)\uff1b\n                fnSucc(oAjax.responseText)   \/\/\u628aresponseText\u4f5c\u4e3a\u53c2\u6570\u4f20\u8fdb\u51fd\u6570    \u5982\u679c\u8981\u5904\u7406\u7684\u6570\u636e\u662fjson\uff0c\u90a3\u4e48\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528JS\u7684JSON\u5bf9\u8c61\u8fdb\u884c\u64cd\u4f5c\n            }\n            else\n            {\n                \/\/alert(\"\u5931\u8d25\");\n                if(fnFaild)   \/\/\u7b2c\u4e09\u4e2a\u53c2\u6570\u51fd\u6570\u5982\u679c\u5b58\u5728\n                {\n                    fnFaild(oAjax.status); \n                    \/\/\u53ef\u4ee5\u4f20\u9012\u4e00\u4e2a\u72b6\u6001\u8fdb\u53bb\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u8bbe\u7f6efnFaild\u51fd\u6570\u5185\u5f53\u5728\u4ec0\u4e48status\u503c\u65f6\uff0c\u6267\u884c\u4ec0\u4e48\u51fd\u6570\n                }\n            }\n        };\n\n    };\n};<\/code><\/pre>\n\n\n\n<p>\u8be6\u7ec6\u539f\u7406\uff0c\u89c1\u6587\u7ae0\uff1a<a href=\"http:\/\/www.imzouyang.com\/blog\/archives\/1797.html\">XMLHttpRequest Level 2 \u4f7f\u7528<\/a><br><br>\uff08\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>XMLHttpRequest \u6d89\u53ca\u6d4f\u89c8\u5668\u517c\u5bb9\u6027\uff0c\u6240\u4ee5\u521b\u5efa ajax \u65f6\u9700\u8981\u505a\u517c\u5bb9\u8003\u8651\u3002\u5177\u4f53\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b\uff0c\u4ee3\u7801\u5185 &hellip; <a href=\"http:\/\/www.imzouyang.com\/blog\/archives\/2062.html\" class=\"read-more\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text sr-only\">\u5c01\u88c5\u4e00\u4e2a Ajax<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"aside","meta":[],"categories":[30],"tags":[],"_links":{"self":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/2062"}],"collection":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/comments?post=2062"}],"version-history":[{"count":4,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/2062\/revisions"}],"predecessor-version":[{"id":2082,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/posts\/2062\/revisions\/2082"}],"wp:attachment":[{"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/media?parent=2062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/categories?post=2062"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.imzouyang.com\/blog\/wp-json\/wp\/v2\/tags?post=2062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}