ajax\u662f\u4e00\u79cd\u80fd\u591f\u5b9e\u73b0\u5c40\u90e8\u7f51\u9875\u5237\u65b0\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u4f7f\u7f51\u9875\u5f02\u6b65\u5237\u65b0\u3002
\najax\u7684\u5b9e\u73b0\u4e3b\u8981\u5305\u62ec\u56db\u4e2a\u6b65\u9aa4\uff1a
\n1\u3001\t\u521b\u5efa\u6838\u5fc3\u5bf9\u8c61XMLhttpRequest\uff1b
\n2\u3001\t\u5229\u7528open\u65b9\u6cd5\u6253\u5f00\u4e0e\u670d\u52a1\u5668\u7684\u8fde\u63a5\uff1b
\n3\u3001\t\u5229\u7528send\u65b9\u6cd5\u53d1\u9001\u8bf7\u6c42\uff1b("POST\u201d\u8bf7\u6c42\u65f6\uff0c\u8fd8\u9700\u989d\u5916\u8bbe\u7f6e\u8bf7\u6c42\u5934)
\n4\u3001\t\u76d1\u542c\u670d\u52a1\u5668\u54cd\u5e94\uff0c\u63a5\u6536\u8fd4\u56de\u503c\u3002
\n\/\/1-\u521b\u5efa\u6838\u5fc3\u5bf9\u8c61
\n\/\/\u8be5\u5bf9\u8c61\u6709\u517c\u5bb9\u95ee\u9898\uff0c\u4f4e\u7248\u672c\u6d4f\u89c8\u5668\u5e94\u4f7f\u7528ActiveXObject
\nconst xthhp = new XMLHttpRequest()\uff1b
\n\/\/2-\u8fde\u63a5\u670d\u52a1\u5668
\n\/\/open(method,url,async)
\nxhttp. open("POST", "http\uff1a\/\/localhost\uff1a3000", true)
\n\u3003\u8bbe\u7f6e\u8bf7\u6c42\u5934
\nxmlHttp. setRequestHeader("Content-Type", "application\/x-www-form-urlencoded")\uff1b
\n\/\/3-\u53d1\u9001\u8bf7\u6c42
\n\/\/send\u65b9\u6cd5\u53d1\u9001\u8bf7\u6c42\u53c2\u6570\uff0c\u5982\u4e3aGET\u65b9\u6cd5\uff0c\u5219\u5728open\u4e2durl\u540e\u62fc\u63a5
\nxhttp. send({
\n_id\uff1a 123
\n})
\n\u30034-\u63a5\u6536\u670d\u52a1\u5668\u54cd\u5e94
\n\/\/onreadys tat echange\u4e8b\u4ef6\uff0c\u4f1a\u5728xhttp\u7684\u72b6\u6001\u53d1\u751f\u53d8\u5316\u65f6\u81ea\u52a8\u8c03\u7528
\nxhttp. onreadystatechange = function() {
\n\/\/\u72b6\u6001\u7801\u51715\u79cd\uff1a0-\u672aopen 1-\u5df2open 2-\u5df2send 3-\u8bfb\u53d6\u54cd\u5e94 4-\u54cd\u5e94\u8bfb\u53d6\u7ed3\u675f
\nif (xhttp. readyState = 4 && xhttp.status = 200) {
\nalert ("ajax\u8bf7\u6c42\u5df2\u5b8c\u6210")
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
ajax\u662f\u4e00\u79cd\u80fd\u591f\u5b9e\u73b0\u5c40\u90e8\u7f51\u9875\u5237\u65b0\u7684\u6280\u672f\uff0c\u53ef\u4ee5\u4f7f\u7f51\u9875\u5f02\u6b65\u5237\u65b0\u3002 ajax\u7684\u5b9e\u73b0\u4e3b\u8981\u5305\u62ec\u56db\u4e2a\u6b65\u9aa4\uff1a 1\u3001 \u521b\u5efa\u6838 […]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-12978","post","type-post","status-publish","format-standard","hentry","category-qianduan"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12978","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\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12978"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12978\/revisions"}],"predecessor-version":[{"id":12979,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12978\/revisions\/12979"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12978"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}