JavaScript 获取网络时间（非本机时间）

第一种 var xhr = new XMLHttpRequest(); if( !xhr ){ xhr = new ActiveXObject("Microsoft.XMLHTTP"); } xhr.open("HEAD",location.href,true); xhr.onreadystatechange=function(){ if( xhr.readyState == 4 && xhr.status == 200){ console.log(xhr.getResponseHeader("Date")); } } xhr.send(null);

打印：

Wed, 21 Oct 2020 10:01:29 GMT 第二种 var httpRequest = new XMLHttpRequest(); httpRequest.open('GET', 'http://quan.suning.com/getSysTime.do', true); httpRequest.setRequestHeader("Content-type","application/x-www-form-urlencoded"); httpRequest.send(null); httpRequest.onreadystatechange = function () { if (httpRequest.readyState == 4 && httpRequest.status == 200) { var json = httpRequest.responseText; console.log(json); } };

打印：

{"sysTime2":"2020-10-22 12:28:35","sysTime1":"20201022122835"}