js取时间（server+client）
一：用js获取server时间var xmlHttp = false; //获取服务器时间 try { xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e2) { xmlHttp = false; } } if (!xmlHttp && typeof XMLHttpRequest != 'undefined') { xmlHttp = new XMLHttpRequest(); } xmlHttp.open("GET", "null.txt", false); xmlHttp.setRequestHeader("Range", "bytes=-1"); xmlHttp.send(null); severtime=new Date(xmlHttp.getResponseHeader("Date"));
二：用js+jquery取client时间，并在页面同步显示
$(document).ready(function(){change_online_time();});function change_online_time(){var client_date = new Date();var h = ( client_date.getHours() > 9 )? client_date.getHours() : "0"+client_date.getHours();var m = ( client_date.getMinutes() > 9 ) ? client_date.getMinutes() : "0"+client_date.getMinutes();var s = ( client_date.getSeconds() > 9 ) ? client_date.getSeconds() : "0"+client_date.getSeconds();$('#client-time').html(h+":"+m+":"+s );setTimeout('change_online_time()',1000);}
html code:
<div>客户端时间：<span id="client-time">0</span></div>
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