有什么问题请到评论中发表<br> <!-- Saved From url=http://www.mb5u.com/jscode --> <!-- Web Design bbs url=http://www.mb5u.com/bbs--> <!--要完成此效果需要两个步骤 第一步：把如下代码加入到<body>区域中--> <SCRIPT LANGUAGE=\"JavaScript\"> <!-- Begin var onHours = \" \"; var onMinutes = \" \"; var onSeconds = \" \"; var offHours = 0; var offMinutes = 0; var offSeconds = 0; var logSeconds = 0; var logMinutes = 0; var logHours = 0; var OnTimeValue = \" \"; var OffTimeValue = \" \"; var PageTimeValue = \" \"; function getLogonTime() { var now = new Date(); var ampm = (now.getHours() >= 12) ? \" P.M.\" : \" A.M.\" var Hours = now.getHours(); Hours = ((Hours > 12) ? Hours - 12 : Hours); var Minutes = ((now.getMinutes() < 10) ? \":0\" : \":\") + now.getMinutes(); var Seconds = ((now.getSeconds() < 10) ? \":0\" : \":\") + now.getSeconds(); OnTimeValue =(\" \" + Hours + Minutes + Seconds + \" \" + ampm); onHours = now.getHours(); onMinutes = now.getMinutes(); onSeconds = now.getSeconds(); } function getLogoffTime() { var now = new Date(); var ampm = (now.getHours() >= 12) ? \" P.M.\" : \" A.M.\" var Hours = now.getHours(); Hours = ((Hours > 12) ? Hours - 12 : Hours); var Minutes = ((now.getMinutes() < 10) ? \":0\" : \":\") + now.getMinutes(); var Seconds = ((now.getSeconds() < 10) ? \":0\" : \":\") + now.getSeconds(); OffTimeValue =(\" \" + Hours + Minutes + Seconds + \" \" + ampm); offHours = now.getHours(); offMinutes = now.getMinutes(); offSeconds = now.getSeconds(); timer(); } function timer() { if (offSeconds >= onSeconds) { logSeconds = offSeconds - onSeconds; } else { offMinutes -= 1; logSeconds = (offSeconds + 60) - onSeconds; } if (offMinutes >= onMinutes) { logMinutes = offMinutes - onMinutes; } else { offHours -= 1; logMinutes = (offMinutes + 60) - onMinutes; } logHours = offHours - onHours; logHours = ((logHours < 10) ? \"0\" : \":\") + logHours; logMinutes = ((logMinutes < 10) ? \":0\" : \":\") + logMinutes; logSeconds = ((logSeconds < 10) ? \":0\" : \":\") +logSeconds; PageTimeValue =(\" \" + logHours + logMinutes + logSeconds); displayTimes(); } function displayTimes() { alert(\"\n登陆时间 : \" +OnTimeValue+\"\n\n现在时间 : \"+OffTimeValue+\"\n\n停留时间 : \" + PageTimeValue); } // End --> </SCRIPT> <FORM> <INPUT TYPE=\"button\" value=\"看登陆本页的情况\" onClick=\"getLogoffTime()\"> </FORM> <!--第二步：把“onLoad=\"getLogonTime()\"”加在<body>标记里 例如：--> <body onLoad=\"getLogonTime()\">
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