说明: 网页浏览时间提示

效果:

代码:

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()" >
[Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]

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