離開（關(guān)閉）網(wǎng)頁前彈出提示

2024-09-05 12:18:35

字體：大中小

供稿：網(wǎng)友

離開或關(guān)閉網(wǎng)頁前的彈出提示特效，避免用戶誤關(guān)閉，也可提醒用戶保存當(dāng)前網(wǎng)頁上的數(shù)據(jù)，以免丟失，這個效果中需用JS就能輕易實現(xiàn)，本代碼是個不錯的參考。

<html><head><title>倒計時</title><script language=javascript> var exittxt="源碼愛好者";function realexit() {if(exittxt) event.returnValue = exittxt}</script><style> .time{color:#ffffff;font-family:verdana,geneva,helveticafont-size:9pt}a:link{text-decoration:none;color:#000000}a:active{text-decoration:none;color:#000000}a:visited{text-decoration:none;color:#000000}a:hover{text-decoration:none;color:#000000}</style><script language="javascript"> var time_now_server,time_now_client,time_end,time_server_client,timerID;time_end=new Date("Jan 20, 2002 00:00:00");time_end=time_end.getTime();time_now_server=new Date("Dec 21, 2001 13:11:1");time_now_server=time_now_server.getTime();time_now_client=new Date();time_now_client=time_now_client.getTime();time_server_client=time_now_server-time_now_client;setTimeout("show_time()",1000);function show_time(){timer.innerHTML =time_server_client;var time_now,time_distance,str_time;var int_day,int_hour,int_minute,int_second;var time_now=new Date();time_now=time_now.getTime()+time_server_client;time_distance=time_end-time_now;if(time_distance>0){int_day=Math.floor(time_distance/86400000)time_distance-=int_day*86400000;int_hour=Math.floor(time_distance/3600000)time_distance-=int_hour*3600000;int_minute=Math.floor(time_distance/60000)time_distance-=int_minute*60000;int_second=Math.floor(time_distance/1000) if(int_hour<10)int_hour="0"+int_hour;if(int_minute<10)int_minute="0"+int_minute;if(int_second<10)int_second="0"+int_second;str_time="<font style='font-size:14pt;color:#28C84A'>"+int_day+"</font><font face='黑體' style='font-size:13pt;'>天</font><br>"+int_hour+":"+int_minute+":"+int_second;timer.innerHTML=str_time;setTimeout("show_time()",1000);}else{timer.innerHTML ="over";clearTimeout(timerID)}}</script><style> .time{color:#000000;font-family:verdana;font-size:9pt}</style></head><BODY BGCOLOR=#FFFFFF topmargin=2 leftmargin=2 onbeforeunload="realexit()"><div   class="iwvjtn8m0"   id="Layer1" style="position:absolute; width:160px; height:187px; z-index:1"><table width=160 border=0 cellpadding=0 cellspacing=0><tr><td colspan=3> </td></tr><tr><td width="47"> </td><td><table width=65 cellpadding=3 cellspacing=0 border=0><tr><td align=center class="time"><div   class="iwvjtn8m0"   id="timer" style="font-size:9pt;color:red"></div></td></tr></table></td><td width="46"> </td></tr><tr><td colspan=3> </td></tr></table></div></BODY></HTML>

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