Javascript倒计时和setTimout错误

问题描述

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function initCountdown(countdownDiv,endDate,endMsg) {

current_date = new Date();                                  
time_left = endDate.getTime() - current_date.getTime();

if(time_left>0) {
    time_left = Math.floor(time_left/1000);                 
    days=0;hours=0;mins=0;secs=0;out=\"\";                

    days=Math.floor(time_left/86400);
    time_left=time_left%86400;

    hours=Math.floor(time_left/3600);
    time_left=time_left%3600;

    mins=Math.floor(time_left/60);
    time_left=time_left%60;

    secs=Math.floor(time_left);             

    var daysTxt = \"<strong>\"+days +\"</strong>day\"+((days!=1)?\"s\":\"\");                       
    var hoursTxt  = \"<strong>\"+hours +\"</strong>hour\"+((hours!=1)?\"s\":\"\");
    var minTxt = \"<strong>\"+mins +\"</strong>min\"+((mins!=1)?\"s\":\"\");
    var secTxt = \"<strong>\"+secs +\"</strong>sec\";

    var finalTxt = daysTxt + \" : \" + hoursTxt+ \" : \" + minTxt + \" : \"+ secTxt;
    $(countdownDiv).html(finalTxt)

    setTimeout(\"initCountdown(\'\"+ countdownDiv +\"\',\'\"+ endDate +\"\',\'\"+ endMsg +\"\' )\",1000);
}else{
    $(countdownDiv).html(endMsg)
}

}

似乎除带有

setTimeout

的行以外的所有作品都可能在调用该函数时出错。 谁能告诉我错误在哪里？ 谢谢     

解决方法

您不能在字符串中传递countdownDiv或endDate。更换：

setTimeout(\"initCountdown(\'\"+ countdownDiv +\"\',\'\"+ endDate +\"\',\'\"+ endMsg +\"\' )\",1000);

与：

setTimeout(function(){initCountdown(countdownDiv,endDate,endMsg); countdownDiv = null; endDate = null; endMsg = null},1000);

设置为null是在某些浏览器中修复不良垃圾收集的肮脏技巧。     ,setTimeout将函数作为第一个参数。删除前导和尾随引号