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源自:7-23 编程练习

哪位大哥帮帮看看哪里出错了,显示不出来

<!DOCTYPE  HTML>

<html >

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>系好安全带,准备启航</title>


<script type="text/javascript">


  //通过javascript的日期对象来得到当前的日期,并输出。

var mydate = new Date();

var weekday = ["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]

  var scoreStr = "小明:87;小花:81;小红:97;小天:76;小张:74;小小:94;小西:90;小伍:76;小迪:64;小曼:76";

  var a1 = screStr.split(";");

 var sum = 0;

 for(var i = 0,i < a1.length,i++){

     sum += parseInt(a1.substr(3))

 }

document.write(mydate.getFullYear() + "年" + (mydate.getMonth()+1) + "月" + mydate.getDate() + "日" + " " + weekday[mydate.getDay()] + "--班级总分为:" + sum)  


</script>

</head>

<body>

</body>

</html>


提问者:qq_傻傻分不清_51 2018-09-18 17:35

个回答

  • 慕容8310470
    2018-09-19 11:50:50
    已采纳

    无视我上面的言论,给你看了下,1:for(里面的符号是;不是,)  2: a1.substr(3)是什么东西不知道
    下面是我给你改的 看看吧

    <!DOCTYPE  HTML>


    <html >


    <head>


    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />


    <title>系好安全带,准备启航</title>




    <script type="text/javascript">




    //通过javascript的日期对象来得到当前的日期,并输出。


    var mydate = new Date();


    var weekday = ["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]


    var scoreStr = "小明:87;小花:81;小红:97;小天:76;小张:74;小小:94;小西:90;小伍:76;小迪:64;小曼:76";


    var a1 = scoreStr.split(";");

    console.log('a1: ', a1)

    var sum = 0;

    for(var i = 0;i< a1.length;i++){

    sum += parseInt(a1[i].split(":")[1])

    }

    sum= sum / a1.length


    document.write(mydate.getFullYear() + "年" + (mydate.getMonth()+1) + "月" + mydate.getDate() + "日" + " " + weekday[mydate.getDay()] + "--班级总分为:" + sum)




    </script>


    </head>


    <body>


    </body>


    </html>




  • 慕容8310470
    2018-09-19 11:30:59

    写在head里了  放到body  

  • GodV
    2018-09-18 21:24:39

    是scoreStr 不是screStr 。。。