3回答

• 

  disabled

  2017-03-27 10:06:25

    var myarr = scoreStr.split(':');

    var mynum = 0;

    for (i=myarr.length-1;i>0;i--){

        mynum += parseInt(myarr[i]);

    }

    document.write(mynum);

  
  

  0 0
• 

  好生气哦

  2017-03-10 10:35:27

      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 a=scoreStr.split(";");

      

      var sum=0;

      for(var i=0;i<10;i++){

          var s=a[i].split(":");

          sum+=parseInt(s[1]);

      }

      document.write("班级总分为:"+sum);

  
  

  0 1
• 

  慕斯5209270

  2017-03-10 09:38:21

  var thisDate = new Date();

  
  

  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 arr = new Array();

  arr = scoreStr.split(";");

  
  

  var Socre = 0;//总分

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

  arr[i] = arr[i].substring(arr[i].indexOf(":")+ 1) * 1;

  
  

  Socre = Socre + arr[i];

  }

  
  

  var average = Math.round(Socre / arr.length);

  
  

  document.write(thisDate.getFullYear() + "年" + (thisDate.getMonth() + 1) +"月" + thisDate.getDate() + "日" +"  星期" + thisDate.getDay() +"--班级平均分为：" + average);

  
  

  0 1