這段代碼哪兒錯了，為什么沒有結果
??? var scoreStr = "小明:87;小花:81;小紅:97;小天:76;小張:74;小小:94;小西:90;小伍:76;小迪:64;小曼:76";
??? var myscore=scoreStr.split(";");
??? var sum=0;
??? if(var i = 0;i < myscore.length;i++){
??????? sum=sum+parseInt(myscore[i].slice(3,5));
??????? }
??? document.write(sum/myscore.length);
2016-08-15
?var sum = 0;
? for (var i = 0; i < scoreArr.length; i++) {
? ? ? sum = sum + parseInt(scoreArr[i].slice(3,5));
? }
? var avg=sum / scoreArr.length;
? document.write(parseInt(avg));
最后document.write(sum/myscore.length);出錯
改成var avg=sum / scoreArr.length;?document.write(parseInt(avg));
2016-08-15
中文是兩個字節，所以應該是sum=sum+parseInt(myscore[i].slice(5,7));