请帮忙检查3-20谢谢

来源：3-31 编程练习

qq_mysunshine_24

2018-03-20 22:26:09

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>首字母变大写</title>
</head>
<body>
<script>
    //补充代码

    function changeUpper(str){
    var arr=str.split(" ");
    var newArr=[];
    for(var i=0;i<arr.length;i++){
      newArr[i]=arr[i].charAt(0).toUpperCase()+arr[i].slice(1);

    }
    var newStr=newArr.join(" ");
    return newStr;
    }
     var str1="all time is no time when it is past";
    var upperstr1=changeUpper(str1);
    document.write(upperstr1);
</script>
</body>
</html>