Question

我试图找到数组中元素的总和我的意见是：1 2 3 4 5 输出应为：15 我收到的输出：012345

<html>
<head>
</head>
<body>
<script>
var numbers=[];
var sum=0;
for (var i=0;i<5;i++)
{
    numbers.push(prompt('Enter Your Numbers'));
    sum += numbers[i];
}
function getSumOfArray() {
    return  sum;
}
document.write("The Sum of Array: "+getSumOfArray()+"<br />");
</script>

</body>
</html>

Answer 1

通过调用parseFloat（）将字符串输入转换为数字应解决问题。

＆＃13;

<html>
<head>
</head>
<body>
<script>
var numbers = [];
var sum = 0;
for (var i = 0; i < 5; i++)
{
    numbers.push(parseFloat(prompt('Enter Your Numbers')));
    sum += numbers[i];
}
function getSumOfArray() {
    return sum;
}
document.write("The Sum of Array: " + getSumOfArray() + "<br />");
</script>

</body>
</html>

＆＃13;

Answer 2

RyanTheCoders的回答是正确的。但是，我会将输入与处理分开

<html>
<head>
</head>
<body>
<script>
     var count = 5;
     var numbers=[];
     var sum=0;

     //get inputs
     for (var i=0;i<count;i++)
     {
          numbers.push(parseInt(prompt('Enter Your Numbers')));
     }

     //calculate sum
     for (var x=0;x<count;x++)
     {
          sum += numbers[x];
     }

     function getSumOfArray() {
          return  sum;
     }

     document.write("The Sum of Array: "+getSumOfArray()+"<br />");
</script>
</body>
</html>

js中数组的总和

2 个答案: