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javascript 實現1加到100

js簡單的迴圈實現

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>

        var sum=0;
        for (var i=0;i<101;i++){
            sum+=i
        }
        console.log(sum);

        var item=0;
        var all=0;
        while (item<101){
            all +=item;
            item++;
        }
        console.log(all);
    </script>
</head>
<body>
11111
</body>
</html>