js数组sort方法 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
    var products = [ { name: "Grapefruit", calories: 170, color: "red", sold: 8200 },
                     { name: "Orange", calories: 160, color: "orange", sold: 12101 },
                     { name: "Cola", calories: 210, color: "caramel", sold: 25412 },
                     { name: "Diet Cola", calories: 0, color: "caramel", sold: 43922 },
                     { name: "Lemon", calories: 200, color: "clear", sold: 14983 },
                     { name: "Raspberry", calories: 180, color: "pink", sold: 9427 },
                     { name: "Root Beer", calories: 200, color: "caramel", sold: 9909 },
                     { name: "Water", calories: 0, color: "clear", sold: 62123 }
                   ];

    function compareSold(colaA, colaB){
        if (colaA.sold > colaB.sold){
            return 1;
        } else if (colaA.sold === colaB.sold){
            return 0;
        } else {
            return -1
        }
    }

    products.sort(compareSold);
    console.log(products);
    //传递给sort比较函数需要根据比较结果返回
    //    如果第一项>第二项，返回大于0
    //    如果第一项=第二项， 返回0
    //    反之，返回小于0

    </script>
</head>
<body>

</body>
</html>

 

posted @ 2018-07-23 08:31  道高一尺  阅读(168)  评论(0)  编辑  收藏  举报