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JS示例30-列表排序sort

JS示例30-列表排序sort

作者: 微小码 | 来源:发表于2019-04-03 12:28 被阅读0次
<!DOCTYPE >
<html>

    <head>
        <title></title>
        <meta charset="utf-8">
        <script>
            window.onload = function() {
                var oBtn = document.getElementById('order');
                oBtn.onclick = function() {
                    var oUL = document.getElementById('ul1');
                    var oLi = oUL.getElementsByTagName('li');
                    var arr = [];
                    for(var i = 0; i < oLi.length; i++) {
                        arr[i] = oLi[i];
                    }
                    arr.sort(function(l1, l2) {
                        var n1 = parseInt(l1.innerHTML);
                        var n2 = parseInt(l2.innerHTML);
                        return n1 - n2;
                    })
                    for(var i = 0; i < oLi.length; i++) {
                        oUL.appendChild(arr[i]);
                    }
                }

            }
        </script>
    </head>

    <body>
        <input type="button" name="order" id="order" value="排序" />

        <ul id="ul1">
            <li>2</li>
            <li>4</li>
            <li>5</li>
            <li>1</li>
            <li>3</li>
            <li>6</li>
        </ul>
    </body>

</html>
image.png

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