Question

大家晚上好！任何人都知道如何从数组中提取前5个数字（最高）？我有一个带有姓名，姓氏和分数的XML，并希望提取前5个来创建图表。至于现在，我以这种方式得到所有信息：

num = xmlData.childNodes.length;
    for (var i = 0; i <= num - 1; i++)
    {
        names[i] = this.childNodes[i].childNodes[6].firstChild.nodeValue;
        surnames[i] = this.childNodes[i].childNodes[5].firstChild.nodeValue;
        points[i] = this.childNodes[i].childNodes[0].firstChild.nodeValue;
        pointsint[i] = parseInt(speeds[i]);
        trace(i + "." + pointsint[i] + " (" + names[i] + " " + surnames[i] + ")");
    }

感谢您的帮助！

Answer 1

将数据组织为通用对象条目和 Array.sortOn（...）（http://help.adobe.com/en_US/as2/reference/flashlite/WS5b3ccc516d4fbf351e63e3d118ccf9c47f-7ea5.html）。我没有测试它，但我认为这个想法很清楚：

var num = xmlData.childNodes.length;
var entries = [];

for (var i = 0; i <= num - 1; i++)
{
    var anEntry = {};
    var aNode = xmlData.childNodes[i];

    anEntry['name'] = aNode.childNodes[6].firstChild.nodeValue;
    anEntry['surname'] = aNode.childNodes[5].firstChild.nodeValue;

    var aSpeed = aNode.childNodes[0].firstChild.nodeValue;
    anEntry['speed'] = parseInt(aSpeed);

    entries.push(anEntry);

    trace(i + "." + anEntry['speed'] + " (" + anEntry['name'] + " " + anEntry['surname'] + ")");
}

entries.sortOn("speed", Array.DESCENDING | Array.NUMERIC);
// Now first five elements of entries Array is what you want.

AS2从数组中提取前5位

1 个答案: