排序复杂的JavaScript数组

Sort Complex JavaScript Array

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Possible Duplicate:
How to sort an array of javascript objects?

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我正在尝试将一些旧的actionscript 2.0代码转换为javascript。一切正常，但我无法按分数对数组进行数字排序。

在我最初使用的actionscript代码中：

1 2	// Sort the capitals array so that the capitals with the lowest score will be at the top capitalsList.sortOn("score", Array.NUMERIC);

这很好，但在JavaScript中不起作用。我把它改成：

1	capitalsList.sort("score", Array.NUMERIC);

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但是阿拉巴马州仍然输出(康涅狄格州应该输出，因为它的分数是-1)。我错过了什么？

我在js bin上的脚本：http://jsbin.com/ibitez/1/edit

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<!DOCTYPE html PUBLIC"-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
Untitled Document

window.onload = function() {

function capitalsConstructor(capitalName, stateName, score) {
this.capitalName = capitalName;
this.stateName = stateName;
this.score = score;
}

// Create state capitals array
var capitalsList = new Array();

// All 50 capitals are loaded into the array with a score of 0
// Sample limited to 10 capitals
capitalsList[0] = new capitalsConstructor("Montgomery","Alabama", 0);
capitalsList[1] = new capitalsConstructor("Juneau","Alaska", 0);
capitalsList[2] = new capitalsConstructor("Phoenix","Arizona", 0);
capitalsList[3] = new capitalsConstructor("Little Rock","Arkansas", 0);
capitalsList[4] = new capitalsConstructor("Sacramento","California", 0);
capitalsList[5] = new capitalsConstructor("Denver","Colorado", 0);
capitalsList[6] = new capitalsConstructor("Hartford","Connecticut", -1);
capitalsList[7] = new capitalsConstructor("Dover","Delaware", 0);
capitalsList[8] = new capitalsConstructor("Tallahassee","Florida", 0);
capitalsList[9] = new capitalsConstructor("Atlanta","Georgia", 0);

capitalsList.sort("score", Array.NUMERIC);

solution = capitalsList[0].stateName;

document.getElementById("divSolution").innerText = solution;
}

</head>

<body>

</body>
</html>

您必须提供对sort方法的回调：

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capitalsList = capitalsList.sort(function (a, b) {
return a.score - b.score;
});

这是小提琴：http://jsfiddle.net/g2cqg/