Javascript sort（）不适用于Chrome中超过10个对象的数组

While using sort() method in Javascript, I'm not able to correctly sort an array of more than 10 objects. This happens only in Google Chrome; with Firefox and IE it works.

在Javascript中使用sort()方法时,我无法正确排序超过10个对象的数组。这仅在Google Chrome中发生;使用Firefox和IE它可以工作。

I have an array of 11 objects with two properties, number and name; I'd like to order these object per number and then per name, but with Chrome it doesn't work.

我有一个11个对象的数组,有两个属性,数字和名称;我想为每个号码订购这些对象,然后按名称订购这些对象,但是对于Chrome,它不起作用。

This is the code of the whole page:

这是整个页面的代码:

<!DOCTYPE html>
<HTML>
<HEAD>
    <SCRIPT>
        var availableTags = [
            {number: 0,name:"Consigli"},
            {number: 0,name:"De sanctis"},
            {number: 0,name:"Perin"},
            {number: 1,name:"Bonucci"},
            {number: 2,name:"Essien"},
            {number: 2,name:"Florenzi"},
            {number: 2,name:"Hernanes"},
            {number: 2,name:"Martinho"},
            {number: 2,name:"Montolivo"},
            {number: 2,name:"Parolo"},
            {number: 2,name:"Perez"}
        ];

        function sortPlayers(a, b) {
            var result = (parseInt(a.number) > parseInt(b.number));
            if( (!result) && (parseInt(a.number) == parseInt(b.number)) ) {
                result = a.name.toLowerCase().localeCompare(b.name.toLowerCase());
            }
            return result;
        }

        function updateFormation() {
            availableTags.sort( sortPlayers );
            var html = "";
            for (var i = 0; i < availableTags.length; i++) {
                html += availableTags[i].number + " " + availableTags[i].name + "\n";
            }
            alert(html);
        }
    </SCRIPT>
</HEAD>
<BODY>
    <script type="text/javascript">
        updateFormation();
    </script>
</BODY>

At the following link: http://blog.rodneyrehm.de/archives/14-Sorting-Were-Doing-It-Wrong.html I read that "Chrome will sort arrays using InsertionSort if the array has 10 or less elements.": maybe this may help...

在以下链接:http://blog.rodneyrehm.de/archives/14-Sorting-Were-Doing-It-Wrong.html我读到“如果阵列有10个或更少的元素,Chrome将使用InsertionSort对数组进行排序。” :也许这可能会有所帮助......

Does anybody can help me?

有人可以帮帮我吗?

3 个解决方案

#1

Array.prototype.sort method expects the sort helper method to return three different types of values.

Array.prototype.sort方法期望sort helper方法返回三种不同类型的值。

1. Negative number - If the first element is smaller

2. Positive number - If the second element is smaller

3. Zero            - If both the elements are equal

So, your sortPlayers has to be tweaked a little, like this

所以,你的sortPlayers必须稍微调整一下,就像这样

function sortPlayers(a, b) {
    if (a.number === b.number) {
        return a.name.toLowerCase().localeCompare(b.name.toLowerCase());
    } else {
        return a.number > b.number ? 1 : -1;
    }
}

Since a.number and b.number are actually integers, you can straight away write like this

由于a.number和b.number实际上是整数,你可以像这样直接写

return a.number - b.number;

3 个解决方案

#1

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