JavaScript数组对象排序未按预期工作

我的数组对象如下

 var data = [{"weight":0,"name":"New Arrivals"},{"weight":0,"name":"Weekly Promotions"},{"weight":0,"name":"Sale"},{"weight":0,"name":"Extended Size"},{"weight":0,"name":"Accessories and Shoes"},{"weight":0,"name":"Activewear"},{"weight":0,"name":"Disney Project"},{"weight":0,"name":"Dresses and Jumpsuits"},{"weight":0,"name":"Fleece"},{"weight":0,"name":"HEATTECH Collection"},{"weight":0,"name":"Ines de la Fressange"},{"weight":0,"name":"Intimates"},{"weight":0,"name":"Jeans"},{"weight":0,"name":"Loungewear"},{"weight":0,"name":"Outerwear and Blazers"},{"weight":0,"name":"Pants"},{"weight":0,"name":"Shirts and Blouses"},{"weight":0,"name":"Skirts"},{"weight":0,"name":"Socks and Hosiery"},{"weight":0,"name":"Sweaters"},{"weight":0,"name":"Sweatshirts and Sweatpants"},{"weight":0,"name":"T-Shirts and Tops"},{"weight":0,"name":"UT: Graphic Tees"},{"weight":0,"name":"Wear To Work"},{"weight":0,"name":"Mix and Match"}]

我试图根据属性权重对其进行排序，但如果权重的所有值都为0，我需要输出上的原始顺序。但是这个功能并没有像预期的那样工作，相反，顺序正在改变

使用了ramda和JavaScript排序

var sortedData = R.sortBy(R.prop('weight'), data);

或

两个案例的结果如下

var output = [{"weight":0,"name":"Jeans"},{"weight":0,"name":"New Arrivals"},{"weight":0,"name":"Sale"},{"weight":0,"name":"Extended Size"},{"weight":0,"name":"Accessories and Shoes"},{"weight":0,"name":"Activewear"},{"weight":0,"name":"Disney Project"},{"weight":0,"name":"Dresses and Jumpsuits"},{"weight":0,"name":"Fleece"},{"weight":0,"name":"HEATTECH Collection"},{"weight":0,"name":"Ines de la Fressange"},{"weight":0,"name":"Intimates"},{"weight":0,"name":"Weekly Promotions"},{"weight":0,"name":"Loungewear"},{"weight":0,"name":"Outerwear and Blazers"},{"weight":0,"name":"Pants"},{"weight":0,"name":"Shirts and Blouses"},{"weight":0,"name":"Skirts"},{"weight":0,"name":"Socks and Hosiery"},{"weight":0,"name":"Sweaters"},{"weight":0,"name":"Sweatshirts and Sweatpants"},{"weight":0,"name":"T-Shirts and Tops"},{"weight":0,"name":"UT: Graphic Tees"},{"weight":0,"name":"Wear To Work"},{"weight":0,"name":"Mix and Match"}]

预期：当所有案例的权重值为0时，我预期结果与输入相同

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非常感谢您的帮助。

您的问题是JavaScript中的排序不能保证稳定。ECMA-262规范规定：

此数组的元素已排序。排序不一定是稳定的（即，比较相等的元素不一定保持其原始顺序）

---

这个问题包括一个指向稳定排序的链接以及其他几个选项。

您的问题是JavaScript中的排序不能保证稳定。ECMA-262规范规定：

此数组的元素已排序。排序不一定是稳定的（即，比较相等的元素不一定保持其原始顺序）

---

这个问题包括一个指向稳定排序的链接以及其他几个选项。

最简单的解决方案是保存位置，然后在对象相等时进行比较：

var sortData = data.slice(0);

sortData.forEach(function(element, index){
    element.index = index;
});

sortData.sort(function(a,b) {
    var diff = a.weight - b.weight;
    return diff === 0 ? a.index - b.index : diff;
});

sortData.forEach(function(element){
    delete element.index;
});

---

最简单的解决方案是保存位置，然后在对象相等时进行比较：

var sortData = data.slice(0);

sortData.forEach(function(element, index){
    element.index = index;
});

sortData.sort(function(a,b) {
    var diff = a.weight - b.weight;
    return diff === 0 ? a.index - b.index : diff;
});

sortData.forEach(function(element){
    delete element.index;
});

---

您要查找的是名为

稳定性

的排序算法的属性。这意味着等值元素的顺序在排序后保持不变。不同的浏览器使用不同的排序算法，有些浏览器使用稳定算法，有些浏览器使用不稳定算法。您可以在此SO线程上看到浏览器之间的差异：

---

正如您在Ramda源代码中看到的，它使用内置的排序机制，因此如果使用Ramda，您会得到相同的结果：

您要查找的是名为

稳定性的排序算法的属性。这意味着等值元素的顺序在排序后保持不变。不同的浏览器使用不同的排序算法，有些浏览器使用稳定算法，有些浏览器使用不稳定算法。您可以在此SO线程上看到浏览器之间的差异：

正如您在Ramda源代码中看到的，它使用了内置的排序机制，因此如果使用Ramda，您会得到相同的结果：
A suggestion with。这里有索引，并使用第二个链式排序条件保留原始排序

mapped.sort(function (a, b) {
    return a.value - b.value || a.index - b.index;
});


//要排序的数组
var data=[{weight:0，name:“New Arrivals”}，{weight:0，name:“Weekly Promotions”}，{weight:0，name:“Extended Size”}，{weight:0，name:“Accessories and Shoes”}，{weight:0，name:“Activewear”}，{weight:0，name:“Disney Project”}，{weight:0，name:“连衣裙和连体衣”}，{weight:0，name:“Fleece”}，{weight:0，name:“Heartech Collection”}，{weight:0，name:“Ines de la Fressange”}，{weight:0，name:“Nemites”}，{weight:0，name:“Loungewear”}，{weight:0，name:“Outerwear and Blazers”}，{weight:0，name:“Pants”}，{weight:0，name:“Shirts”}，{weight:0，name:“裙子”}，{weight:0，name:“袜子和袜子”}，{weight:0，name:“毛衣”}，{weight:0，name:“运动衫和运动裤”}，{weight:0，name:“T恤和上衣”}，{weight:0，name:“UT:Graphic T恤”}，{weight:0，name:“上班穿”}，{weight:0，name:“混搭”}；
//临时数组保存具有位置和排序值的对象
var mapped=data.map（函数（el，i）{
返回{
索引:i,，
值：el.weight
};
});
//对包含缩减值的映射数组进行排序
映射.排序（函数（a，b）{
返回a.value-b.value | | a.index-b.index；
});
//用于生成订单的容器
var result=mapped.map（函数（el）{
返回数据[el.index]；
});
console.log（结果）；
.as控制台包装{max height:100%！important；top:0；}
建议。这里有索引，并使用第二个链式排序条件保留原始排序

mapped.sort(function (a, b) {
    return a.value - b.value || a.index - b.index;
});


//要排序的数组
var数据=[{weight:0，name:“New Arrivals”}，{weight:0，name:“Weekly Promotions”}，{weight:0，name:“Extended Size”}，{weight:0，name:“Accessories and Shoes”}，{weight:0，name:“Activewear”}，{weight:0，name:“Disney Project”}，{weight:0，name:“连衣裙和连体衣”}，{weight:0，name:：羊毛，{weight:0，name:“Heartech Collection”}，{weight:0，name:“Ines de la Fressange”}，{weight:0，name:“亲密者”}，{weight:0，name:“牛仔裤”}，{weight:0，name:“休闲装”}，{weight:0，name:“裤子”}，{weight:0，name:“衬衫和衬衫”}，{weight:0，name:“裙子”}，{weight:0，name:“袜子和袜子”}，{weight:0，name:“毛衣”}，{weight:0，name:“运动衫和运动裤”}，{weight:0，name:“T恤和上衣”}，{weight:0，name:“UT:Graphic T恤”}，{weight:0，name:“穿着上班”}，{weight:0，name:“混搭”}；
//临时数组保存具有位置和排序值的对象
var mapped=data.map（函数（el，i）{
返回{
索引:i,，
值：el.weight
};
});
//对包含缩减值的映射数组进行排序
映射.排序（函数（a，b）{
返回a.value-b.value | | a.index-b.index；
});
//用于生成订单的容器
var result=mapped.map（函数（el）{
返回数据[el.index]；
});
console.log（结果）；
作为控制台包装{max height:100%！important；top:0；}
您可以使用下划线的u.sortBy（数据，'weight'）进行稳定排序。
哟