添加两个json对象并进行排序

Question

我有三个类似的json对象。现在，我希望加入整个列表，然后根据索引之一对完整的列表进行排序。在这里，对象描述

对象1

[{"link":"#","prod":"Fundamentals Of Software Engineering","price":" Rs. 200 "},{"link":"##","prod":"Real-Time Systems: Theory And Practice","price":" Rs. 394 "}]

对象2

[{"link":"#","prod":"Fundamentals Of Software Engineering","price":" Rs. 200 "},{"link":"##","prod":"Real-Time Systems: Theory And Practice","price":" Rs. 394 "}] 

对象3

[{"link":"#","prod":"Fundamentals Of Software Engineering","price":" Rs. 200 "},{"link":"##","prod":"Real-Time Systems: Theory And Practice","price":" Rs. 394 "}] 

一旦我加入其中，我希望将完整的数组(新的) w.r.t排序到价格指数。

如有任何提示，我们将不胜感激。谢谢:)

Answer 1

如果Object1、Object2和Object3是JSON字符串，则使用eval函数将其转换为Javascript对象。

然后使用concat方法合并它们。http://www.w3schools.com/jsref/jsref_concat_array.asp

var mergedArray = arr1.concat(arr2, arr3);

然后在Javascript中使用sort方法进行排序。参考文献：http://www.w3schools.com/jsref/jsref_sort.asp参考：https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/sort

var sorted = mergedArray.sort(function(a, b){

    // This function is used by sort method for sorting process
    // This function gets called with parameters a,b which are the elements in array (here product objects from your JSON)
    // if this function returns value < 0 a is placed before b
    // if this function returns 0 nothing is changed
    // if this function returns value > 0 b is placed before a
    // a.price.replace("Rs.", "") removes Rs. from price string. so "Rs. 200" becomes 200
    // parseFloat(a.price.replace("Rs.", "")) makes it number.  "200" becomes 200. "200.50" becomes 200.5
    // priceA - priceB returns -ve value if priceA < priceB, 0 if priceA = priceB, +ve value if priceA > priceB.

    var priceA = parseFloat(a.price.replace("Rs.", ""));
    var priceB = parseFloat(b.price.replace("Rs.", ""));
    return priceA - priceB;



});

使用return priceB - priceA;进行降序。小提琴手：http://jsfiddle.net/diode/FzzHz/

。

Answer 2

将它们转换为object，this应该能做到这一点

Answer 3

可以使用concat方法连接数组：

var result = arr1.concat(arr2, arr3);

然后，您可以对结果数组进行排序。

让我们编写使用prod属性对它们进行排序的排序函数(您可以根据您希望的任何属性对它们进行排序)：

function SortByProd(a, b) {
    var aProd = a.prod.toLowerCase();
    var bProd = b.prod.toLowerCase(); 
    return ((aProd < bProd) ? -1 : ((aProd > bProd) ? 1 : 0));
}

然后分类：

result.sort(SortByProd);