jQuery的。每個（）數組（）數組

Question

聽到一個對象數組

advancedParams = []; 
advancedParams["cost"] = []; 
advancedParams["cost"]["from"] = 10; 
advancedParams["cost"]["to"] = 100; 

但是。每個（）沒有看到第二陣列

$.each(advancedParams, function(idx, obj) { 
    console.log(idx); // shows cost 
    console.log(obj); // shows [from: "10", to: "200"] 
    $.each(obj, function(key, value) { 
     console.log(key); // nothing 
     //each have no iterations, why? 
    }); 
} 

Answer 1

這絕對是無效：

{cost: [from: "10"], [to: "200"]} 

因爲在一個數組中你不能將值與:分開。

而不是聲明一個數組[]你應該分配一個對象。

advancedParams = {}; 
advancedParams["cost"] = {}; 

請檢查下面的演示。

var advancedParams = {}; 
 
advancedParams["cost"] = {}; 
 
advancedParams["cost"]["from"] = 10; 
 
advancedParams["cost"]["to"] = 100; 
 

 
$.each(advancedParams, function(i, obj) { 
 
    console.log(obj); // results in "Object {from: 10, to: 100}" 
 
    $.each(obj, function(i, item) { 
 
    console.log(item); // results in "10, 100" 
 
    }); 
 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Answer 2

你的對象定義它是無效的。請看下面的錯誤消息：

儲存於這樣一個對象：var obj = { from: 10, to:200}。或者如果你想要一個對象數組，就像這樣做：var arr =[{from:10,to:200},{from:1, to:300}]。