循环通过在JavaScript

Question

对象我有像

{ a: 2.078467321618, 
    b :13521.4, 
    c : 4503.9, 
    more...} 

的对象（在调试模式）

欲通过对象和独立的键和值的回路; 我该如何做到这一点？

Answer 1

做另一种方式是通过的foreach使其：

for (var key in obj) { 
    if (obj.hasOwnProperty(key)) { 
     // do something with the key and obj[key], which is val 
    } 
} 

注：这里我们检查，如果密钥属于我们的对象，而不是它的原型通过hasOwnProperty方法。

Answer 2

Object.keys(obj).forEach(function(key) { 
    var val = obj[key]; 
    ... 
}); 

Answer 3

Try the following: 

for(var key in object){ 
    var value = object[key]; 
    //now you have access to "key" and "value" 
} 

Answer 4

尝试这样的事情

for(var key in object){ 
    alert(key);// will give key 
    alert(object[key]);// will give value 
} 

Answer 5

这其实很简单：

for (var key in object) { 
    // do something with object[key] 
} 

Answer 6

试试这个

var sum = 0; 
var obj = {prop1: 5, prop2: 10, prop3: 15}; 

for each (var item in obj) 
{ 
sum += item; 
} 

结果的总和= 5 + 10 + 15

Answer 7

尝试以下代码：

var keys=Array(); 
var values = Array(); 

for (var key in obj) { 
//has own property is checked to bypass inherited properties like prototype  
if (obj.hasOwnProperty(key)) { 
    keys.push(key)'; 
    values.push(obj[key]); 

    } 
} 

//下面是分开键和值，做任何你想要使用jQuery与他们

console.log(keys); 
console.log(values); 

Answer 8

做：

var obj = { a: 2.078467321618, b :13521.4, c : 4503.9 }; 
var keyArr = []; 
var valArr = []; 

//iterate obj 
$.each(obj, function(k, v) { 
    //add items to the keyArr from obj's keys. 
    keyArr.push(k); 
    //add items to the varArr from obj's keys. 
    valArr.push(v); 
}); 

//show the result 
alert(keyArr); 
alert(valArr); 

看到演示： http://jsfiddle.net/bauangsta/KdZrA/