Javascript For/In 循環： 循環遍歷對象的屬性
 
var person={fname:"John",lname:"Doe",age:25};  
for (x in person)   {  
   txt=txt + person[x]; 
}  

結果：JohnDoe25  

jQueryjQuery.each() 遍歷對象屬性

var arr = ["one", "two", "three", "four", "five"];  

var obj = { one: 1, two: 2, three: 3, four: 4, five: 5 };  

遍歷數組

var text = "Array ";  

jQuery.each(arr, function(i, val) {  

    text = text + " #Index:" + i + ":" + val;  

});  

console.log(text);  

//Array  #Index:0:one #Index:1:two #Index:2:three #Index:3:four #Index:4:five  

遍歷對象
text = "Object ";  
jQuery.each(obj, function(i, val) {  

    text = text + "Key:" + i + ", Value:" + val; 

});  

console.log(text);  

//Object Key:one, Value:1Key:two, Value:2Key:three, Value:3Key:four, Value:4Key:five, Value:5  

相信才會最好

總結

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