### 返回值:jQueryremoveProp(name)
### 概述
用來刪除由.prop()方法設置的屬性集
隨著一些內置屬性的DOM元素或window對象，如果試圖將刪除該屬性，瀏覽器可能會產生錯誤。jQuery第一次分配undefined值的屬性，而忽略了瀏覽器生成的任何錯誤
### 參數
#### **propertyName**String*V1.6*
要刪除的屬性名
### 示例
#### 描述:
設置一個段落數字屬性，然后將其刪除。
##### HTML 代碼:
~~~
<p> </p>
~~~
##### jQuery 代碼:
~~~
var $para = $("p");
$para.prop("luggageCode", 1234);
$para.append("The secret luggage code is: ", String($para.prop("luggageCode")), ". ");
$para.removeProp("luggageCode");
$para.append("Now the secret luggage code is: ", String($para.prop("luggageCode")), ". ");
~~~
##### 結果:
~~~
The secret luggage code is: 1234. Now the secret luggage code is: undefined.
~~~
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