### 返回值:jQueryremoveProp(name)
### 概述
用来删除由.prop()方法设置的属性集
随着一些内置属性的DOM元素或window对象，如果试图将删除该属性，浏览器可能会产生错误。jQuery第一次分配undefined值的属性，而忽略了浏览器生成的任何错误
### 参数
#### **propertyName**String*V1.6*
要删除的属性名
### 示例
#### 描述:
设置一个段落数字属性，然后将其删除。
##### HTML 代码:
~~~
<p> </p>
~~~
##### jQuery 代码:
~~~
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")), ". ");
~~~
##### 结果:
~~~
The secret luggage code is: 1234. Now the secret luggage code is: undefined.
~~~
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