# .removeProp()

Categories: Attributes | Manipulation > General Attributes

## .removeProp( propertyName ) Returns: jQuery

Description: Remove a property for the set of matched elements.

- #### version added: 1.6.removeProp( propertyName )

  propertyNameThe name of the property to set.

The `.removeProp()` method removes properties set by the `.prop()` method.

With some built-in properties of a DOM element or `window` object, browsers may generate an error if an attempt is made to remove the property. jQuery first assigns the value `undefined` to the property and ignores any error the browser generates. In general, it is only necessary to remove custom properties that have been set on an object, and not built-in (native) properties.

Note: Do not use this method to remove native properties such as checked, disabled, or selected. This will remove the property completely and, once removed, cannot be added again to element. Use `.prop()` to set these properties to `false` instead.

### Additional Notes:

- In Internet Explorer prior to version 9, using `.prop()` to set a DOM element property to anything other than a simple primitive value (number, string, or boolean) can cause memory leaks if the property is not removed (using `.removeProp()`) before the DOM element is removed from the document. To safely set values on DOM objects without memory leaks, use `.data()`.

### Example:

#### Set a numeric property on a paragraph and then remove it.

    <!DOCTYPE html>
    <html>
    <head>
      <style>
      img { padding:10px; }
      div { color:red; font-size:24px; }
    </style>
      <script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
    </head>
    <body>

      <p></p>

    <script>
    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")), ". ");

    </script>

    </body>
    </html>

#### Demo: