src code

class method Element.wrap 

Element.wrap(element, wrapper[, attributes]) → Element
  • wrapper (Element | String) – An element to wrap element inside, or else a string representing the tag name of an element to be created.
  • attributes (Object) – A set of attributes to apply to the wrapper element. Refer to the Element constructor for usage.

Wraps an element inside another, then returns the wrapper.

If the given element exists on the page, Element.wrap will wrap it in place — its position will remain the same.

The wrapper argument can be either an existing Element _or_ a string representing the tag name of an element to be created. The optional attributes argument can contain a list of attribute/value pairs that will be set on the wrapper using Element.writeAttribute.

Examples

Original HTML:

<table id="data">
  <tr>
    <th>Foo</th>
    <th>Bar</th>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
  </tr>
</table>

JavaScript:

// approach 1:
var div = new Element('div', { 'class': 'table-wrapper' });
$('data').wrap(div);
 // approach 2:
$('data').wrap('div', { 'class': 'table-wrapper' });
 // Both examples are equivalent &mdash; they return the DIV.

Resulting HTML:

<div class="table-wrapper">
  <table id="data">
    <tr>
      <th>Foo</th>
      <th>Bar</th>
    </tr>
    <tr>
      <td>1</td>
      <td>2</td>
    </tr>
  </table>
</div>
Warning

Using Element.wrap as an instance method (e.g., $('foo').wrap('p')) causes errors in Internet Explorer when used on textarea elements. The wrap property is reserved on textarea's as a proprietary extension to HTML. As a workaround, use the generic version instead (Element.wrap('foo', 'p')).

This method can be called either as an instance method or as a generic method. If calling as a generic, pass the instance in as the first argument.