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# Prototype empty() Method

This method tests whether element is empty (i.e. contains only whitespace).

## Syntax:

    element.empty;

## Return Value:

- If it finds that element is an empty one then it returns true otherwise false

## Example:

    <html>
    <head>
    <title>Prototype examples</title>
    <script type="text/javascript"
       src="/javascript/prototype.js">
    </script>
    <script>

    function showResult(){
       if($('wallet').empty() ){
           alert( "Wallet is empty " );
       }
       if($('cart').empty() ){
           alert( "Cart is full" );
       }
    }
    </script>
    </head>

    <body>

       <p>Click the button to see the result.</p>

       <div id="wallet">     </div>
       <div id="cart">full!</div>

       <br />
       <input type="button" value="showResult"
                 onclick="showResult();"/>

    </body>
    </html>

In this example:

    $('wallet').empty();
    // -> true
    $('cart').empty();
    // -> false

To understand it in better way you can Try it yourself.

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