Prototype - flatten() Method


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This method returns a flat (one-dimensional) version of the array. Nested arrays are recursively injected inline.

This can prove very useful when handling the results of a recursive collection algorithm.

Syntax

array.flatten();

Return Value

Returns a flat ( one - dimensional ) array.

Example

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showResult() {
            var arr =['frank',['bob','lisa'],['jill',['tom','sally']]];
            
            // Now flatten this array.
            var newArr = arr.flatten();
            
            newArr.each(function(item) {
               alert(item);
            });
         }
      </script>
   </head>

   <body>
      <p>Click the button to see the result.</p>
      <br />
      <br />
      <input type = "button" value = "Result" onclick = "showResult();"/>
   </body>
</html>

Output


prototype_array_processing.htm

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