Prototype - Enumerable map() Method


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This method returns the results of applying the iterator to each element. This method is aliased as collect() method.

Syntax

Iterator.map([context]);

Return Value

Returns the results of applying the iterator to each element

Example

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showResult() {
            alert( $R(1,5).collect(function(n) {return n * n;}) );
            // returns [1, 4, 9, 16, 25]
         }
      </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_enumerating.htm

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