Prototype - Enumerable pluck() Method

Quiz

This method is an optimization for a common use-case of collect() method. fetching the same property for all the elements.

Syntax

Iterator.pluck(propertyName);

Return Value

Returns the array of property values.

Example

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         function showResult() {
            var arr = ['world', 'this', 'is', 'nice'].pluck('length');
            
            alert("Test 1 : " + arr.inspect() );
            // Returns [5, 4, 2, 4]
         }
      </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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