Prototype reduce() Method


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This method reduces arrays: one-element arrays are turned into their unique element, while multiple-element arrays are returned untouched.

Syntax

array.reduce()  ;

Return Value

  • If it is one-element array, then it turned into their unique element.
  • If it is multi-elements array, then it remains untouched.

Example

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

function showResult(){

   var arr = [10];
   alert("Reduced Element : "  + arr.reduce());
   var arr = [10, 20, 30, 40];
   alert("Reduced Element : "  + arr.reduce().inspect());
}

</script>
</head>

<body>

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

</body>
</html>

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


prototype_array_processing.htm

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