Prototype Enumerable include() Method


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This method determines whether a given object is in the Enumerable or not, based on the == comparison operator. This is an alias of the member() method.

If you need to check whether there is an element matching a given predicate, use any() method instead.

Syntax

Iterator.include(object);

Return Value

  • Returns true if finds the given object, otherwise false.

Example

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

<script>

function showResult(){

  alert("$R(1,15).include(10) : " + $R(1,15).include(10) );
  // Returns true

  alert("['hello', 'world'] : " + $R(1,15).include('HELLO') );
  // Returns false

}

</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_enumerating.htm

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