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Prototype Enumerable include() Method
This method determines whether a given object is in the Enumerable or not, based on the == comparison operator. This is an alias of member() method.
If you need to check whether there is an element matching a given predicate, use any() method instead.
Syntax:
Iterator.include(object);
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Return Value :
- Returns true if finds 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>
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To understand it in better way you can Try it yourself.
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