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Prototype Enumerable invoke() Method
This method is an optimization for a common use-case of each() or collect() method. Invoking the same method, with the same potential arguments, for all the elements.
Syntax:
Iterator.invoke(methodName[, arg...]);
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Return Value :
- Returns the results of the method calls.
Example:
<html>
<head>
<title>Prototype examples</title>
<script type="text/javascript"
src="/javascript/prototype.js">
</script>
<script>
function showResult(){
alert(['hello', 'world', 'cool!'].invoke('toUpperCase') );
// Returns ['HELLO', 'WORLD', 'COOL!'];
alert(['hello', 'world', 'cool!'].invoke('substring', 0, 3));
// Returns ['hel', 'wor', 'coo']
}
</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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