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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.
Iterator.invoke(methodName[, arg...]); |
<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> |
To understand it in better way you can Try it yourself.
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