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This method returns a new version of the array, without any null/undefined values.
array.compact() ; |
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ var oldArr =['Sam','Justin','Andrew','Dan', null, undefined]; alert("Guys in old Arr" ); oldArr.each(function(item) { alert(item ); }); var newArr = oldArr.compact(); alert("Guys in new Arr" ); newArr.each(function(item) { alert(item ); }); } </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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