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This method checks if the string is 'blank', meaning either empty or containing only whitespace.
string.blank(); |
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ var str = ''; alert("''.blank() : " + str.blank() ); str = ' '; alert("' '.blank() : " + str.blank() ); str = 'a'; alert("a.blank() : " + str.blank() ); } </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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