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This method truncates a string to the given length and appends a suffix to it (indicating that it is only an excerpt).
If unspecified, the length parameter defaults to 30 and the suffix to "...".
string.truncate([length = 30[, suffix = '...']]) ; |
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ var str = 'A random sentence whose length exceeds 30 characters.'; alert("str.truncate() : " + str.truncate() ); alert("str.truncate( 10 ) : " + str.truncate(10) ); alert("str.truncate( 10, '...') : " + str.truncate(10, '...') ); } </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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