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This method returns a string with the first count occurrences of pattern replaced by either a regular string, the returned value of a function or a Template string. pattern can be a string or a regular expression.
string.sub(pattern, replacement[, count = 1]); |
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ var fruits = 'apple pear orange'; alert("fruits.sub(' ', ', '):"+ fruits.sub(' ', ', ')); alert("fruits.sub(' ', ', ', 1): " + fruits.sub(' ', ', ', 1)); alert("fruits.sub(' ', ', ', 2): " + fruits.sub(' ', ', ', 2)); var str = fruits.sub(/\w+/, function(match){ return match[0].capitalize() + ','}, 2); alert(str); } </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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