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This method checks if the string is valid JSON by the use of regular expressions. This security method is called internally.
string.isJSON(); |
<html> <head> <title>Prototype examples</title> <script type="text/javascript" src="/javascript/prototype.js"> </script> <script> function showResult(){ var str = "something"; alert("something.isJSON() : " + str.isJSON()); var str = "\"something\""; alert("\"something\" : " + str.isJSON()); var str = "{ foo: 42 }"; alert("{ foo: 42 } : " + str.isJSON()); var str = "{ \"foo\": 42 }"; alert("{ \"foo\": 42 } : " + str.isJSON()); } </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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