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professional-javascript-14-ThrowExample.htm / htm



  <html>
      <head>
          <title>Try Catch Example</title>
          <script type="text/javascript">
          
                  function addTwoNumbers(a, b) {
                      if (arguments.length < 2) {
                          throw new Error("Two numbers are required.");
                      } else {
                          return a + b;
                      }
                  }
                  
                  try {
                      result = addTwoNumbers(90);
                  } catch (oException) {
                      alert(oException.message);      //outputs "Two numbers are required."
                  }
  
          </script>
      </head>
      <body>
      </body>
  </html>
  


(C) Æliens 20/2/2008

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