• The init() function assigns a short name to the Web service URL
• A function to call the Web service with the appropriate parameters
• A function to display the results

For our add Web service, the function addNumbers() is invoked when the Add button is clicked. It calls the webservice behavior's callService() method. The parameters are: (i) the function that handles the result display, (ii) the Web service command, "add", (iii) the first number, and (iv) the second number:

  function addNumbers(a, b) {
    myWebService.simpleCalcWebService.callService(addResult, 
      "add", first.value, second.value);
  }

  function isPrimeNumber() {
    myWebService.isPrimeNumberWebService.callService(isPrimeNumberResult, 
      "IsPrime", 
      testValue.value);
  }

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