• 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

We use DIV elements to display results of Web services. Once a result is ready, we update the innerHTML property of the appropriate element. Here is how we update the result of the add Web service:

  function addResult(result) {
    theResult1.innerHTML = result.value;
  }

  function isPrimeNumberResult(result) {
    theResult2.innerHTML = "The number " + testValue.value + 
      (result.value ? " is" : " is not") + " a prime number";
  }

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