Evaluating checkbox Selection

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JavaScript code to evaluate checkboxes selected by the user

<html>
  <head>
    <title>Evaluating Checkboxes </title>
      <script>

    function show() 
    {
        with (document.forms["frm1"]) 
        {
            if (c1.checked == true) 
            {
                alert("C");
            }
            if (o1.checked == true) 
            {
                alert("C++");
            }
            if (j1.checked == true) 
            {
                alert("JAVA");
            }
            if (p1.checked == true) 
            {
                alert("PHP");
            }
            if (s1.checked == true) 
            {
                alert("JAVASCRIPT");
            }
        }
    }
    
      </script>
  </head>
 <body>

  <form name="frm1" action="" method="post">

      <input type="checkbox" name="c1" value="c">C
      <br>

      <input type="checkbox" name="o1" value="oop">C++
      <br>

      <input type="checkbox" name="j1" value="java">JAVA
      <br>

      <input type="checkbox" name="p1" value="php">PHP
      <br>

      <input type="checkbox" name="s1" value="jscript">JAVASCRIPT
      <br>

      <input type="reset" name="r1" value="Show" onclick="show()">

  </form>        
</body>
</html>

Output:

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