variables

 
  <script>
    var items = new Array(3); 
    items[0] = 'one'; 
    items[1] = 1; 
    items[2] = foo; 
    // alerts 'one' 
    alert(items[0]); 
                  
    var list = { 'one', 1, foo }; 
    // alerts 1 
    alert(list[1]); 
  </script> 
      

 
  <script>
    // alerts "Press Me"
    alert(document.button.value);     
  </script>
    ...
  <pr>
    <input type="button" id="button" value="Press Me"/>
  </pr>
    

 
  <script>
    var test = false;
    // alerts 'false'
    if (test) { alert('true'); }
    else { alert('false'); } 
  </script> 
    

 
  <script>
    var theBody = document.body;
    document.removeNodeById('listNode');
    document.reset();
    document.textNode.text = 'new message';
    document.redraw();
    document.setFocus('buttonId');
    var theButton = document.getNodeById('buttonId');                   
  </script>
    

  <script>
    // fetch a new list and replace old list                 
    var updateForm = document.updateObj;
    var newList = updateForm.fetch();
    if (newList.startsWith('<list')) {
      document.removeNodeById('list');
      document.prNode.insertNodeAt(newList, 3);
    }
  </script>  
  
  <script>  
    // submit a form                   
    var formObj = document.formObj;
    formObj.lat.value = load('pos_lat');
    formObj.lng.value = load('pos_lng');
    formObj.submit();                    
  </script>    
    

  <script>
    var foo = 3;
    foo++;
    foo = (3 + 4) + (foo - (10 - 5));
  </script>    
    

  <script>
    // get list item with focus                  
    var sel = document.list.getFocus();
    // get the selected option 
    var list = document.list;
    var sel = 0;
    for (var i = 0; i < list.size(); i++) {
      if (list.isSelected(i)) { 
        sel = i; 
      } 
    }
    // set list focus to specified index
    document.list.setFocus(3);
    // sets the selected index of this choice group
    document.list.setSelected(3);
  </script>                 
    

<list id="alist" bgfocus="0xFF0000"> 
  <listitem> 
    <text>List Item 1</text> 
  </listitem> 
  <listitem> 
    <text>List Item 2</text> 
  </listitem> 
  <listitem> 
    <text>List Item 3</text> 
  </listitem> 
  <listitem> 
    <text>List Item 4</text> 
  </listitem>                     
</list>

                
<script>
  function changeList() { 
    // grab the list node 
    var aList = document.alist;  
    // change text in node with index 1 
    aList.nodeAt(1).nodeAt(0).text = 'New List Item 2'; 
    // insert new list item to bottom of list 
    aList.insertNode('<listitem><text>List Item 5<$/text><$/listitem>'); 
    // insert new list item to top of list 
    aList.insertNodeAt('<listitem><text>New List Item 1<$/text><$/listitem>', 0); 
    // remove 'List Item 3' 
    aList.removeNodeAt(3); 
    // must call document.reset() to alter DOM 
    document.reset(); 
    // set focus to bottom list item 
    aList.setFocus(4); 
  } 
</script> 

<list id="alist" bgfocus="0xFF0000"> 
  <listitem> 
    <text>New List Item 1</text> 
  </listitem> 
  <listitem> 
    <text>List Item 1</text> 
  </listitem> 
  <listitem> 
    <text>New List Item 2</text> 
  </listitem> 
  <listitem> 
    <text>List Item 4</text> 
  </listitem>  
  <listitem> 
    <text>List Item 5</text> 
  </listitem>                     
</list> 
                    
                    


    

<script>
  var aNullVal = null; 
  // alerts "it's null" 
  if (aNullVal == null) { alert("it's null"); } 
  else { alert("it's NOT null"); }  
</script> 
    

  <script>
    var hiString = 'hi'; 
    var thereString = "there"; 
    // alerts "the"; 
    alert(thereString.substring(0,3)); 
    // alerts '2' 
    alert(hiString.length()); 
    var hiThereString = hiString + ' ' + thereString; 
    // alerts 'i' 
    alert(hiThereString.charAt(1)); 
    // alerts '5' 
    alert(hiThereString.indexOf('e')); 
    // alerts 'true' 
    alert(hiThereString.startsWith('hi')); 
  </script> 

                    

    
  <script>
    // alerts "Some text to be displayed" 
    alert(document.someText.text); 
    document.someText.text = 'This is some different text'; 
    document.redraw(); 
  </script> 
   ... 
  <pr> 
    <text id="someText">Some text to be displayed</text> 
  </pr> 
    

  <script>
    // create a Thread to call a function every 10 secs 
    var t = new Thread('doSomething()', 10000); 
    t.start(); 
    // create a Thead to call a function every 20 secs and increment counter 
    var t2 = new Thread('doSomethingElse(); foo++', 20000); 
    t2.start(); 
    // stop Thread t; 
    t.stop(); 
    // clean up of Thread t2 is handled by Browser with a new page 
  </script>