Prototype - Event pointerY() Method


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This method returns the absolute vertical position for a mouse event.

Syntax

Event.pointerY(event);

Return Value

Returns the absolute vertical position for a mouse event.

Example

Try this example by clicking at different places.

<html>
   <head>
      <title>Prototype examples</title>
      <script type = "text/javascript" src = "/javascript/prototype.js"></script>
      
      <script>
         // Register event 'click' and associated call back.
         Event.observe(document, 'click', respondToClick);
  
         // Callback function to handle the event.
         function respondToClick(event) {
            var x_axis = Event.pointerY(event);
            alert("Vertical position : "  + x_axis);
         }
      </script>
   </head>

   <body>
      <p id = "note">Click anywhere to see the result.</p>
      <p id = "para1">This is paragraph 1</p>
      <p id = "para2">This is paragraph 2</p>
      <div id = "division">This is divsion.</div>
   </body>
</html>

Output


prototype_event_handling.htm

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