Eyes following the mouse using Javascript

Submitted by jaredgwapo on Thursday, January 28, 2016 - 12:01.

Language

In this tutorial, I am going to teach you how to make a xavier eye or eyes following the eye using javascript. Just follow the instructions below.

Instructions

Writing our javascript code and name it as jseyes.js

/* jseyes.js
 
 
The classic Xeyes in JavaScript
(c) PROPIX Ltd,  Written by Pintér Gábor
Székesfehérvár, Kriványi u. 15.
H-8000, HUNGARY
Tel: +36 30 3489752
Fax: +36 22 304326
Email: [email protected]
Web: http://www.propix.hu
 
Revisions:
  V1.0  10/14/2001  Original release
                V1.1  02/20/2008: Updated by JavaScriptKit.com to work in the latest browsers (IE7, FF etc)
 
Usage:
  1. Include this file from the head of your page
  2. Define parameters or accept the defaults
  3. Insert the image
 
This script requires Internet Explorer 5+ or Nescape Navigator 6+! In other browsers it does nothing.
 
 
 
1. Include jseyes.js from the head of your page
Insert the following line into the head of your page:
  <script src="jseyes.js"></script>
 
 
2. Define parameters
You can accept the defaults or assign new values to these variables:
 
jseyesimg="jseyes.gif"
  The main image. Please do not edit.
 
jseyeimg="jseyeblue.gif"
  The image of the eye. Must be a 21x29 solid ellipse with transparent background.
 
 
4. Insert the image
Call jseyes() where you want to see the image:
  <script>
    jseyes();
  </script>
 
Or call jseyes(x, y) to show the image at absolute position:
  <script>
    jseyes(100,100);
  </script>
 
 
 
Example: http://www.propix.hu/www/jseyes/jseyes.html
 
*/
 
 
 
 
// Defaults
var jseyesimg="images/jseyes.gif";
var jseyeimg="images/jseyeblue.gif";
var jseyeslink="http://www.javascriptkit.com";
 
 
// Internal
var jseyeso=null, jseye1=null, jseye2=null;
var standardbody=(document.compatMode=="CSS1Compat")? document.documentElement : document.body //create reference to common "body" across doctypes
 
// General utils
 
// Find object by name or id
function jseyesobj(id) {
  var i, x;
  x= document[id];
  if (!x && document.getElementById) x= document.getElementById(id);
  for (i=0; !x && i<document.forms.length; i++) x= document.forms[i][id];
  return(x);
}
 
 
// Move eyes
function jseyesmove(x, y) {
  var ex, ey, dx, dy;
  if (jseyeso && jseye1 && jseye2 && jseyeso.style) {
    ex=jseyeso.offsetLeft+46; ey=jseyeso.offsetTop+58;
    dx=x-ex; dy=y-ey;
    r=(dx*dx/49+dy*dy/289<1) ? 1 : Math.sqrt(49*289/(dx*dx*289+dy*dy*49));
    jseye1.style.left= r*dx+36.5+'px'; jseye1.style.top= r*dy+44+'px';
    ex+=56; dx-=56;
    r=(dx*dx/49+dy*dy/289<1) ? 1 : Math.sqrt(49*289/(dx*dx*289+dy*dy*49));
    jseye2.style.left= r*dx+92.5+'px'; jseye2.style.top= r*dy+44+'px';
  }
}
 
 
 
// Main
function jseyes() {
  var img;
  var x, y, a=false;
 
  if (arguments.length==2) {
    x= arguments[0];
    y= arguments[1];
    a= true;
  }
 
    img= "<div id='jseyeslayer' style='position:"+
           (a ? "absolute; left:"+x+"; top:"+y : "relative")+
           "; z-index:5; width:150; height:150 overflow:hidden'>"+
             "<div id='jseye1' style='position:absolute; left:36; top:44; z-index:6; width:21; height:29'>"+
               "<img src='"+jseyeimg+"' width=21 height=29 onClick=\"location.href='"+jseyeslink+"'\">"+
             "</div>"+
             "<div id='jseye2' style='position:absolute; left:92; top:44; z-index:6; width:21; height:29'>"+
               "<img src='"+jseyeimg+"' width=21 height=29 onClick=\"location.href='"+jseyeslink+"'\">"+
             "</div>"+
             "<img src='"+jseyesimg+"' width=150 height=150 onClick=\"location.href='"+jseyeslink+"'\">"+
         "</div>";
    document.write(img);
    jseyeso=jseyesobj('jseyeslayer');
    jseye1=jseyesobj('jseye1');
    jseye2=jseyesobj('jseye2');
 
    document.onmousemove=jseyesmousemove;
}
 
 
// Mouse move events
 
function jseyesmousemove(e) {
                var mousex=(e)? e.pageX : event.clientX+standardbody.scrollLeft
                var mousey=(e)? e.pageY : event.clientY+standardbody.scrollTop
  jseyesmove(mousex, mousey);
  //return(false);
}

Writing our html code

Note: Don't forget to link the javascript code named jseyes.js inside the head tag.

<!DOCTYPE html>
<head>
 
<title>
Xavier Eye
</title>
 
<style type="text/css">
#styl {
        float: left;
    margin-left: 580px;
    margin-top: 200px;
}
</style>
 
<script src="js/jseyes.js"></script>
 
</head>
 
<body>
 
 
<div id="styl">
<p>
Move the cursor around into the<br /> image to see what the effect.
</p>
<script>
    jseyes();
</script>
</div>
 
</body>
 
</html>

Congratulations, you have finally created xavier eyes or eyes following mouse that you can use in your systems or projects. For comment and suggestions, feel free to comment below or email me at [email protected]

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.

Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.

FOR YOUR OWN SAFETY, PLEASE:

1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.

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