📄 js_animation.asp@output=print
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<title>JavaScript Animation</title>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>JavaScript Animation</h1><a href="js_form_validation.asp"><img alt="previous" border="0" src="../images/btn_previous.gif" width="100" height="20" /></a>
<a href="js_image_maps.asp"><img alt="next" border="0" src="../images/btn_next.gif" width="100" height="20" /></a>
<hr />
<p class="intro">With JavaScript we can create animated images.</p>
<hr />
<h2>Examples</h2>
<p><a target="_blank" href="tryit.asp@filename=tryjs_animation">Button animation</a></p>
<hr />
<h2>JavaScript Animation</h2>
<p>It is possible to use JavaScript to create animated images.</p>
<p>The trick is to let a JavaScript change between different images on different
events.</p>
<p>In the following example we will add an image that should act as a link button on
a web page. We will then add an onMouseOver event and an onMouseOut event that will run
two JavaScript functions
that will change between the images.</p>
<hr />
<h2>The HTML Code</h2>
<p>The HTML code looks like this:</p>
<table class="ex" cellspacing="0" border="1" width="100%" id="table17"><tr><td>
<pre><a href="http://www.w3schools.com" target="_blank">
<img border="0" alt="Visit W3Schools!"
src="b_pink.gif" name="b1"
onmouseOver="mouseOver()"
onmouseOut="mouseOut()" />
</a></pre>
</td></tr></table>
<p>Note that we have given the image a name to make it possible for JavaScript
to address it later.</p>
<p>The onMouseOver event tells the browser that once a mouse is
rolled over the image, the browser should execute a function that will replace
the image with another image.</p>
<p>The onMouseOut event tells the browser that once a mouse is
rolled away from the image, another JavaScript function should be executed. This
function will insert the original image again.</p>
<hr />
<h2>The JavaScript Code</h2>
<p>The changing between the images is done with the following JavaScript:</p>
<table class="ex" cellspacing="0" border="1" width="100%" id="table15"><tr><td>
<pre><script type="text/javascript">
function mouseOver()
{
document.b1.src ="b_blue.gif";
}
function mouseOut()
{
document.b1.src ="b_pink.gif";
}
</script></pre>
</td></tr></table>
<p>The function mouseOver() causes the image to shift to "b_blue.gif".</p>
<p>The function mouseOut() causes the image to shift to "b_pink.gif".</p>
<hr />
<h2>The Entire Code</h2>
<table class="ex" cellspacing="0" border="1" width="100%" id="table16"><tr><td>
<pre><html>
<head>
<script type="text/javascript">
function mouseOver()
{
document.b1.src ="b_blue.gif";
}
function mouseOut()
{
document.b1.src ="b_pink.gif";
}
</script>
</head>
<body>
<a href="http://www.w3schools.com" target="_blank">
<img border="0" alt="Visit W3Schools!"
src="b_pink.gif" name="b1"
onmouseOver="mouseOver()"
onmouseOut="mouseOut()" />
</a>
</body>
</html></pre>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
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