tryit_view.asp@filename=trydhtml_array_next
来自「W3Schools tutorial..web designing」· ASP@FILENAME=TRYDHTML_ARRAY_NEXT 代码 · 共 58 行
ASP@FILENAME=TRYDHTML_ARRAY_NEXT
58 行
<html>
<head>
<script type="text/javascript">
myImages=new Array();
myImages[0]="w3schools.gif";
myImages[1]="bulbon.gif";
myImages[2]="landscape.jpg";
myImages[3]="w3schools.gif";
myImages[4]="bulboff.gif";
myImages[5]="smiley.gif";
imagecounter=myImages.length-1;
i=0;
function first()
{
document.getElementById('imageviewer').src=myImages[0];
i=0;
}
function previous()
{
if (i>0)
{
i--;
document.getElementById('imageviewer').src=myImages[i];
}
}
function next()
{
if (i<imagecounter)
{
i++;
document.getElementById('imageviewer').src=myImages[i];
}
}
function last()
{
document.getElementById('imageviewer').src=myImages[imagecounter];
i=imagecounter;
}
</script>
</head>
<body>
<center>
<form>
<input type="button" value="First" onclick="first()">
<input type="button" value="Previous" onclick="previous()">
<input type="button" value="Next" onclick="next()">
<input type="button" value="Last" onclick="last()">
</form>
<img id="imageviewer" src="w3schools.gif" alt="w3Scools" width="100" height="30" />
</center>
</body>
</html>
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