10.htm

来自「介绍了javascript的常用的函数」· HTM 代码 · 共 32 行

HTM
32
字号
<html>
<head>
<title>预先载入图片</title>
<script language="javascript">
<!--
	Img = new Array("pic1.jpg","pic2.jpg","pic3.jpg","pic4.jpg","pic5.jpg");
	size = Img.length;
	loadImg = new Array();
	for (i=0;i<size;i++){
		loadImg[i] = new Image();
		loadImg[i].src = Img[i];
	}
	i = 0;
	function nextImg(){
		i++;
		if (i>=size) i=0;
		picID.src = Img[i];
	}
	function preImg(){
		i--;
		if (i<=-1) i=size-1;
		picID.src = Img[i];
	}
//-->
</script>
</head>
<body>
<img src="pic1.jpg" id="picID"><br>
<input type="button" value="上一个" onClick="preImg()">
<input type="button" value="下一个" onClick="nextImg()">
</body>
</html>

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