查看图片(前进后退)功能实现js代码

时间:2020-05-13 人气:0

注：images文件夹下图片的命名是从1~5.jpg有规律的
声明的 var array = [1, 2, 3, 4, 5]; 这个数组存放的是图片的名称

<head>
<title></title>
<script src="Jquery1.7.js" type="text/javascript"></script>
<style type="text/css">
img
{
width: 200px;
height: 200px;
}
</style>
<script type="text/javascript">
$(function () {
var array = [1, 2, 3, 4, 5];
var count = 0;
$('#Button1').click(function () {
if (count > 0) {
count--;
$('img').attr('src','images/'+array[count]+'.jpg');
}
})
$('#Button2').click(function () {
if (count <4) {
count++;
$('img').attr('src', 'images/' + array[count] + '.jpg');
}
})
})
</script>
</head>
<body>
<table>
<tr>
<td>
<input id="Button1" type="button" value="<" />
</td>
<td>
<img src="images/1.jpg" />
</td>
<td>
<input id="Button2" type="button" value=">" />
</td>
</tr>
</table>
</body>

复制代码代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<style type="text/css">
#mydiv
{
position: absolute;
width: 500px;
height: 400px;
top: 50%;
left: 50%;
margin-top: -200px;
margin-left: -290px;
}
img
{
width: 480px;
height: 380px;
}
</style>
<script src="Jquery1.7.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
//第一种方法
/*
$('#btn1').toggle(function () { $('img').attr('src', 'images/1.jpg'); },
function () { $('img').attr('src', 'images/2.jpg'); },
function () { $('img').attr('src', 'images/3.jpg'); },
function () { $('img').attr('src', 'images/4.jpg'); },
function () { $('img').attr('src', 'images/5.jpg'); });

$('#btn2').toggle(function () { $('img').attr('src', 'images/5.jpg'); },
function () { $('img').attr('src', 'images/4.jpg'); },
function () { $('img').attr('src', 'images/3.jpg'); },
function () { $('img').attr('src', 'images/2.jpg'); },
function () { $('img').attr('src', 'images/1.jpg'); });
*/

//第二种方法

var array = [1, 2, 3, 4, 5, 6];
var count = 0;
//后退
$('#btn1').click(function () {
if (count > 0) {
count--;
$('img').attr('src', 'images/' + array[count] + '.jpg');
}
})
//前进
$('#btn2').click(function () {
if (count < 5) {
count++;
$('img').attr('src', 'images/' + array[count] + '.jpg');
}
})

})
</script>
</head>
<body>
<div id="mydiv">
<table>
<tr>
<td>
<input id="btn1" type="button" value="<" />
</td>
<td>
<img src="images/1.jpg" />
</td>
<td>
<input id="btn2" type="button" value=">" />
</td>
</tr>
</table>
</div>
</body>
</html>

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