我有一个代码来循环图像但基于Img源,但是如何改进它以使其适用于" background-image" div的财产?
HTML
<div id="section2"></div>
CSS
#section2 {
background-image: 'url(..images/banner1.jpg');
}
JAVASCRIPT
<script type = "text/javascript">
(function() {
var i = 1;
var pics = [ "images/banner1.jpg", "images/banner2.jpg", "images/banner3.jpg" ];
var el = document.getElementById('section2');
function toggle() {
el.src = pics[i];
i = (i + 1) % pics.length;
}
setInterval(toggle, 3000);
})();
</script>
提前致谢:)
答案 0 :(得分:1)
一种方法是使用CSS类而不是源代码。
<强> JS:强>
<script type = "text/javascript">
(function() {
var i = 1;
var classes = [ "bgd-1", "bgd-2", "bgd-3" ]; // adjusted
var el = document.getElementById('section2');
function toggle() {
el.className = classes[i]; // adjusted
i = (i + 1) % classes.length; // adjusted
}
setInterval(toggle, 3000);
})();
</script>
<强> CSS:强>
#section2.bgd-1 {
background-image: url('..images/banner1.jpg');
}
#section2.bgd-2 {
background-image: url('..images/banner2.jpg');
}
#section2.bgd-3 {
background-image: url('..images/banner3.jpg');
}
注意:
使用el.className += ' ' + classes[i];
附加类名而不是替换所有元素类。