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[英]How to give this an id Javascript using innerHTML changing image size?
[英]How to give transition effects to dynamically changing image backgrounds using JavaScript
我有一个页面,其中特定div的背景图像不断变化。 我想对图像提供一些过渡效果。 该页面在纯JavaScript上运行。 这是我的代码:
var bgArray = ["images/1.jpg", "images/2.jpg", "images/3.jpg"];
var i = 0;
function myFunction() {
setInterval(function() {
if (i == 3) {
i = 0;
}
var urlString = bgArray[i];
var x = document.getElementById("myDiv");
x.style.background = "url(" + bgArray[i] + ") no-repeat";
x.style.backgroundSize = "1366px";
i = i + 1;
}, 6000);
}
myFunction();
谢谢。
#myDiv {
transition: background 1s;
}
HTML代码
<div id = "myDiv"></div>
CSS代码
#myDiv{
width: <yourDivWidth>;
height: <yourDivHeight>;
background-size: cover;
}
JavaScript代码
var box = document.getElementById("myDiv");
var imagesList = ["url('images/1.jpg')", "url('images/2.jpg')", "url('images/3.jpg')"];
i = 0;
box.style.backgroundImage = imagesList[i];
function nextImg(){
box.style.backgroundImage = imagesList[i+1];
//box.style.width = "1366px";
//box.style.height = "1366px";
//declare your width and height of div in css and give background-size: cover;.
i = i+1;
if(i == imagesList.length){
i = 0;
box.style.backgroundImage = imagesList[i];
}
}
window.onload = setInterval(nextImg, 6000);
等待6秒钟,然后查看背景图像的变化。
如果您还想在前6秒设置背景图像,则可以在CSS中进行设置。
如果您有任何疑问,请发表评论。
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