<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
body{
background-image: url(123.jpg);
background-repeat: no-repeat;
}
</style>
</head>
<body>
<script>
function init(){
document.body.style.backgroundSize="100% "+document.documentElement.clientHeight+"px";
}
init();
window.onresize = function(){
init()
}
</script>
</body>
</html>
document.documentElement.clientHeight指的是浏览器的可见高度onresize是浏览器高度和宽度发生改变
时间： 2024-08-07 21:17:52