<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
</body>
<script type="text/javascript">
/*
* */
window.onload = function(){
console.log(document.documentElement.clientWidth);
console.log(document.documentElement.clientHeight);
window.onresize = function(){
console.log(document.documentElement.clientWidth);
console.log(document.documentElement.clientHeight);
}
}
</script>
</html>
原文：https://www.cnblogs.com/beallaliu/p/9349070.html