<html>
<head>
<style>
*{
margin: 0;
padding: 0;
}
#parent{
width: 500px; height: 500px;
margin: 100px auto;
background-color: red;
position: relative;
overflow: hidden;
}
#child{
width: 300px;
height: 300px;
background-color: green;
margin: 50px 90px;
}
</style>
</head>
<body>
<div id="parent">
<div id="child">
</div>
</div>
</body>
<script>
var get_child = document.getElementById("child");
console.log(get_child.offsetWidth); // offset 偏移量
console.log(get_child.offsetHeight);
console.log(get_child.offsetTop);
console.log(get_child.offsetLeft); // */
console.log(document.body.clientWidth); //用戶端可見寬度
console.log(document.body.clientHeight); //沒有邊線 用戶端可見高度
console.log(document.body.offsetWidth); //包括邊線 用戶端可見高度
console.log(document.body.offsetHeight); //包括邊線 用戶端可見高度
console.log(document.body.scrollHeight); //正文寬度
console.log(document.body.scrollWidth); //正文高度
console.log(document.body.scrollTop); //網頁被蜷曲的高度
console.log(document.body.scrollLeft); //網頁被卷曲的左側
console.log(window.screenTop);
console.log(window.screenLeft);
console.log(window.screen.width);
console.log(window.screen.height);
console.log(window.screen.availWidth);
console.log(window.screen.availHeight);
</script>
</html>
