获得各种宽高的属性还有公式
body {
padding: 50px;
height: 500px;
border: 1px dotted red;
overflow: scroll;
}
span {
color: blue;
}
<body onscroll="body_scroll()">
<div>网页可见区域高document.body.clientHeight=height + padding * 2- 滚动条宽度<span id="span_client_height">测试的文字12</span></div>
<div>网页可见区域宽document.body.clientWidth=width + padding * 2- 滚动条宽度<span id="span_client_width">测试的文字12</span></div>
<div>body的总高度document.body.offsetHeight= height+border*2+padding*2 = clientHeight + 滚动条宽度 + 边框宽度*2<span id="span_client_offsetHeight">测试的文字12</span></div>
<div>body的总宽度document.body.offsetWidth= width+border*2+padding*2 = clientWidth + 滚动条宽度 + 边框宽度*2<span id="span_client_offsetWidth">测试的文字12</span></div>
scrollHeight的MDN解释：元素内容高度的度量，包括由于溢出导致的视图中不可见内容
<div>滚动总高度document.body.scrollHeight<span id="span_client_scrollHeight">测试的文字12</span></div>
<div>滚动的高度document.body.scrollTop<span id="span_client_scrollTop">测试的文字12</span></div>
<div>滚动总宽度document.body.scrollWidth<span id="span_client_scrollWidth">测试的文字12</span></div>
<div>浏览器可视窗口的高度，不包括边框、工具栏、调试窗口（可变）window.innerHeight<span id="span_inner_height">测试的文字12</span></div>
<div>浏览器可视窗口的宽度，不包括边框（可变）window.innerWidth<span id="span_inner_width">测试的文字12</span></div>
<div>浏览器窗口的宽度，包括滚动条和边框（可变）window.outerHeight<span id="span_outer_height">测试的文字12</span></div>
<div>浏览器窗口的高度，包括边框、工具栏（可变）window.outerWidth<span id="span_outer_width">测试的文字12</span></div>
<div>屏幕物理分辨率高（不变）window.screen.height=window.screen.availHeight+windows上下任务栏<span id="span_screen_height">测试的文字12</span></div>
<div>屏幕物理分辨率宽（不变）window.screen.width=window.screen.availHeight+windows左右任务栏<span id="span_screen_width">测试的文字12</span></div>
<div>浏览器窗口的可用高度，不包括windows任务栏（可变）window.screen.availHeight<span id="span_screen_availHeight">测试的文字12</span></div>
<div>浏览器窗口的可用宽度，不包括windows任务栏（可变）window.screen.availWidth<span id="span_screen_availWidth">测试的文字12</span></div>
<div>浏览器窗口距离显示屏上部高度（可变） window.screenTop<span id="span_window_top">测试的文字12</span></div>
<div>浏览器窗口距离显示屏下部高度（可变） window.screenLeft<span id="span_window_left">测试的文字12</span></div>
</body>
现在我们来动态监视它们的变化
添加各种监听事件来监听当浏览器大小发生改变时各种数据的变化规律
function body_scroll(){
console.log(this)
console.log(document.body.scrollTop)
}
window.onload = function () {
dataUpdate();
}
window.onresize = function () {
dataUpdate();
}
window.onscroll = function () {
console.log("window.onscroll")
dataUpdate();
}
document.body.onclick =function () {
dataUpdate();
}//浏览器位置变化了之后我们点击body来获取变化
用原生JS来获取值
function dataUpdate() {
var client_height = document.getElementById("span_client_height");
client_height.innerText = document.body.clientHeight||document.documentElement.clientHeight;
var client_width = document.getElementById("span_client_width");
client_width.innerText = document.body.clientWidth||document.documentElement.clientWidth;
var client_offsetHeight = document.getElementById("span_client_offsetHeight");
client_offsetHeight.innerText = document.body.offsetHeight;
var client_offsetWidth = document.getElementById("span_client_offsetWidth");
client_offsetWidth.innerText = document.body.offsetWidth;
var client_scrollHeight = document.getElementById("span_client_scrollHeight");
client_scrollHeight.innerText = document.body.scrollHeight;
var client_scrollTop = document.getElementById("span_client_scrollTop");
client_scrollTop.innerText = document.body.scrollTop;
var client_scrollWidth = document.getElementById("span_client_scrollWidth");
client_scrollWidth.innerText = document.body.scrollWidth;
var window_innerHeight = document.getElementById("span_inner_height");
window_innerHeight.innerText = window.innerHeight;
var window_innerWidth = document.getElementById("span_inner_width");
window_innerWidth.innerText = window.innerWidth;
var window_outerHeight = document.getElementById("span_outer_height");
window_outerHeight.innerText = window.outerHeight;
var window_outerWidth = document.getElementById("span_outer_width");
window_outerWidth.innerText = window.outerWidth;
var screen_height = document.getElementById("span_screen_height");
screen_height.innerText = window.screen.height;
var screen_width = document.getElementById("span_screen_width");
screen_width.innerText = window.screen.width;
var screen_availHeight = document.getElementById("span_screen_availHeight");
screen_availHeight.innerText = window.screen.availHeight;
var screen_availWidth = document.getElementById("span_screen_availWidth");
screen_availWidth.innerText = window.screen.availWidth;
var window_top = document.getElementById("span_window_top")
window_top.innerText = window.screenTop
var window_left = document.getElementById("span_window_left")
window_left.innerText = window.screenLeft
}
我们可以做进一步的封装，用策略模式写出一个页面宽高检测器
这可以查看http://jianjiacheng.com/brows...
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