Javascript window.onresize不';似乎没有提供多个更新?
如何使window.onresize跟随用户的多个窗口大小调整?我有下面的Javascript代码,可以打印出窗口大小。它只提供一个更新:Javascript window.onresize不';似乎没有提供多个更新?,javascript,Javascript,如何使window.onresize跟随用户的多个窗口大小调整?我有下面的Javascript代码,可以打印出窗口大小。它只提供一个更新: var someStuff = ['<p id="page"></p>']; document.write(someStuff); var widthWin = $(window).width(); document.write('<p>'+widthWin+'</p>'); window.onresize
var someStuff = ['<p id="page"></p>'];
document.write(someStuff);
var widthWin = $(window).width();
document.write('<p>'+widthWin+'</p>');
window.onresize = function() {
var element = document.getElementById("page");
element.parentNode.removeChild(element);
document.write(someStuff);
widthWin = $(window).width();
//widthWin = window.innerWidth; //I tried this too
document.write('<p>'+widthWin+'</p>');
}
var someStuff=[''];
写一些东西;
var widthWin=$(窗口).width();
文件。写入(“”+widthWin+””);
window.onresize=函数(){
var元素=document.getElementById(“页面”);
element.parentNode.removeChild(元素);
写一些东西;
widthWin=$(窗口).width();
//widthWin=window.innerWidth;//我也试过了
文件。写入(“”+widthWin+””);
}
或者可能我完全错误地处理了这个问题?代码
文档代码>替换html的内容,这意味着window.onresize
功能也被删除
如果要替换页面内容,可以执行以下操作:document.body.innerHTML=“
无论如何,这里有一个删除此文档的代码示例。要测试它,请调整窗口大小,您可以看到它显示了新的大小:
<body>
this is my page test<br/>
size: <span id="page"></span>
<script>
showWindowSize();
window.onresize = function() {
showWindowSize();//show window size everytime window change
}
function showWindowSize(){
var element = document.getElementById("page");
//get width size of the body
var widthWin = window.document.body.clientWidth;
page.innerHTML=widthWin;
}
</script>
</body>
这是我的页面测试
尺寸:
showWindowsSize();
window.onresize=函数(){
ShowWindowsSize();//每次窗口更改时显示窗口大小
}
函数showWindowsSize(){
var元素=document.getElementById(“页面”);
//获取主体的宽度和大小
var widthWin=window.document.body.clientWidth;
page.innerHTML=widthWin;
}
将其另存为示例.xhtml。如果你不学会远离innerHTML
和document.write,你将永远无法编写应用程序级脚本
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>window.onresize event Test</title>
<script type="application/javascript">
//<![CDATA[
function example()
{
//Screen Resolution
var v1 = screen.width+'x'+screen.height;
var s1 = document.getElementsByTagName('p')[0].getElementsByTagName('span')[0];
if (s1.firstChild) {s1.firstChild.nodeValue = v1;}
else
{
var t1 = document.createTextNode(v1);
s1.appendChild(t1);
}
//Screen Available
var v2 = screen.availWidth+'x'+screen.availHeight;
var s2 = document.getElementsByTagName('p')[1].getElementsByTagName('span')[0];
if (s2.firstChild) {s2.firstChild.nodeValue = v2;}
else
{
var t2 = document.createTextNode(v2);
s2.appendChild(t2);
}
//The body element using clientWidth
var v3 = document.getElementsByTagName('body')[0].clientWidth+'x'+document.getElementsByTagName('body')[0].clientHeight;
var s3 = document.getElementsByTagName('p')[2].getElementsByTagName('span')[0];
if (s3.firstChild) {s3.firstChild.nodeValue = v3;}
else
{
var t3 = document.createTextNode(v3);
s3.appendChild(t3);
}
//The body element using .getClientRects()[0].width
var v4 = document.getElementsByTagName('body')[0].getClientRects()[0].width+'x'+document.getElementsByTagName('body')[0].getClientRects()[0].height;
var s4 = document.getElementsByTagName('p')[3].getElementsByTagName('span')[0];
if (s4.firstChild) {s4.firstChild.nodeValue = v4;}
else
{
var t4 = document.createTextNode(v4);
s4.appendChild(t4);
}
}
window.onresize = function()
{
example();
}
window.onload = function()
{
example();
}
//]]>
</script>
<style type="text/css">
body {background-color: #ddd; font-size: 20px; min-height: 100%; width: 100%;}
code {color: #22f;}
span {color: #f22; font-weight: bold;}
</style>
</head>
<body>
<h1>window.onresize event Test</h1>
<div>
<p>Screen Resolution (screen.width / screen.height): <span> </span></p>
<p>Screen Available (screen.availWidth / screen.availHeight): <span> </span></p>
<p>The body Element (clientWidth / clientHeight): <span> </span></p>
<p>The body Element (getClientRects()[0].width / getClientRects()[0].height): <span> </span></p>
</div>
<h2>Explenation</h2>
<div>
<p>The <code>screen.width</code> and <code>screen.height</code> objects represent the <em>full screen resolution</em> of the monitor itself, this should not change.</p>
<p>The <code>screen.availWidth</code> and <code>screen.availHeight</code> objects represent the <em>maximum browser window size</em> of the monitor itself, this should not change.</p>
<p>The <code>clientWidth</code> and <code>clientHeight</code> objects represent the <em>dimentions of the body element</em> of the monitor itself.</p>
<p>The <code>getClientRects()[0].width</code> and <code>getClientRects()[0].height</code> objects represent the <em>indicate the bounding rectangles</em> for the body element.</p>
</div>
</body>
</html>
您不使用innerHTML
或document.write
,因为它们不符合DOM。@John我同意不使用document.write,我只是解释了使用它的效果。。。关于innerHTML,这里是w3c参考:我尝试用document.body.innerHTML=“”+widthWin+””)替换document.write;它仍然给了我完全相同的结果。只有一个更新。@John:那么,符合DOM的解决方案是什么呢?谢谢。@lynvie刚刚用一个例子编辑了答案,其中onresize起作用,并在页面中显示宽度大小谢谢。我不知道有什么不同。Good to know.PS您能推荐一个与DOM兼容的javascript的好参考吗?我的书根本没有讨论这个问题。简单地说,就是不要使用innerHTML
或文档;真正学习的最好方法是不要使用框架,它们最初可能会加快开发速度,但它们依赖于不可靠的方法,如innerHTML
,而这些方法在应用程序级别无法使用。熟悉(i in-window){alert('window.+i);}
(in-operator)的,并探索DOM及其为对象、方法等显示的内容。