Viewport 它的佈局會佔用整個 body,也應該是這樣,它會隨着瀏覽器的高度和寬度的變化而變化。javascript
Panel 佈局時須要提供必定的高度和寬度值,這個值是固定的,它不會隨着瀏覽器的變化而變化。css
接下來,我來演示下,這二者佈局的差別,也是我在工做時遇到的問題而後解決之:html
html:java
<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> <!DOCTYPE html> <html> <head runat="server"> <meta name="viewport" content="width=device-width" /> <title>博客管理</title> <link href="../../Scripts/extjs/resources/css/ext-all-neptune.css" rel="stylesheet" type="text/css" /> <link href="../../Scripts/Lib/Manage/Manage.css" rel="stylesheet" type="text/css" /> <script src="../../Scripts/extjs/ext-all.js" type="text/javascript"></script> <script src="../../Scripts/extjs/ext-theme-neptune.js" type="text/javascript"></script> <script src="../../Scripts/extjs/locale/ext-lang-zh_CN.js" type="text/javascript"></script> <script src="../../Scripts/Lib/Manage/Manage.js" type="text/javascript"></script> </head> <body>
</body> </html>
Viewport:瀏覽器
Ext.onReady(function () { Viewport(); }); function Viewport() { var viewport = Ext.create("Ext.container.Viewport", { layout: { type: 'border', padding: '5', }, items: [{ region: 'north', height: 50, border: false, margin: '0,0,0,0', bodyStyle: { background: '#3992D4' }, html: '<div class="header"><div class="title">優爾博客後臺管理</div><div class="user">歡迎你:張威,<a href="#">退出</a></div></div>' }, { region: 'west', title: '博客導航', width: 250, stateId: 'statePanelExample', stateful: true, split: true, collapsible: true, padding:'0', layout: 'accordion', items: [ { title: '功能管理', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '文章管理', leaf: true, href: '#' }, { id: '02', text: '標籤管理', leaf: true, href: '#' }, { id: '03', text: '用戶管理', leaf: true, href: '#' } ] } }] }, { title: '博客設置', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '標題設置', leaf: true, href: '#' }, { id: '02', text: '模板設置', leaf: true, href: '#' }, { id: '03', text: '聯繫方式', leaf: true, href: '#' } ] } }] }, { title: '通知設置', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '通知設置', leaf: true, href: '#' } ] } }] },{ title: '系統菜單', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '密碼修改', leaf: true, href: '#' } ] } }] } ] }, { region: 'center', xtype: 'tabpanel', id: 'MainTabPanel', activeTab: 0, items: { title: '首頁', html: '<h1>歡迎使用優爾博客1.0系統</h1>' } }, { region: 'south', collapsible: false, bodyStyle: { background: '#3992D4' }, html: '<div class="footer">© 合肥優爾電子科技有限公司 2014</div>', split: false, height: 22 }] }); }
經過F12工具分析可知,Viewport確實佔用整個body,工具
如今咱們來看看Panel:佈局
<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" %>
<!DOCTYPE html>
<html>
<head runat="server">
<meta name="viewport" content="width=device-width" />
<title>博客管理</title>
<link href="../../Scripts/extjs/resources/css/ext-all-neptune.css" rel="stylesheet"
type="text/css" />
<link href="../../Scripts/Lib/Manage/Manage.css" rel="stylesheet" type="text/css" />
<script src="../../Scripts/extjs/ext-all.js" type="text/javascript"></script>
<script src="../../Scripts/extjs/ext-theme-neptune.js" type="text/javascript"></script>
<script src="../../Scripts/extjs/locale/ext-lang-zh_CN.js" type="text/javascript"></script>
<script src="../../Scripts/Lib/Manage/Manage.js" type="text/javascript"></script>
</head>
<body>
<div id="container"></div>
</body>
</html>
.title{
text-align: left;
color: white;
font-weight: bold;
font-size: 30px;
margin: 0;
padding: 0;
padding-top: 5px;
width: 85%;
height: 100%;
float: left;
}
.footer {
text-align: center;
color: white;
font-weight: bold;
padding-top: 5px;
}
.user {
float: left;
color: white;
width:15%;
height: 100%;
font-size: 14px;
padding-top: 15px;
font-weight: bold;
}
.user a
{
margin-left: 10px;
color: white;
}
#container { width: 1170px; margin: 0 auto; }
Ext.onReady(function () { var panel= ExtPanel(); window.onresize = function() { panel.setHeight(document.documentElement.clientHeight); }; }); function ExtPanel() { var pandel = Ext.create("Ext.panel.Panel", { renderTo:'container', width:1170, height:document.documentElement.clientHeight, layout: { type: 'border', padding: '5', }, items: [{ region: 'north', height: 50, border: false, margin: '0,0,0,0', bodyStyle: { background: '#3992D4' }, html: '<div class="header"><div class="title">優爾博客後臺管理</div><div class="user">歡迎你:張威,<a href="#">退出</a></div></div>' }, { region: 'west', title: '博客導航', width: 250, stateId: 'statePanelExample', stateful: true, split: true, collapsible: true, padding:'0', layout: 'accordion', items: [ { title: '功能管理', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '文章管理', leaf: true, href: '#' }, { id: '02', text: '標籤管理', leaf: true, href: '#' }, { id: '03', text: '用戶管理', leaf: true, href: '#' } ] } }] }, { title: '博客設置', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '標題設置', leaf: true, href: '#' }, { id: '02', text: '模板設置', leaf: true, href: '#' }, { id: '03', text: '聯繫方式', leaf: true, href: '#' } ] } }] }, { title: '通知設置', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '通知設置', leaf: true, href: '#' } ] } }] },{ title: '系統菜單', layout: 'fit', items: [{ xtype: 'treepanel', border: 0, rootVisible: false, root: { expanded: true, children: [ { id: '01', text: '密碼修改', leaf: true, href: '#' } ] } }] } ] }, { region: 'center', xtype: 'tabpanel', id: 'MainTabPanel', activeTab: 0, items: { title: '首頁', html: '<h1>歡迎使用優爾博客1.0系統</h1>' } }, { region: 'south', collapsible: false, bodyStyle: { background: '#3992D4' }, html: '<div class="footer">© 合肥優爾電子科技有限公司 2014</div>', split: false, height: 22 }] }); return pandel; }
由此可知,利用renderTo將整個的panel放在container裏,而後再設置container的width:1170px和margin:0 auto;就可讓它居中,spa
可是,是的,我說了可是,高度要有固定值,也就是說你設置panel的高度爲:height:800,它就是800,這樣設置好嗎?server
很顯然這是行不通的,爲何?由於每一個人的電腦顯示器的屏幕顯示率是有差別的,你這樣設置成固定值,就有可能不是每臺電腦都能正常顯示,htm
有興趣的能夠本身試試。
不過這也是有解決方法的,就是利用「document.documentElement.clientHeight」來獲取當前瀏覽器的可見區域顯示高度,這樣一來
就解決了剛纔咱們提到的問題。
不要高興的太早,還有一個問題就是說,當你瀏覽器的寬度和高度變化時,由於你用「document.documentElement.clientHeight」
獲取的高度也是個固定值,也就是說,它不是隨着瀏覽器的變化而變化,這可不是咱們想要的。
不過咱們又有新的解決方法,這些方法都是有人在網上寫好的,baidu一下就有可能搜到,不過 ,我把它串聯起來,
這個代碼是這樣的:
var panel= ExtPanel();
window.onresize = function() {
panel.setHeight(document.documentElement.clientHeight);
};
利用window.onresize監聽瀏覽器的變化,動態的設置Panel的高度,這樣一來,全部問題所有解決!