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Ext Js 学习日记 (1) 开始使用Ext JS

2010-07-17 18:28 239 查看

最近发现Ext JS 在后台的后台的应用和漂亮的界面，打算学习一下Ext JS,并打算将其引入现有项目中，故此记录些学习日记加深下印象，也希望给如同我一样的初学者能提供一些帮助共同进步。

1、首先下载Ext JS

我下载的是 3.2.0版本，下载地址：http://www.sencha.com/deploy/ext-3.2.0.zip

2、解压后我们获得很多文件，在第一次使用中你需要使用一下文件

adapter/ext/ext-base.js

ext-all.js

src/locale/ext-lang-zh_CN.js

然后就是资源文件夹 resources整个目录

3、建立自己的学习项目网站

将以上文件拷贝到规划的文件夹tx_client,我的项目目录如下

4、编写第一个Ext JS 应用例子

我的第一个例子是Grid的使用代码如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>第一个Ext JS例子</title>
<link type="text/css" rel="stylesheet" href="tx_client/ext/resources/css/ext-all.css" mce_href="tx_client/ext/resources/css/ext-all.css"></link>
<mce:script type="text/javascript" src="tx_client/ext/adapter/ext/ext-base.js" mce_src="tx_client/ext/adapter/ext/ext-base.js"></mce:script>
<mce:script type="text/javascript" src="tx_client/ext/ext-all.js" mce_src="tx_client/ext/ext-all.js"></mce:script>
<mce:script type="text/javascript" src="tx_client/ext/src/locale/ext-lang-zh_CN.js" mce_src="tx_client/ext/src/locale/ext-lang-zh_CN.js"></mce:script>
</head>
<body>
<mce:script type="text/javascript"><!--
Ext.onReady(function() {

// NOTE: This is an example showing simple state management. During development,
// it is generally best to disable state management as dynamically-generated ids
// can change across page loads, leading to unpredictable results.  The developer
// should ensure that stable state ids are set for stateful components in real apps.
Ext.state.Manager.setProvider(new Ext.state.CookieProvider());

// sample static data for the store
var myData = [
['3m Co', 71.72, 0.02, 0.03, '9/1 12:00am'],
['Alcoa Inc', 29.01, 0.42, 1.47, '9/1 12:00am'],
['Altria Group Inc', 83.81, 0.28, 0.34, '9/1 12:00am'],
['American Express Company', 52.55, 0.01, 0.02, '9/1 12:00am'],
['American International Group, Inc.', 64.13, 0.31, 0.49, '9/1 12:00am'],
['AT&T Inc.', 31.61, -0.48, -1.54, '9/1 12:00am'],
['Boeing Co.', 75.43, 0.53, 0.71, '9/1 12:00am'],
['Caterpillar Inc.', 67.27, 0.92, 1.39, '9/1 12:00am'],
['Citigroup, Inc.', 49.37, 0.02, 0.04, '9/1 12:00am'],
['E.I. du Pont de Nemours and Company', 40.48, 0.51, 1.28, '9/1 12:00am'],
['Exxon Mobil Corp', 68.1, -0.43, -0.64, '9/1 12:00am'],
['General Electric Company', 34.14, -0.08, -0.23, '9/1 12:00am'],
['General Motors Corporation', 30.27, 1.09, 3.74, '9/1 12:00am'],
['Hewlett-Packard Co.', 36.53, -0.03, -0.08, '9/1 12:00am'],
['Honeywell Intl Inc', 38.77, 0.05, 0.13, '9/1 12:00am'],
['Intel Corporation', 19.88, 0.31, 1.58, '9/1 12:00am'],
['International Business Machines', 81.41, 0.44, 0.54, '9/1 12:00am'],
['Johnson & Johnson', 64.72, 0.06, 0.09, '9/1 12:00am'],
['JP Morgan & Chase & Co', 45.73, 0.07, 0.15, '9/1 12:00am'],
['McDonald/'s Corporation', 36.76, 0.86, 2.40, '9/1 12:00am'],
['Merck & Co., Inc.', 40.96, 0.41, 1.01, '9/1 12:00am'],
['Microsoft Corporation', 25.84, 0.14, 0.54, '9/1 12:00am'],
['Pfizer Inc', 27.96, 0.4, 1.45, '9/1 12:00am'],
['The Coca-Cola Company', 45.07, 0.26, 0.58, '9/1 12:00am'],
['The Home Depot, Inc.', 34.64, 0.35, 1.02, '9/1 12:00am'],
['The Procter & Gamble Company', 61.91, 0.01, 0.02, '9/1 12:00am'],
['United Technologies Corporation', 63.26, 0.55, 0.88, '9/1 12:00am'],
['Verizon Communications', 35.57, 0.39, 1.11, '9/1 12:00am'],
['Wal-Mart Stores, Inc.', 45.45, 0.73, 1.63, '9/1 12:00am']
];

/**
* Custom function used for column renderer
* @param {Object} val
*/
function change(val) {
if (val > 0) {
return '<span style="color:green;" mce_style="color:green;">' + val + '</span>';
} else if (val < 0) {
return '<span style="color:red;" mce_style="color:red;">' + val + '</span>';
}
return val;
}

/**
* Custom function used for column renderer
* @param {Object} val
*/
function pctChange(val) {
if (val > 0) {
return '<span style="color:green;" mce_style="color:green;">' + val + '%</span>';
} else if (val < 0) {
return '<span style="color:red;" mce_style="color:red;">' + val + '%</span>';
}
return val;
}

// create the data store
var store = new Ext.data.ArrayStore({
fields: [
{ name: 'company' },
{ name: 'price', type: 'float' },
{ name: 'change', type: 'float' },
{ name: 'pctChange', type: 'float' },
{ name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia' }
]
});

// manually load local data
store.loadData(myData);

// create the Grid
var grid = new Ext.grid.GridPanel({
store: store,
columns: [
{ id: 'company', header: 'Company', width: 160, sortable: true, dataIndex: 'company' },
{ header: 'Price', width: 75, sortable: true, renderer: 'usMoney', dataIndex: 'price' },
{ header: 'Change', width: 75, sortable: true, renderer: change, dataIndex: 'change' },
{ header: '% Change', width: 75, sortable: true, renderer: pctChange, dataIndex: 'pctChange' },
{ header: 'Last Updated', width: 85, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange' }
],
stripeRows: true,
autoExpandColumn: 'company',
height: 350,
width: 600,
title: 'Array Grid',
// config options for stateful behavior
stateful: true,
stateId: 'grid'
});

// render the grid to the specified div in the page
grid.render('grid-example');
});

// --></mce:script>

<div id="grid-example"></div>
</body>
</html>

效果如下：

我就是看好其Grid的强大功能，才开始学习Ext JS的呵呵！

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