ext2.0学习入门笔记1
ext2.0学习入门笔记1
1.先去http://www.extjs.com/download下载ext2.0的压缩包.
2.随便解压缩到什么目录下，不管目录名是什么，最后应该看到里边是这样的目录结构。
adapter,air,build, docs, examples,resources,source,
CHANGES.txt, ext-all.js, ext-all-debug.js, ,ext-core.js,
ext-core-debug.js, INCLUDE_ORDER.txt,LICENSE.txt
3.现在我们利用它的目录结构写一个HelloWorld例子：
<link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" />
<script type="text/javascript" src="../../adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../../ext-all.js"></script>
<script type="text/javascript" src="../examples.js"></script>
<script>
Ext.onReady(function(){
Ext.MessageBox.alert('helloworld', 'Hello world');
});
</script>
4.接下来我们写一个Ext.grid.GridPanel的例子：
<html>
<head>
<title>Array Grid Example</title>
<link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" />
<script type="text/javascript" src="../../adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../../ext-all.js"></script>
</head>
<body>
<div id="grid1"></div>
</body>
<script type="text/javascript">
var readerSex = function(value){
if(value=='male'){
return "<span style='color:#FF0000; font-weight:bold'>红男</span>";
}else{
return "<span style='color:green; font-weight:bold'>绿女</span>";
}
};
var renderDescn=function(value, cellmeta, record, rowIndex, columnIndex, store){
var str ="<input type='button' value='查看详细描述' onClick='alert(\""+
"这个单元格的值:"+value+"\\n"+
"这个单元格的配置:cellId="+cellmeta.cellId+", id="+cellmeta.id+", css:"+cellmeta.css+"\\n"+
"这个单元格所在行的record:"+record+",一行数据全在这里"+"\\n"+
"该单元格所在的行rowIndex:"+rowIndex+"?\\n"+
"这个单元格所在的列columnIndex:"+columnIndex+"?\\n"+
"这个Ext.data.store???,store="+store+"\")'/>";
return str;
}
var sm = new Ext.grid.CheckboxSelectionModel();
var cm = new Ext.grid.ColumnModel([
new Ext.grid.RowNumberer(),
sm,
{header:'编号', dataIndex:'id', sortable:true},
{header:'姓名', dataIndex:'name'},
{header:'性别', dataIndex:'sex', renderer:readerSex},
{header:'描述', dataIndex:'descn', renderer:renderDescn}]);
var data = [['id1', 'name1','male', 'descn1'],
['id2', 'name2','female', 'descn2'],
['id3', 'name3','male', 'descn3']];
var ds = new Ext.data.Store({
proxy:new Ext.data.MemoryProxy(data),
reader:new Ext.data.ArrayReader({}, [
{name:'id'},
{name:'name'},
{name:'sex'},
{name:'descn'}
])
});
var el = Ext.get('grid1');
var grid= new Ext.grid.GridPanel({
el:el,
ds:ds,
cm:cm,
sm:sm,
bbar:new Ext.PagingToolbar({
pageSize:2,
store:ds,
displayInfo:true,
displayMsg:'显示第{0}条记录到第{1}条记录,共{2}条记录',
emptyMsg:'没有记录',
paramNames:{
start:1,
limit:2
}
})
});
ds.load();
grid.render();
</script>
</html>
出现的问题：
1.当我第一次运行这段代码时发现，它在火狐浏览器上可以运行，但是在IE浏览器上确不能运行，原来是我在
var data = [['id1', 'name1','male', 'descn1'],
['id2', 'name2','female', 'descn2'],
['id3', 'name3','male', 'descn3']];
这段代码中中多了一个"，",这样才会出现这样的结果，所以大家一定要细心啊!
5.现在我们来做一个静态的树，即做一个Ext.tree.TreePanel的例子：
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" />
<script type="text/javascript" src="../../adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="../../ext-all.js"></script>
</head>
<body>
<div id="tree" style="height:300px"></div>
</body>
<script type="text/javascript">
var root = new Ext.tree.TreeNode({text:'我是根'});
var node1 = new Ext.tree.TreeNode({text:'枝1'});
var node2 = new Ext.tree.TreeNode({text:'枝2'});
var leaf1 = new Ext.tree.TreeNode({text:'叶1'});
var leaf2 = new Ext.tree.TreeNode({text:'叶2'});
root.appendChild(node1);
root.appendChild(node2);
node1.appendChild(leaf1);
node1.appendChild(leaf2);
var tree = new Ext.tree.TreePanel({
el:'tree'
});
tree.setRootNode(root);
root.expanded=true;
tree.render();
</script>
</head>
<body>
</body>
</html>
以上是我们今天总结的一些知识点，如果以上的那个下载地址不行，可以到附件中去下载ext-2.0.1.zip.