ext入门卡住了

[size=large]做一个小例子，我就是这里出现了问题，但是不知道怎么解决Ext.grid.Grid is not a constructor
(?)()()14.html （行 39）
DomHelper()()ext-all.js （行 7）
apply()()ext-base.js （行 7）
[Break on this error] ds: ds
给我点建议道理怎么改[/size]

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">


4.html
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">

<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<link rel="stylesheet" type="text/css" href="ext-3.0.0/resources/css/ext-all.css" />
<script type="text/javascript" src="ext-3.0.0/ext-base.js"></script>
<script type="text/javascript" src="ext-3.0.0/ext-all.js"></script>
<script type="text/javascript">
Ext.onReady(function(){
    var cm = new Ext.grid.ColumnModel([
        {header:'编号',dataIndex:'id'},
        {header:'名称',dataIndex:'name'},
        {header:'描述',dataIndex:'descn'}
    ]);
    var data = [
        ['1','name1','descn1'],
        ['2','name2','descn2'],
        ['3','name3','descn3'],
        ['4','name4','descn4'],
        ['5','name5','descn5']
    ];
    var ds = new Ext.data.Store({
        proxy: new Ext.data.MemoryProxy(data),
        reader: new Ext.data.ArrayReader({}, [
            {name: 'id'},
            {name: 'name'},
            {name: 'descn'}
        ])
    });
    ds.load();
    var grid = new Ext.grid.Grid('grid', {
        cm: cm,
        ds: ds
    });
    grid.render();

});
</script>




是照我写的吗？

这么写 就行 你的写法是ext1系列的写法：
[code="java"] <br> Ext.onReady(function(){ <br> var cm = new Ext.grid.ColumnModel([ <br> {header:&#39;编号&#39;,dataIndex:&#39;id&#39;}, <br> {header:&#39;名称&#39;,dataIndex:&#39;name&#39;}, <br> {header:&#39;描述&#39;,dataIndex:&#39;descn&#39;} <br> ]); <br> var data = [ <br> [&#39;1&#39;,&#39;name1&#39;,&#39;descn1&#39;], <br> [&#39;2&#39;,&#39;name2&#39;,&#39;descn2&#39;], <br> [&#39;3&#39;,&#39;name3&#39;,&#39;descn3&#39;], <br> [&#39;4&#39;,&#39;name4&#39;,&#39;descn4&#39;], <br> [&#39;5&#39;,&#39;name5&#39;,&#39;descn5&#39;] <br> ]; <br> var ds = new Ext.data.Store({ <br> proxy: new Ext.data.MemoryProxy(data), <br> reader: new Ext.data.ArrayReader({}, [ <br> {name: &#39;id&#39;}, <br> {name: &#39;name&#39;}, <br> {name: &#39;descn&#39;} <br> ]) <br> }); <br> ds.load(); <br> var grid = new Ext.grid.GridPanel({<br> renderTo:&quot;grid&quot;,<br> cm: cm, <br> height:500,<br> ds: ds <br> }); </p> <pre><code>}); &lt;/script&gt; </code></pre> <p></head> </p> <p><body> </p> <div id="grid"></div> <p></body> <br> </html> [/code]</p>

很明显啊。因为Ext里就没有Ext.grid.Grid，只有Ext.grid.GridPanel

这里
var grid = new Ext.grid.Grid('grid', { 改成

var grid = new Ext.grid.GridPanel('grid', {

建议参考Ext3.0自带的关于GridPanel的例子，然后自己再慢慢练习！

点采纳即可 :D

呵呵。。感觉谁的对你最有帮助就采纳谁的！