Ext.form.FormPanel 无法显示表单面板求解答

Question

<script type="text/javascript">function Read1() {        Ext.QuickTips.init();        var MyForm=new Ext.form.FormPanel({            title:'表单应用',            width:300,            height:200,            frame:true,            labelSeparator:':',            labelAlign:'right',            renderTo:id1,            items:[                new Ext.form.TextField({                    fieldLabel:'用户名称',                    allowBlank:false,                    blankText:'请输入用户名',                    msgTarget:'side'                }),                new Ext.form.TextField({                    fieldLabel:'用户密码',                    allowBlank:false,                    inputType:'password',                    blankText:'请输入密码',                    msgTarget:'side'                                    })            ]        });    }    Ext.onReady(Read1);    </script>上面的代码  无法显示表单面板求解答

Answer 1

renderTo:id1这个id1对象从哪来的？如果是id，要用字符串，加引号

Answer 2

renderTo:id1换成applyTo: 'id1'