v1_10 懂得数据绑定

v1_10 了解数据绑定
v1_10 Understanding data binding 了解flex数据绑定ex1_03?这节主要举例讲了控制内部的怎么取得其它控件的属性看以下代码的效果Email的text会自动获得firstName.text和lastName.text的值,并组装成字符串属性使用{}表示?

 <!-- UI components ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -->    <mx:Form x="43" y="46"         contentBackgroundColor="#DADADA"         dropShadowVisible="true"         cornerRadius="5"         backgroundColor="#FFFFFF"         width="313">                <s:Label text="Employee Registration"             color="#0024FF"             fontSize="16" fontWeight="bold"             width="279" height="32"            verticalAlign="top"             textAlign="center" />               <mx:FormItem label="First Name:">                   <s:TextInput id="firstName"                 width="196"/>                </mx:FormItem>                <mx:FormItem label="Last Name:">                        <s:TextInput id="lastName"                 width="196"/>                    </mx:FormItem>                <mx:FormItem label="Email:" dropShadowVisible="false">                        <s:TextInput text="{firstName.text}.{lastName.text}@xyzcompany.com"                 width="196"/>                    </mx:FormItem>