1.

 

var province=

this

.options.form.getWidgetByName(

"province"

);          

                                                                   

                                                                   

        var area=

this

.options.form.getWidgetByName(

"area"

);    

 

2.

 

var thislen = 

this

.getValue(area).length;  

 

3.

 

if

(thislen) province.setVisible(

true

);  

 

4.

 

else

 alert(

"

请选择地区"

);