JS implementation of the Drop-down list of linkage (according to the selected text value, change another drop-down list of Chinese values (text))

To implement the linkage problem in the two Drop-down lists, change the value in another Drop-down list based on the value in the first Drop-down list, select the value of text, and change the value of text, such as the Drop-down list below, and choose the appropriate type of document according to nationality (if not Chinese nationality, the default choice passport)

<tr>
&LT;TD style= "Text-align:right" >
National &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Cadastral
</td>
&LT;TD width= "20%" >
<asp:dropdownlist id= "DDLGJ" runat= "Server" height= "20px" width= "142px" runat= "Server" onchange= "Gethuzhao" () >
</asp:DropDownList>
</td>
&LT;TD style= "Text-align:right" width= "12%" >
Certificate type
<%--<asp:linkbutton id= "Lkbhospno" text= "one" forecolor= "Blue" runat= "server" font-underline= "True" Onclientclick= "Queryhispat ();" ></asp:LinkButton>--%><span>:</span>
</td>
&LT;TD width= "20%" >
<asp:dropdownlist id= "Ddlidcardtype" runat= "Server" height= "18px" width= "141px" class= "selected" >
</asp:DropDownList>
</td>
</tr>

JS Implementation code:

function   Gethuzhao ()
     {
        if ($ ("#ddlGJ"). Find ("option:selected"). Text ()!= "China") {
      $ ("#ddlIDCardType Option "). each (function () {
       if ($ (). Text () =" Passport ") {
         $ (This). attr ("selected", true);
       } 
      };
     }else {
      $ ("#ddlIDCardType option"). each (function () {
       if ($ (this). Text () = "resident identity card") {
         $ (This). attr ("selected", true);
       } 
      };
     }
    
    }