Native JavaScript enables dynamic provincial/county-level linkage drop-down box menu instance code, javascript drop-down box

Native JavaScript enables dynamic provincial/county-level linkage drop-down box menu instance code, javascript drop-down box

Like when you select an address for shopping, you can dynamically load the city list by selecting a province, and dynamically load the county list by selecting a city. This allows you to achieve three levels of association between provinces, cities, and counties, the following uses native JavaScript to implement this function:

First, we will show you the test results:

When no selection is made:

When selecting:

The Code is as follows:

<! DOCTYPE html> 
Of course, the provinces, cities, and counties are dynamically linked. As long as the top-level content changes, all sub-level content will also change or be reset to City or Country.
The above is the native JavaScript provided by the editor for you to implement the code of the dynamic provincial/municipal/county-level linkage drop-down box menu instance, hoping to help you.
Articles you may be interested in:

 

 
  
ASP + JS three-level linkage drop-down menu [Call Database Data]
 
  
Jquery + json universal three-level linkage drop-down list
 
  
Example of three frameworks (aspnet, Jquery, and ExtJs) of DropDownList + Ajax in asp.net
 
  
Simple JSP + DWR implementation three-level linkage drop-down menu selection implementation skills
 
  
Js implements a provincial/municipal-level association selection box code sharing
 
  
Introduction to Three-Level Association select drop-down option instance for js operations across Frames
 
  
JQuery JSON implementation of three-level linkage examples
 
  
Three-Level linkage menu of pure JS province, city, and district extracted from QQ website
 
  
PHP + Mysql + Ajax + JS achieve provincial/municipal level-3 linkage