Interaction between Ajax asynchronous transmission and PHP

The background front-end page contains two select boxes, one associated with the school and the other associated with the major. Now you need to select the select box of the school to display the information about the school, the select professional only belongs to the professional name of the college. That is, to achieve a second-level linkage effect. The onchange event is defined in the two select statements, and the event uses the ajax GET method to backward

The background front-end page contains two select boxes, one associated with the school and the other associated with the major. Now you need to select the select box of the school to display the information about the school, the select professional only belongs to the professional name of the college. That is, to achieve a second-level linkage effect. The onchange event is defined in the two select statements, and the event uses the ajax GET method to backward

Background

The front-end page contains two select boxes, one associated with the school and the other associated with the major. Now you need to select the select box of the school to display the information about the school, the select professional only belongs to the professional name of the college. That is, to achieve a second-level linkage effect.

The onchange events are defined in the two select statements respectively. In the event, the ajax GET method is used to submit information to the backend PHP, and then the queried information is echo or document. write.

Note: The code is written by a blogger named y0umer.