javascript - Two same instances created with page refresh in moodle -


i calling ajax function moodle block when onchange event detected. sends courseid server page , returns necessary fields updates div inside block. dropdown has onchange event generated database call. problem is, when adding block in moodle page, page refreshed , see 2 instances of block. reason?

update

the structure of code following;

<script></script>   <?php      ?>

from inside php block calling javascript function parameters. changing div of php block. javascript sending parameters php page wrote db queries. when changed code following, error gone:

 <?php     script written inside $this->content->text   ?>

can shed light on reason?


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