如何使用基于2个其他下拉框的动态日期填充下拉列表

I have 3 dropdownlists 1. here I need to select a quality of products 2. here I need to select standard or non standard IF standard then the 3rd list needs to be populated with dynamic data IF non standard then nothing (3rd box empty)I have 3 dropdownlists 1. here I need to select