Wocommerce theme problem (jQuery)

Hello everyone:

In my theme directory, I have added some jqurey code in orders.php. But it does not work. What should I do?

Here is the example:
https://s31.postimg.org/jk71ow0bv/Screenshot_from_2016_07_22_16_26_54.png
When people click on the button, a pop up form will display. But when I insert the code in the theme. It does not work.

https://wordpress.org/plugins/woocommerce/