如果检查行，则循环遍历表并将特定单元格存储在数组中

I currently have a table that is triggered by a drop down. Inside the table, there's a checkbox. When the check box is checked and the user clicks on the confirm button, the code should loop through the table and get the email values of all the checked rows and store them in an array. So far, it can check if the rows are checked. I've found a few ways online but its not working. Here's the table: I currently have a table that is triggered by a