as shown in the figure, every time you click to create a new item, there will be a line of form, because traversing an array, so how to accurately assign the value to the corresponding object?
and how to delete a piece of data accurately? I use data-index= "{{index}}"
to get the corresponding subscript, and then delete splice (index, 1)
in the array, but delete it from the bottom to the top every time.