Updating An Array On Button Click Javascript

This question may be a bit long winded but bear with me. I am trying to update and array every time a user hits the save button. When they click save an image of a canvas on the p

Solution 1:

After removing the image from the array you are not storing it anywhere so the splice result is lost and the array remains the same

    array.splice(x,1);

needs to be

array =  array.splice(x,1);