sorting-visualizer | simple python project | Computer Vision library

I am making a sorting visualizer in javascript. This is a example of one of sorting algorithms: selection sort But when I run the code even if the Selection sort visualizer.compare and visualizer.swap functions have 1 seconds pauses the array is sorted instantly instead of pausing. I think this is because javascript runs asynchrony beacuse if I instead make the code that swaps the heights of the bars into a timeout it runs like normal except after the timeout time has passed all of the heights are changed at the same time which is weird

all of the code is run by adding a on click event to a button that runs the selectionSort function when clicked (github code https://github.com/Jalrux/sorting-visualizer)