Start downloading file using JQuery

Question

I want to start file downloading when I clicked the button.
I just have the path of the file.
How can I start downloading?
This is what I tried so far:

$('#download_button').click(function(){

    var filepath = $(this).attr('data-filepath');
    var do = '<a href="'+ filepath +'" download="file">file</a>';
    $(body).append(do);
});

What I am doing wrong.
I never want to redirect the page.
Is downloading start in browser or in software for downloading files if installed on client machine

Answer 1

Alternatively you can also set the top.location

$('#download_button').click(function(){
    var filepath = $(this).attr('data-filepath');
    top.location.href = filepath;
});