Don't Reload Webpage After Flask Ajax Request

I have this ajax request $(function() { $('#left').bind('click', function() { var form = $('form#data')[0]; // var formData = new FormData(form); $.a

Solution 1:

Blind guess : your button may be part of a form, so its default behaviour when clicked is to submit the form and reload the page. You can prevent that by using event.preventDefault() :

$('#left').bind('click', function(event) {
    event.preventDefault()
    ......