How to process ajax request?

Question

JavaScript

Good afternoon, I understand ajax and flask, here I have such a function

@app.route('/ajax', methods=['GET', 'POST'])
def ajax_output():
    if request.method == 'POST':
        usd = usd_value()
        euro = euro_value()
        return jsonify(result=[usd, euro])
    return render_template('Login.html')

this function transmits dollar rates,
tell me how to make an ajax request that will contact the server every 10 seconds, and request dollar rates, I've been fighting with this for 3 days, I don't understand what's what)

Answer 1

Here is an example:

<script src="http://code.jquery.com/jquery-1.5.min.js"></script>
<script>
function check(){
  $.post("/ajax", {}, function(data){$("input[name='currency']").val(data)});
}
setInterval(check, 10000);
</script>
<input type="text" name="currency" readonly>

I hope getting data from json and displaying it where you need it will not be difficult.