I'm going to answer this question which was found in the comments of the question

"which becomes a question of how to submit a form without a 'submit' button.."

So it is very possible to submit a value when a user clicks on the button

{% block content %} <form id="target" action="YourViewName"> <div id="results" class="container">{{data_load|safe}}</div> <input id='testName' type='checkbox' value='Yes' name='testName'> </form> {% endblock %} $( "#results" ).click(function() { $( "#target" ).submit(); }); 

If you want to stay on the same page, however, you're going to need to use an ajax call to pass the data back rather then use a standard submit, however This tutorial covers that topic fairly well. but a basic change to send the data back would look like

$( "#results" ).click(function() { var request = $.ajax({ type: "POST", url: "YourViewName", data: {'input_value':$('#testName').val}, dataType: "html" }).done(function(msg) { // I don't know what you want to do with a return value... // or if you even want a return value } }); 

and the flask would look like

@app.route("/YourViewName") def example(): list_name = request.args.get("input_value") #if you don't want to change the web page just give a blank return return "" 

I'm going to answer this question which was found in the comments of the question

"which becomes a question of how to submit a form without a 'submit' button.."

So it is very possible to submit a value when a user clicks on the button

{% block content %} <form id="target" action="YourViewName"> <div id="results" class="container">{{ data_load|safe }}</div> <input id='testName' type='checkbox' value='Yes' name='testName'> </form> {% endblock %} $( "#results" ).click(function() { $( "#target" ).submit(); }); 

If you want to stay on the same page, however, you're going to need to use an ajax call to pass the data back rather then use a standard submit, however This tutorial covers that topic fairly well. but a basic change to send the data back would look like

$( "#results" ).click(function() { var request = $.ajax({ type: "POST", url: "/YourViewName", data: {'input_value':$('#testName').val()}, dataType: "html" }).done(function(msg) { // I don''t know what you want to do with a return value... // or if you even want a return value } }); 

and the flask would look like

@app.route("/YourViewName") def example(): list_name = request.args.get("input_value") #if you don't want to change the web page just give a blank return return ""