Steve Addington Steve Addington - 3 years ago 169
jQuery Question

How can I get live feedback from my backend?

I am using a POST jQuery request on the client side. This post request starts a function. When the function is finished (putting some stuff in a mongodb) I want that the client updates the data on the website without the user needing to refresh.

Can you guys give me any ideas how to do that? I just don't even know how to approach it or how to Google it :/

My stack is: Nodejs, Express, EJS, MongoDB and jQuery

Answer Source
  • You need to construct an AJAX request, which you already have
  • Then inside your backend when your mentioned function finishes processing the clients request and writing it to the database you need to send it back to the client using res.json'/whatever_endpoint_you_are_using', function(req, res, next) {
      // code for processing the response & writing stuff to the database
      // then send the data back to the client
        res.json({"data": your_data});   
  • Then you can access this data on the client, inside of the success callback of your AJAX request

    success: function(response){
       console.log( // your_data
  • Lastly, you can use JS or jQuery to add this data to the DOM (you mentioned you're using jQuery so here's a jQuery example)

    // or something similar I don't know how your page is structured
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