Flask loading icon on page load-CodePudding

from flask import Flask, render_template, Response, request, redirect, url_for

app = Flask(__name__)
app.config['TEMPLATES_AUTO_RELOAD'] = True



@app.route("/", methods=["POST", "GET"])
def index():
    if request.method == "POST":
        return render_template("index.html")
        
        
if __name__ == '__main__':
    app.run(debug=True)

<html>
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>



<style> 
  div#loading {
    width: 50px;
    height: 50px;
    display: none;
    background: url('https://i.giphy.com/3oEjI6SIIHBdRxXI40.gif') center no-repeat;
    cursor: wait;
    padding-left:100%;
    }  
</style>
</head>
  
<body>
<form method="POST">
    <input type="text">
    <button type="submit" onclick="loading();">
      <div id="loading"></div>
      <div id="content">
        <i ></i>
      </div>
    </button> 
</form>

<script type="text/javascript">
  function loading(){
      $("#loading").show();
      $("#content").hide();       
  }
</script>
</body>
</html>

I'm building a Flask app, where when you press a button, a loader should replace the search glass icon with a loading gif.

At the moment, the gif isn't appearing upon clicking the button.

When I remove display:none from the loading style, the gif appears, so I know it's there.

CodePudding user response：

You are using JQuery to show and hide the elements, but you have not included it in the template.

So include a script tag like

<script
  src="https://code.jquery.com/jquery-3.6.0.min.js"
  integrity="sha256-/xUj 3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
  crossorigin="anonymous"></script>

before the script tag where you're referencing JQuery

CodePudding user response：

I figured I already had a div id = content and so it was removing the entire div. Remember to check your IDs!