call javascript function flask

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showing results for - "call javascript function flask"
Lou
01 Aug 2017
1<!DOCTYPE html>
2<html lang="en">
3<head>
4  <meta charset="UTF-8">
5  <title>Upload new File</title>
6</head>
7<body onload="flashMessage()">
8  <script>
9    function flashMessage() {
10      if ("{{ flash_message }}" == "True") {
11        alert("[YOUR_MESSAGE_HERE]");
12      }
13    }
14  </script>
15
16  <h1>Upload new File</h1>
17  <form method=post enctype=multipart/form-data>
18    <input type=file name=file>
19    <input type=submit value=Upload>
20  </form>
21</body>
22</html>
source
Muhammad
15 May 2017
1from flask import Flask, render_template
2
3app = Flask(__name__)
4
5
6@app.route('/', methods=['GET', 'POST'])
7def upload_file():
8    if request.method == 'POST':
9        #verify if the file is valid
10        #here invoke js to do something (for example flash("test"))
11        return render_template('upload.html', flash_message="True")
12
13    return render_template('upload.html', flash_message="False")
14
source
Anna
27 Jan 2018
1if ("True" == "True")
2
source
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