javascript flask how to call a python function code example

Example 1: call javascript function flask

if ("False" == "True")

Example 2: call javascript function flask

from flask import Flask, render_template

app = Flask(__name__)


@app.route('/', methods=['GET', 'POST'])
def upload_file():
    if request.method == 'POST':
        #verify if the file is valid
        #here invoke js to do something (for example flash("test"))
        return render_template('upload.html', flash_message="True")

    return render_template('upload.html', flash_message="False")

Example 3: call javascript function flask

if ("True" == "True")

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Javascript Example

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