How do I send a python variable over to javascript? The python is a cgi script?

Question

I have a javascript file where I am trying to set a variable using data sent from a python cgi script.

I am trying to use the ajax get method, and setting the variable within that method. Here is how I am doing it in the javascript.

$.get('cgi-bin/populate_usernames.py', function(data) {
    users = data
});

console.log(users)

In the python code, I have the following:

#!/usr/bin/python
import os

data = ["Bob", "Jim"]

For some reason, the console log fails because users is undefined. I think it is because the content type is incorrect for data. Is there a way for me to send a JSON array from the python code so that users has the correct contents of Jim and Bob?

$.get is asynchronous. You will have to put the console.log(users) inside the { } of the callback you pass to $.get. — Olian04
– Olian04, Commented Jun 27, 2019 at 19:00

Alex · Accepted Answer · 2019-06-27 20:14:56Z

2

For simple data structures like lists, you can use an external standard like JSON to pass information between two languages.

import json
data = ["Bob", "Jim"]
json_string = json.dumps(data)

Then pass the json string to the javascript environment in whatever way is possible in your application.

answered Jun 27, 2019 at 20:14

Alex

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1 Comment

niketp Over a year ago

I figured out that I have to send a JSON object. The main problem is how do I send the json string over to the javascript environment.

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