JavaScript raises SyntaxError with data rendered in Jinja template

Question

I am trying to pass data as JSON from a Flask route to a Jinja template rendering JavaScript. I want to iterate over the data using JavaScript. The browser shows Syn

Answer 1

The problem is that your server returns not JSON, but rendered HTML, which escapes some of the symbols with & notation.

Instead of using

return render_template("folder.html", data=tree)

try

return flask.jsonify(**tree)