Escape strings for JavaScript using Jinja2?

Question

How do I escape HTML with Jinja2 so that it can be used as a string in JavaScript (jQuery)?

If I were using Django\'s templating system I could write:

$(         


        

Answer 1

I just researched this problem, my solution is to define a filter:

from flask import Flask, Markup
app = Flask(__name__)
app.jinja_env.filters['json'] = lambda v: Markup(json.dumps(v))

and in the template:

This has the nice feature that myvar can be anything that can be JSON-serialised