Asking for help, clarification, or responding to other answers. possible to render data into the JavaScript that will run. To send data to the server we can use a form tag. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. Not the answer you're looking for? The following example shows how to replace a In C, why limit || and && to evaluate to booleans? In Google Maps I'm just setting. rev2022.11.3.43005. If We will also learn how to use the Postman Chrome extension to send JSON data. 12. Why does Google prepend while(1); to their JSON responses? Flask-Meld ( PyPI package information ) allows you to write your front end web code in your back end Python code. Press J to jump to the feed. How can I remove a specific item from an array? It seems that the currently accepted answer (by @BrettJ) has a possible security flaw in it: if the object we pass to javascript has some string with a single quote inside, this single quote will not be escaped by json.dumps, thus allowing to inject arbitrary code into javascript.It is better to use Flask's tojson() template filter, see the docs, as it makes proper escaping of all . The most common types for data are form data or JSON data. Not the answer you're looking for? Why can we add/substract/cross out chemical equations for Hess law? when generating URLs from JavaScript. How can I change an element's class with JavaScript? First, you need to know the URL to request. You can return the data directly: You can also return it with a status code: You can append the data to the response like this: The response data content type is defined by mimetype parameter. tojson() filter in a