I am trying to access a certain member in a JavaScript object. In order to do this, I need to try out a couple of key values. For example, Object[‘text/html’] which will give me an export link for a HTML document. However, not every object of this type will have a text/html key pair value. In Python I would solve
Tag: python
How to read and write JSON offline on local machine?
Problem I need a way to store and collect JSON data in an entirely offline(!) web application, hosted on a local (shared) machine. Several people will access the app but it will never actually be online. I’d like the app to: Read and write JSON data continuously and programmatically (i.e. not using a file-upload type schema) Preferably not require any
Flask url_for URLs in Javascript
What is the recommended way to create dynamic URLs in Javascript files when using flask? In the jinja2 templates and within the python views url_for is used, what is the recommended way to do this in .js files? Since they are not interpreted by the template engine. What basically want to do is: Which is not possible. But naturally, I
Convert Python None to JavaScript null
In a Django view I am generating a data set something like this: I am passing this data to a JavaScript variable using: For use in a High Charts script. Unfortunately JavaScript is stumbling when it encounters the None value because actually what I need is null. How can I best replace None with null, and where should I handle
Reference error while including .js in .html in ubuntu using flask
I am trying to include a str.js and jit.js file in nev.html. Both are in same directories but it is giving me a reference error: flask file in flask/app1.py When I run it using flask, it gives this error: directory structure /flask/templates directory structure /flask str.js file nev.html Answer Keep css and js in a folder under ‘static’ folder in
Equivalent JavaScript functions for Python’s urllib.parse.quote() and urllib.parse.unquote()
Are there any equivalent JavaScript functions for Python’s urllib.parse.quote() and urllib.parse.unquote()? The closest I’ve come across are encodeURI()/encodeURIComponent() and escape() (and their corresponding un-encoding functions), but they don’t encode/decode the same set of special characters as far as I can tell. Answer OK, I think I’m going to go with a hybrid custom set of functions: Encode: Use encodeURIComponent(), then
Django Template Variables and Javascript
When I render a page using the Django template renderer, I can pass in a dictionary variable containing various values to manipulate them in the page using {{ myVar }}. Is there a way to access the same variable in Javascript (perhaps using the DOM, I don’t know how Django makes the variables accessible)? I want to be able to
Is there a benefit to defining a class inside another class in Python?
What I’m talking about here are nested classes. Essentially, I have two classes that I’m modeling. A DownloadManager class and a DownloadThread class. The obvious OOP concept here is composition. However, composition doesn’t necessarily mean nesting, right? I have code that looks something like this: But now I’m wondering if there’s a situation where nesting would be better. Something like: