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Tag: javascript

How to subscribe to object changes?

I wonder how to subscribe to the changes of a JavaScript object e.g. like Redux does. I read through a lot of JS documentations but I couldn’t find a non-deprecated way to handle this problem (Object.protype.watch() as well as Object.observe() are deprecated). Moreover I read a few Stackoverflow questio…

Fetch request to local file not working

I’m trying to make a request in a local file, but I don’t know when I try to do on my computer show me an error. Is possible make a fetch to a file inside your project? Answer I was encountering the same error and there are two changes I made in my code to get rid of the error.

Repeating a watermark on every print page? Javascript or css

So, I have this Invoice page. and i am adding a watermark behind the page. i need to repeat the watermark for each page that would be printed. The problem is that, I don’t know how many pages would there be. there could be any number of pages. I need to show watermark behind every page. These images are…

Phong and Gouraud Shading WebGL

I read that that in Gouraud Shading, the color for the fragment is computed in the Vertex Shader. Whereas, in Phong Shading, the color for the fragment is computed in the Fragment Shader. In this implementation , which of these are we using ? I did not understand exactly the difference between them. Could any…

Babel not transpiling arrow functions (Webpack)

When running webpack, and babel, the resulting bundle.js still contains arrow functions. This gives me a Syntax Error when running in Internet Explorer 10. I would like babel to replace the arrow functions with normal functions that IE can run. My package.json has the following devDependencies: My webpack.con…

Unable to run Electron Quick Start in WSL

Hi I’m running Ubuntu 16.04.3 LTS on Windows Subsystem Linux. I’m trying to run the Quick Start first app as listed in this section here https://electronjs.org/docs/tutorial/first-app however, I keep getting the same error no matter if I clone the repository, write it myself, or delete and reinsta…

Merging Javascript arrays without concat

I have two arrays that I need to combine. Most of the advice on combining arrays I can find use concat. But I don’t want to add to the end of an array, I need to add a key/value pair from array1 to each object in array2. I need to merge this array1: With this array2: In a new combined