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Da Feng
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JavaScript in Plain English

Use .env Files As Angular Environment Variables

How to configure .env files to replace Angular’s built in environment.ts files.

3 min readApr 20, 2023

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Use .env Files As Angular Environment Variables

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Da Feng
in
JavaScript in Plain English

NestJS(Axios) Upload File From One Server To Another

Sometimes, we need to get a file posted from the client side and want to re-send the file to another server. This is slightly different…

3 min readJan 12, 2023

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NestJS(Axios) Upload File From One Server To Another

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Da Feng

RXJS Fetch All Paginated Data

A typical use case of expand and reduce operator, with example and explanation provided.

3 min readOct 25, 2022

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RXJS Fetch All Paginated Data

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Da Feng

How To Add Routes Dynamically In Angular

Get more control of routes, make application more flexible.

3 min readSep 25, 2022

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How To Add Routes Dynamically In Angular

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Da Feng

RXJS ShareReplay Explained With Examples

Does ShareReplay ever complete?What will happen if I use ShareReplay with forkJoin operator? How does refCount setting work?

4 min readSep 22, 2022

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RXJS ShareReplay Explained With Examples

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Da Feng

How to use APP_INITIALIZER

Do some interesting things before app starts

4 min readApr 21, 2022

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How to use APP_INITIALIZER

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Da Feng

How To Host Fonts And Icons Locally With Webpack

You might be wondering why we should self-hosting fonts and icons. Isn’t it more common to just link to a public CDN address for fonts and…

6 min readNov 28, 2021

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How To Host Fonts And Icons Locally With Webpack

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Da Feng

Angular Animation programmatically using Animation Builder

Angular animation gives us a way to add animations to our application and make it more fun and straightforward to use. Typically we would…

4 min readNov 1, 2021

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Angular Animation programmatically using Animation Builder

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Da Feng

Angular change detection OnPush with examples

Change detection

4 min readOct 29, 2019

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Angular change detection OnPush with examples

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Da Feng

Da Feng

I am a software developer, write blogs about Typescript, Angular, React, vue, Front-end technologies, also share some of my life stories and good memories here.

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