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Writing Single Page Application With Nim 👑

ethosa

Ethosa

Posted on May 9, 2023

Writing Single Page Application With Nim 👑

Why Nim 🤔

Nim is powerful programming language that compiles into C, Cpp, ObjC and JS (what we need).

You can install it here

HappyX ✨

HappyX is an asynchronous web framework, written in Nim.
Source code
We'll work with it.

nimble install happyx
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Getting Started 👔

You should create project. Choose project name and mark project type as SPA.

hpx create
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You should move into project folder after this.

cd PROJECT_NAME
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Development 🛠

Let's launch project.

hpx dev --reload
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The dev command will hosts our project at localhost:5000.
Flag --reload will checks all changes in project.

Also you can use flags --host=0.0.0.0 and --port:1234 💡

Now you can change anything and see result in opened web page! 🙂

Let's change main.nim. For it you should open src/ folder and open main.nim file. You will see

import
  happyx,  # import main library
  components/[hello_world]  # import components

# Binds single page application to element with id "app"
# In our case - <div id="app"></div>
# Command `hpx create` reproduce all need files
appRoutes("app"):
  "/":  # Route our app
    component HelloWorld  # It is a component usage
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Try to change "/" route

"/":
  component HelloWorld
  tButton:  # tButton will reproduce <button> tag
    "Click me!"  # This will reproduce only text
    @click: # This will handle button clicks
      # Here you can use real Nim code 💡
      # As example you can write in browser console
      echo "Clicked!"
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OK, save it and see result! 🙂

Component Development 🛠

Move into src/components/ folder. Here automatically created component hello_world.nim

import happyx  # Import main library

# component declaration
component HelloWorld:
  `template`:  # HTML part 📕
    # Here you can write HTML
    "Hello, world!"

  `script`:  # Script part, optionally 🛠
    # Here you can use real Nim code 💡
    echo "Start coding!"

  # Also can be `style` part with component styles 🎴
  # `style`:
  #   """
  #   div {
  #     background: gray;
  #   }
  #   """
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That's all! Good Luck! 🙂

Also you can read about API in Nim

💖 💪 🙅 🚩
ethosa
Ethosa

Posted on May 9, 2023

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