📅 最后修改于: 2023-12-03 15:03:00.433000 🧑 作者: Mango
MometJS is a modular and extensible Javascript library for building reactive user interfaces. It provides a reactive programming model that allows developers to declaratively define how the UI should react to changes in the application state.
To install MometJS, run the following command:
npm install mometjs
To get started with MometJS, create a new project and add the following code to your index.html file:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>MometJS Example</title>
</head>
<body>
<div id="app"></div>
<script src="app.js"></script>
</body>
</html>
Create a new app.js file and add the following code:
import { createApp } from 'mometjs';
const app = createApp({
data() {
return {
message: 'Hello, MometJS!',
};
},
});
app.mount('#app');
This defines a new MometJS application with a single root component that displays a message. The createApp function takes an object as an argument, which defines the root component and its associated data.
Next, run the following command to build and run the application:
npx mometjs-cli serve
This will start a development server at http://localhost:3000/.
Components are the building blocks of MometJS applications. They encapsulate the UI and behavior of a part of the application, allowing developers to create reusable and modular code.
To create a new component, use the createComponent function:
import { createComponent } from 'mometjs';
const MyComponent = createComponent({
name: 'MyComponent',
props: {
message: String,
},
template: '<div>{{ message }}</div>',
});
This defines a new component called MyComponent that accepts a message prop and displays it in a div element.
To use this component in another component or in the root component, import it and add it to the components option:
import { createComponent, createApp } from 'mometjs';
const MyComponent = createComponent({
name: 'MyComponent',
props: {
message: String,
},
template: '<div>{{ message }}</div>',
});
const App = createComponent({
name: 'App',
components: {
MyComponent,
},
data() {
return {
message: 'Hello, MometJS!',
};
},
template: '<div><MyComponent :message="message" /></div>',
});
const app = createApp(App);
app.mount('#app');
This defines a new root component called App that uses the MyComponent component to display the message.
MometJS provides a reactive programming model based on the Observer pattern. This allows developers to declaratively define how the UI should react to changes in the application state.
To define reactive data, use the data function in the component options:
import { createComponent } from 'mometjs';
const MyComponent = createComponent({
name: 'MyComponent',
data() {
return {
message: 'Hello, MometJS!',
};
},
template: '<div>{{ message }}</div>',
});
This defines a reactive data property called message that can be used in the template.
To update the application state, use the set method:
import { createComponent } from 'mometjs';
const MyComponent = createComponent({
name: 'MyComponent',
data() {
return {
message: 'Hello, MometJS!',
};
},
template: '<div><input type="text" @input="updateMessage" /><div>{{ message }}</div></div>',
methods: {
updateMessage(event) {
this.set({ message: event.target.value });
},
},
});
This updates the message property with the value of the input field whenever the user types something.
MometJS provides a simple routing system that allows developers to define routes and associated components.
To define a route, use the createRouter function:
import { createRouter } from 'mometjs';
const router = createRouter({
routes: [
{
path: '/',
component: Home,
},
{
path: '/about',
component: About,
},
],
});
This defines a new router with two routes: the home page (/) and the about page (/about).
To use the router in the root component, import it and add it to the component options:
import { createComponent, createApp } from 'mometjs';
import { createRouter } from 'mometjs';
const Home = createComponent({
name: 'Home',
template: '<h1>Home Page</h1>',
});
const About = createComponent({
name: 'About',
template: '<h1>About Page</h1>',
});
const router = createRouter({
routes: [
{
path: '/',
component: Home,
},
{
path: '/about',
component: About,
},
],
});
const App = createComponent({
name: 'App',
components: {
Home,
About,
},
template: '<div><router-view /></div>',
});
const app = createApp(App);
app.use(router);
app.mount('#app');
This defines a new root component called App that uses the router-view component to display the current route component.
MometJS provides a state management system based on the Flux architecture. This allows developers to define a central store that holds the application state and dispatch actions that modify it.
To define a new store, use the createStore function:
import { createStore } from 'mometjs';
const store = createStore({
state: {
count: 0,
},
mutations: {
increment(state) {
state.count += 1;
},
},
actions: {
increment({ commit }) {
commit('increment');
},
},
});
This defines a new store with a state property called count and a increment mutation that increments it by one.
To use the store in a component, import it and add it to the component options:
import { createComponent } from 'mometjs';
import { useStore } from 'mometjs';
const MyComponent = createComponent({
name: 'MyComponent',
template: '<div>{{ count }}</div>',
setup() {
const store = useStore();
return {
count: store.state.count,
};
},
});
This uses the useStore composition function to access the store and define a reactive count property that can be used in the template.
To dispatch an action, use the dispatch method:
import { createComponent } from 'mometjs';
import { useStore } from 'mometjs';
const MyComponent = createComponent({
name: 'MyComponent',
template: '<div><button @click="increment">Increment</button><div>{{ count }}</div></div>',
setup() {
const store = useStore();
function increment() {
store.dispatch('increment');
}
return {
count: store.state.count,
increment,
};
},
});
This defines a new method called increment that dispatches the increment action when the button is clicked.
MometJS provides server-side rendering support through the createServerApp function. This allows developers to render the initial HTML on the server and improve the application's SEO and performance.
To create a new server application, use the createServerApp function:
import { createServerApp } from 'mometjs';
const app = createApp({
data() {
return {
message: 'Hello, MometJS!',
};
},
});
const serverApp = createServerApp(app);
This defines a new server application that uses the same root component as the client application.
To render the application, use the renderToString function:
import { renderToString } from 'mometjs/server';
const html = await renderToString(serverApp);
This renders the application to a string that can be sent to the client.
MometJS is highly modular and extensible, allowing developers to easily add new features and functionality.
To create a new plugin, use the createPlugin function:
import { createPlugin } from 'mometjs';
const MyPlugin = createPlugin({
install(app) {
app.directive('my-directive', (el, binding) => {
el.textContent = binding.value;
});
},
});
const app = createApp({
template: '<div v-my-directive="message"></div>',
plugins: [
MyPlugin,
],
});
app.mount('#app');
This defines a new plugin called MyPlugin that adds a new directive called my-directive that sets the element's text content to the value of the binding.
To use the plugin in the root component, add it to the plugins option.
MometJS is a powerful and flexible Javascript library that provides a reactive programming model, virtual DOM, components, routing, state management, server-side rendering, and extensibility. With MometJS, developers can easily build reactive user interfaces that are modular and easy to maintain.