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HTML

              
                <div id="app"></div>
              
            
!

CSS

              
                
              
            
!

JS

              
                // Parent component
var app = new Reef('#app', {
    data: {
        greeting: 'Hello, world!',
        todos: [
            'Buy milk',
            'Bake a birthday cake',
            'Go apple picking'
        ]
    },
    template: function (props) {
        return `
            <h1>${props.greeting}</h1>
            <div id="todos"></div>`;
    }
});

// Nested component
var todos = new Reef('#todos', {
    data: app.data,
    template: function (props) {
        return `
            <h2>Todo List</h2>
            <ul>
                ${props.todos.map(function (todo) {
                    return `<li>${todo}</li>`;
                }).join('')}
            </ul>`;
    }
});

// Render your app
// Todos must be manually rendered because they're not attached
app.render();
todos.render();

// After three seconds, update app state
// todos get wiped out because they're a nested component but not attached to their parent
window.setTimeout(function () {
    app.data.greeting = 'Hi, universe!';
}, 3000);

// After three more seconds, attach todos to their parent and update state again
// todos will get properly rendered because they're now attached
window.setTimeout(function () {
    app.attach(todos);
    app.data.greeting = 'Hi, universe! 👋';
}, 6000);
              
            
!
999px

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