JSFiddle - React, Tailwind, and code Playground

by rich_harris

HTML

<main></main>

<script id='template' type='text/ractive'>
    <p>textX: {{textX}}</p>
</script>

CSS

body {
    font-family: 'Helvetica Neue', arial, sans-serif;
    font-weight: 200;
    color: #353535;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 200;
}

.error {
    color: #d00;
    font-family: monospace;
}

JavaScript

var ractive = new Ractive({
    el: 'main',
    template: '#template',
    data: {
        width: 1000,
        topLeft: { x: 0, y: 0 },
        topRight: { x: 0, y: 0 }
    },
    computed: {
        hasHeadroom () {
            return this.get( 'width' ) > 800;
        },
            
        textX () {
            console.log( 'calculating textX' )
				return this.get( 'hasHeadroom' ) ?
					( this.get( 'topLeft.x' ) + this.get( 'topRight.x' ) ) / 2 :
					this.get( 'topRight.x' ) + 10;
        }
    }
});

ractive.set( 'topLeft', { x: 100 });