D3.js vs Vue.js examples
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<!--
Links:
Object attr: https://www.w3schools.com/xml/dom_attribute.asp
Scopes css: https://github.com/vuejs/vue-loader/blob/master/docs/en/features/scoped-css.md
.vue files: https://vuejs.org/v2/guide/single-file-components.html
D3.append: https://github.com/d3/d3-selection/blob/master/src/selection/index.js
Installation of SASS tutorial: https://www.youtube.com/watch?v=fIpLr04f8Ms
SASS: http://sass-lang.com/guide
-->
<template>
<svg width="500" height="300"></svg>
</template>
<script>
const d3 = require('d3');
export default {
mounted: function() {
var svg = d3.select(this.$el);
var width = +svg.attr('width');
var height = +svg.attr('height');
var data = [
{name: 'one', val: 100},
{name: 'two', val: 150},
{name: 'three', val: 200}
];
var x = d3.scaleBand()
.rangeRound([0, width]).padding(0.1)
.domain(data.map(d => d.name));
var y = d3.scaleLinear()
.rangeRound([height * 0.3 - 20, 0])
.domain([0, d3.max(data, d => d.val)])
function addRectsWithName(elem, name) {
elem
.append('text')
.text(name)
.attr('x', width / 2)
.attr('y', 5)
.attr('text-anchor', 'middle');
elem.selectAll('rect')
.data(data)
.enter()
.append('rect')
// We add attr here
.attr('x', d => x(d.name))
.attr('class', d => d.name)
.attr('y', d => y(d.val))
.attr('width', x.bandwidth())
.attr('height', d => y.range()[0] - y(d.val))
}
svg
.append('g')
.attr('id', 'bars-style')
.attr('transform', `translate(0, 20)`)
.call(addRectsWithName, 'Basic styles');
// vue loader will substitute data attribute for styles
var STYLE_MODULE_NAME = this.$el.attributes[0].name;
svg
.append('g')
.attr('transform', `translate(0, ${height * 0.3 + 20})`)
.call(addRectsWithName, 'Scoped styles')
.selectAll('rect')
.attr(STYLE_MODULE_NAME, '')
svg
.append('g')
.attr('id', 'bars-style-sass')
.attr('transform', `translate(0, ${height * 0.6 + 20})`)
.call(addRectsWithName, 'Sass styles');
}
}
</script>
<style>
#bars-style .one {
fill: #ffc300
}
#bars-style .two {
fill: #c70039
}
#bars-style .three {
fill: #571845
}
</style>
<style scoped>
.one {
fill: #154890
}
.two {
fill: #e1d4c0
}
.three {
fill: #ff6600
}
</style>
<style lang="sass">
#bars-style-sass
.one
fill: #AA5C39
.two
fill: #5B9632
.three
fill: #2A4F6E
</style>