javascript-d3How can I use JavaScript, D3, and Svelte together with D3.js?

Using JavaScript, D3, and Svelte together with D3.js is a great way to create dynamic, interactive, and responsive web applications. D3.js is a powerful JavaScript library for manipulating documents based on data. Svelte is a modern JavaScript compiler that allows developers to write efficient and expressive code.

The following example code uses D3.js to create a bar chart and Svelte to render it:

<script>
  import * as d3 from 'd3';

  let data = [10, 20, 30, 40, 50];

  let svg = d3.select('svg');

  svg.selectAll('rect')
    .data(data)
    .enter()
    .append('rect')
    .attr('x', (d, i) => i * 25)
    .attr('y', 0)
    .attr('width', 25)
    .attr('height', d => d);
</script>

<svg></svg>

This code creates a bar chart with five bars with heights of 10, 20, 30, 40, and 50.

Code explanation

1. import * as d3 from 'd3'; - imports the D3 library
2. let data = [10, 20, 30, 40, 50]; - creates an array of data to be used in the bar chart
3. let svg = d3.select('svg'); - selects the SVG element to be used for the chart
4. svg.selectAll('rect') - selects all rect elements in the SVG
5. .data(data) - binds the data to the rect elements
6. .enter() - creates new rect elements for each data point
7. .append('rect') - appends the rect elements to the SVG
8. .attr('x', (d, i) => i * 25) - sets the x coordinate of each rect element
9. .attr('y', 0) - sets the y coordinate of each rect element
10. .attr('width', 25) - sets the width of each rect element
11. .attr('height', d => d) - sets the height of each rect element based on the data

Helpful links

• D3.js
• Svelte

Edit this code on GitHub