--description--

D3 lets you label a graph element, such as a bar, using the SVG text element.

Like the rect element, a text element needs to have x and y attributes, to place it on the SVG. It also needs to access the data to display those values.

D3 gives you a high level of control over how you label your bars.

--instructions--

The code in the editor already binds the data to each new text element. First, append text nodes to the svg. Next, add attributes for the x and y coordinates. They should be calculated the same way as the rect ones, except the y value for the text should make the label sit 3 units higher than the bar. Finally, use the D3 text() method to set the label equal to the data point value.

Note: For the label to sit higher than the bar, decide if the y value for the text should be 3 greater or 3 less than the y value for the bar.

--hints--

The first text element should have a label of 12 and a y value of 61.

assert.strictEqual(document.querySelectorAll('text')[0]?.textContent, '12');
assert.strictEqual(
  document.querySelectorAll('text')[0]?.getAttribute('y'),
  '61'
);

The second text element should have a label of 31 and a y value of 4.

assert.strictEqual(document.querySelectorAll('text')[1]?.textContent, '31');
assert.strictEqual(
  document.querySelectorAll('text')[1]?.getAttribute('y'),
  '4'
);

The third text element should have a label of 22 and a y value of 31.

assert.strictEqual(document.querySelectorAll('text')[2]?.textContent, '22');
assert.strictEqual(
  document.querySelectorAll('text')[2]?.getAttribute('y'),
  '31'
);

The fourth text element should have a label of 17 and a y value of 46.

assert.strictEqual(document.querySelectorAll('text')[3]?.textContent, '17');
assert.strictEqual(
  document.querySelectorAll('text')[3]?.getAttribute('y'),
  '46'
);

The fifth text element should have a label of 25 and a y value of 22.

assert.strictEqual(document.querySelectorAll('text')[4]?.textContent, '25');
assert.strictEqual(
  document.querySelectorAll('text')[4]?.getAttribute('y'),
  '22'
);

The sixth text element should have a label of 18 and a y value of 43.

assert.strictEqual(document.querySelectorAll('text')[5]?.textContent, '18');
assert.strictEqual(
  document.querySelectorAll('text')[5]?.getAttribute('y'),
  '43'
);

The seventh text element should have a label of 29 and a y value of 10.

assert.strictEqual(document.querySelectorAll('text')[6]?.textContent, '29');
assert.strictEqual(
  document.querySelectorAll('text')[6]?.getAttribute('y'),
  '10'
);

The eighth text element should have a label of 14 and a y value of 55.

assert.strictEqual(document.querySelectorAll('text')[7]?.textContent, '14');
assert.strictEqual(
  document.querySelectorAll('text')[7]?.getAttribute('y'),
  '55'
);

The ninth text element should have a label of 9 and a y value of 70.

assert.strictEqual(document.querySelectorAll('text')[8]?.textContent, '9');
assert.strictEqual(
  document.querySelectorAll('text')[8]?.getAttribute('y'),
  '70'
);

--seed--

--seed-contents--

html

<body>
  <script>
    const dataset = [12, 31, 22, 17, 25, 18, 29, 14, 9];

    const w = 500;
    const h = 100;

    const svg = d3
      .select('body')
      .append('svg')
      .attr('width', w)
      .attr('height', h);

    svg
      .selectAll('rect')
      .data(dataset)
      .enter()
      .append('rect')
      .attr('x', (d, i) => i * 30)
      .attr('y', (d, i) => h - 3 * d)
      .attr('width', 25)
      .attr('height', (d, i) => 3 * d)
      .attr('fill', 'navy');

    svg.selectAll('text').data(dataset).enter();
    // Add your code below this line




    // Add your code above this line
  </script>
  <body></body>
</body>

--solutions--