Add a Tooltip to a D3 Element

Add a Tooltip to a D3 Element
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#1

Tell us what’s happening:
I’m trying to call the text() method with a callback function so the text displays the data value…
Help.

Your code so far


<style>
  .bar:hover {
    fill: brown;
  }
</style>
<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) => d * 3)
       .attr("fill", "navy")
       .attr("class", "bar")
       // Add your code below this line
       .append("title")
       .text("title",dataset)
       
       // Add your code above this line
    
    svg.selectAll("text")
       .data(dataset)
       .enter()
       .append("text")
       .text((d) => d)
       .attr("x", (d, i) => i * 30)
       .attr("y", (d, i) => h - (d * 3 + 3))   
    
  </script>
</body>

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/data-visualization/data-visualization-with-d3/add-a-tooltip-to-a-d3-element


#2

.text(“title”,dataset)

Here you’re supposed to assign the value but you’re assigning a string^^
You might want to look at the code below in the challenge, where it assign the text to the labels - it’s the exact same thing^^

I’ll blur the solution here but try to solve it by yourself ( once understood will be an easy task):

.append('title')
.text( d => d)