Tips for Displaying Multiline Text Tooltips in D3 JS Bar Charts

I'm trying to figure out how to include multiline text in a single box tooltip using d3.v3.min.js. The behavior I want is as follows:

Here is the code I have created:

HTML, CSS, Javascript

function responsivefy(svg) {
    // implementation goes here
}

// more code snippets...


body{
    font-family: "Arial", sans-serif;
}
.bar{
    fill: #c0c0c0;
}
.bar:hover{
    fill:rgb(95, 109, 148);
}
.bar2nd{
    fill:#00315b;
}
.bar2nd:hover{
    fill:#3e73b8;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.17/d3.min.js"></script>

Can anyone provide assistance with my issue? I'm specifically looking for help with incorporating multiline text into tooltips.

htmlcssd3.jssvg

Answer №1

If you want to simplify the process of adding tooltips, consider using div elements instead of svg rectangles. You can achieve this by including the following code snippet:

var tooltip = d3.select("body").append("div")
    .attr("class", "tooltip")
.style("opacity", 0);

By incorporating this into your code, you'll be able to show and hide the tooltip easily and even include multi-line text with the following approach:

.on("mouseover", function(d){
        var xPos = d3.mouse(this)[0];
        var yPos = d3.mouse(this)[1];
        tooltip.style("left", xPos + "px")
                .style("top", yPos + "px")
            .html("<p class='tooltip'>" + d.category + "<br><br>Line 2<br><br>Etc</p>")
            .transition().delay(200).style("opacity", 0.9);
    })
    .on("mouseout", function(){
       tooltip.transition().delay(0).style("opacity", 0);
    })

To maintain the same visual styling as before, you can utilize CSS properties like so:

div.tooltip {
    width: 200px;
    height: 125px;
    background-color: white;
    border: 1px solid #969696;
    position: absolute;
}

p.tooltip {
    font-size: 18;
    font-weight: bold;
    padding-left: 10px;
}

I've created a simulation on JSFiddle here - if some parts of your code are missing, I apologize, but it should give you an idea of how to incorporate it. Feel free to ask if you have any questions! For additional guidance, you can refer to this resource as well.

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