How do you display a chart in html?
There are many ways to make visual representations of data: bar charts, line graphs, scatter diagrams, sparklines… not to mention the many ways in which you can implement them on the web. In this post I’ll be looking at plain CSS methods for styling data. But before we take a look at some examples, I think it’s worth briefly going over our design goals first. Show Guidelines for Chart MakingThere are three guidelines to developing a chart on the web:
These goals are likely to change depending on the type of chart that make, as performance is going to be less of a concern for a static bar chart than a crazy interactive map. With these guidelines in mind, let’s look at a few examples. CSS Bar ChartsThere are a couple of ways to make a simple bar chart in CSS. For starters we’ll use a definition list for our data:
We’ll absolutely position the text content of each To make the “bars” that visually represent the data, we’ll use pseudo elements. To do that we could update the markup with classes like
But we don’t want to have to write out every single one of these classes by hand because the data is likely to change in the future. We could write a Sass loop to make all those classes for us:
That’s a little icky as it’ll create a whole bunch of classes that we probably won’t be using in the final implementation, but there are lots of tools to tidy this up for us in production. Next, we can add those classes we’ve automatically generated to each
Finally we can add rules to
the background of each
This technique is relatively simple, but I can’t help but think that this information should always be set in a
Unlike the example I used earlier, where I implemented a number of automatically generated helper classes in Sass to define the width of the bar charts, Eric used inline styles on the The example below is my copy of Eric’s original example where I’ve updated the styling a little bit: I really like that each row in the table has a header such as Q1, Q2, etc. — that feels really neat and tidy rather than depending on a definition list to describe the content. They’re easy to position and will fall back nicely to a standard table if the CSS fails to load for whatever reason. However, one of the problems with this approach is that it requires absolutely positioning each table row side by side, which means that if we want to add more data then we’ll need to do a lot more work than simply updating the markup. This means it could be a pain to work with in the future. SparklinesWe don’t always have to use
I’ve updated the original markup from what Wilson used since to me this feels like it should fit into a
That makes a lot more sense to me than a plain Very accessible! Next up we can add styles to that Make sure to hover over each entry in the list to see an expanded version of the diagram that I’ve added. Although it’s not particularly helpful in terms of breaking down the data, it shows that we aren’t stuck with charts in one single representation; manipulating these visualisations with such ease is a great advantage when using simple markup and CSS. CSS Pie ChartsLea Verou recently wrote a great piece about making pie charts. One possibility she suggests is using pseudo elements that cover a circle and nudging them around with
Another possibility is SVG, which has a number of advantages, some of which we’ll list in the next section. If browsers supported Problems with making charts with CSS
Wrapping upPlain CSS and markup solutions for charts and graphs work to a certain extent, and in many situations they’re probably the safest bet. But I think it’s worth exploring alternative solutions to representing data. In the next post in this series I’ll be looking at SVG and JavaScript solutions to making charts. More information
How do you show a chart in HTML?How to Use Chart.. Typical Scatter Chart Syntax: var myChart = new Chart("myChart", { type: "scatter", data: {}, options: {} ... . Typical Line Chart Syntax: var myChart = new Chart("myChart", { type: "line", data: {}, options: {} ... . Typical Bar Chart Syntax: var myChart = new Chart("myChart", { type: "bar", data: {},. How do you draw a graph in HTML?The HTML . The
How do I show a pie chart in HTML?Creating JavaScript Pie Chart. Create an HTML page. The very first thing you need to do is to create a file in which you will put your chart later. ... . Reference all necessary files. The second step is about adding links into the section. ... . Put the data together. ... . Write the chart code.. How do I make a line graph in HTML?To start, we create a basic HTML page with a block element for our line chart. To reference this block element later in the code, we give it an id attribute like “container”. Here, we provide the
with the 100% width and height to render the line chart on the full screen.
|