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Data Visualization with D3 4.x Cookbook - Second Edition
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It is very common that at times you will need to select a single element on a page to perform some visual manipulation. This recipe will show you how to perform a targeted single element selection in D3 using a CSS selector.
Open your local copy of the following file in your web browser:
https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter2/single-selection.html .
Let's select something (a paragraph element perhaps) and produce the classic hello world on screen.
<p id="target"></p> <!-- A -->
<script type="text/javascript">
d3.select("p#target") // <-- B
.text("Hello world!"); // <-- C
</script>
This recipe simply produces text Hello world! on your screen.
The d3.select command is used to perform a single-element selection in D3. This method accepts a string that represents a valid CSS3 selector or an element object...