Watching d3 videos on Youtube...

A nice break from books and websites just for a change I have checked out some Youtube videos.

The are made by d3Vienno and have quite a nice style.

I have just looked at the second video and learned the following:

Looking at the d3 code:

Some really core concepts:

D3 object

Functions or methods

Arguments

Method chaining – methods separated by dots.

<script>

            d3.select(“body”).append(“p”).text(“Hi, what’s up?”);

</script>

d3 is the object - Calling the d3 object

select, append, text are all methods or functions.

Brackets denote the arguments.

Another function

Append – so adding something to the body – in this case paragraph – this is an argument

Then we have the text method specifying the

method and object separated by a dot.

This is method chaining.

Connect selections and the methods we want to perform on that.

Basic methods in d3

select – selecting elements

append – add elements

A comment about the consol – in Chrome.