How to select all types of child element inside an svg using d3.js?

@wilmer.lemke 

To select all child elements inside an SVG using D3.js, you can use the .selectAll() method along with the CSS selector for SVG elements *. This will select all child elements regardless of their type.

Here's an example:

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// Select the SVG element
var svg = d3.select("svg");

// Select all child elements inside the SVG
var childElements = svg.selectAll("*");

// Apply some styling to the selected elements
childElements.style("fill", "red");

In this example, the svg.selectAll("*") selects all child elements inside the SVG. You can then apply styling or perform other operations on these selected elements.

Note that the selectAll() method in D3.js returns a selection, which allows you to chain other methods like style(), attr(), transition(), etc. to manipulate the selected elements.