![]() (If you’re not familiar with CSS selectors take a look at the CSS section in my free Fundamentals of HTML, SVG, CSS and JavaScript for Data Visualization course.) Modifying elements div.item, #my-chart or g:first-child).įor example to select all elements with class item use d3.selectAll('.item'). The string specifies which elements to select and is in the form of a CSS selector string (e.g. ![]() Making selectionsĭ3 has two functions to make selections d3.select and d3.selectAll.ĭ3.select selects the first matching element whilst d3.selectAll selects all matching elements.īoth functions take a string as its only argument. D3 selections also let you perform data joins (see the Data Joins chapter).
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