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<!doctype html> <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8"/> <script src="https://d3js.org/d3.v4.min.js"></script> <style> .myclass{ color:red } </style> </head> <body> <p class="myclass ">First paragraph</p> <p>Second paragraph</p> <p class="myclass ">Third paragraph</p> <script> d3.selectAll(".myclass ").style('color','green'); </script> </body> </html>
Result: