<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title> JavaScript DOM getElementsByName() Method </title> </head> <body> Samsung: <input name="Smartphone" type="checkbox" value="Samsung"> OnePlus: <input name="Smartphone" type="checkbox" value="OnePlus"> <p>Click the button to check all checkboxes that have a name attribute with the value "Smartphone".</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { var x = document.getElementsByName("Smartphone"); var i; for (i = 0; i < x.length; i++) { if (x[i].type == "checkbox") { x[i].checked = true; } } } </script> </body> </html>
