<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> </head> <body> <div class='triangle'></div> <script> var triangle = document.querySelector('.triangle'); // 补全代码 triangle.innerHTML = ` *<br>**<br>***<br> ` </script> </body> </html>
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> </head> <body> <div class='triangle'></div> <script> var triangle = document.querySelector('.triangle'); // 补全代码 triangle.innerHTML = ` *<br>**<br>***<br> ` </script> </body> </html>