当需要多行输入时，将使用textarea。您可以尝试运行以下代码以在Bootstrap表单中使用textarea
<!DOCTYPE html> <html> <head> <title>Bootstrap Forms</title> <meta name = "viewport" content="width = device-width, initial-scale = 1"> <link rel = "stylesheet" href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css"> <script src = "https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script> <script src = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> </head> <body> <form role = "form"> <div class = "form-group"> <label for = "name">Player</label> <input type = "text" class = "form-control" placeholder = "Player Name"> </div> <div class = "form-group"> <label for = "name">Rank</label> <input type = "text" class = "form-control" placeholder = "Player Rank"> </div> <div class = "form-group"> <label for = "name">Player Details</label> <textarea class = "form-control" rows = "3" placeholder = "Player Details"></textarea> </div> </form> </body> </html>