前端 html input标签 的placeholder属性 标签上显示内容
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <div style="width: 600px;margin: auto"> <input type="text" placeholder="请输入关键字"> </div> </body> </html>
一输入文本内容 没有了
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="x-ua-compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Title</title> </head> <body> <div> <form> <div> <label for="user">用户名:</label> <input id="user" name="username" type="text" placeholder="请输入用户名"> </div> <div> <label for="pwd">密码:</label> <input id="pwd" name="password" type="password" placeholder="请输入密码"> </div> </form> </div> </body> </html>
