我最近创建了一个网页，让我学习更多关于HTML的知识，并且找到了'required'属性。我将它添加到了字段中，但它没有做任何事情。
I recently created a web page for me to learn more about HTML, and I found the 'required' attribute. I added it to the fields, but it didn't do anything.
任何人都可以告诉我我的 required 属性的错误吗？
Can anyone tell me my mistake for 'required' attribute?
当字段为空时，我希望它说请填写此字段
I want it to say "Please fill this field" when the field is empty
<html> <head> <link href="icon.ico" rel="icon"> <title>Log In</title> </head> <body> <h1 align="center">Welcome to site</h1> <hr width="50%"/> <br/> <table align="center"> <form> <tr> <td>Log In : </td> <td><input type="text" name="LogInEmail" placeholder="Enter your email" required></td> </tr><tr> <td>Password : </td> <td><input type="password" name="password" placeholder="Password" required></td> </tr> </form> </table> <br/> <table align="center"> <form> <tr> <td><input type="submit" value=" Log In "/></td> </tr> </form> </table> </body> </html>推荐答案
请确保您已在第一个表单中提交。 您有多种表格。因此，要求不起作用。
Please make sure you have submit inside the first form. You have multiple forms. Hence required is not working.
<html> <head> <link href="icon.ico" rel="icon"> <title>Log In</title> </head> <body> <h1 align="center">Welcome to site</h1> <hr width="50%" /> <br/> <table align="center"> <form id="form1" runat="server"> <tr> <td>Log In : </td> <td> <input type="text" name="LogInEmail" placeholder="Enter your email" required> </td> </tr> <tr> <td>Password : </td> <td> <input type="password" name="password" placeholder="Password" required> </td> </tr> <tr> <td> <input type="submit" value=" Log In " /> </td> </tr> </form> </table> </body> </html>但是如果你坚持要有多个表格和表格，在提交之前，你可以验证第一个表格。如果我没有错，你试着有一个更好的用户界面布局，可以处理CSS而不是多个表格和表格。
But if you insist in having multiple tables and forms, before submit, you can validate the first form. If I am not wrong, you are trying have a better UI placement which can be dealt with CSS instead of multiple Forms and tables.
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'必需'属性不起作用
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