如何使输入用户名字段的文本复制到密码字段，使它们相同？

Question

I know this is easy but I want to make the password automatically be entered as the same thing as the username but I cant get it to copy right in real time.

<%=I18n._("Username")%>:</td>
    <td><%data.printTextField(out,UserPerson.FIELD_NAME,null,"text",100,0);%></td>
  </tr>
  <tr style="<%=data.isFacebook ? "display: none" : "" %>">
    <td class="nowrap fieldheader"><span class="note-fieldrequired">*</span> <%=I18n._("Password")%>:</td>
    <td><%data.printPasswordField(out,UserPerson.FIELD_PASSWORD,null,"password",100,0);%></td>
  </tr>

Answer 1

Let's say you have a username field and a password field like these:

<input type="text" id="input-username">
<input type="password" id="input-password">

You have to attach an event listener to the username field (using JavaScript ), eg like this:

const inputUsername = document.getElementById('input-username');
const inputPassword = document.getElementById('input-password');
inputUsername.addEventListener('keyup', function () {
  inputPassword.value = inputUsername.value
})

However, ask yourself: do you really need to do this?