如何在登录表单上的drupal 7中设置占位符

2022-01-23 00:00:00 forms php javascript css drupal-7

我需要在 Drupal 7 中为水平登录表单设置一个占位符.单击该文本需要消失.他们只会说用户名"和密码".这是目前表格的代码.谢谢！

I need to set a placeholder for a horizontal login form in Drupal 7. This text needs to disappear when clicked on. They will just say 'username' and 'password'. Here is the code for the form as of now. Thanks! 

function horizontal_login_block($form) {
$form['#action'] = url($_GET['q'], array('query' => drupal_get_destination()));
$form['#id'] = 'horizontal-login-block';
$form['#validate'] = user_login_default_validators();
$form['#submit'][] = 'user_login_submit';
$form['#prefix'] = '<div id="loginbar">';
$form['#suffix'] = '</div>';
$form['name'] = array(
 '#type' => 'textfield',
 '#prefix' => '<div class="usericon">',
 '#suffix' => '</div>',
 '#maxlength' => USERNAME_MAX_LENGTH,
 '#default_value' => t('Username'),
 '#id' => 'userbar',
 '#size' => 15,
 '#required' => TRUE,
);

推荐答案

这是在 HTML5 中使用占位符 HTML 属性的方法.但是，它不适用于任何 Internet Explorer 版本.

This is how to do it in HTML5, using placeholder HTML attribute. However, it's not working in any Internet Explorer version.

    function horizontal_login_block($form) {
    $form['#action'] = url($_GET['q'], array('query' => drupal_get_destination()));
    $form['#id'] = 'horizontal-login-block';
    $form['#validate'] = user_login_default_validators();
    $form['#submit'][] = 'user_login_submit';
    $form['#prefix'] = '<div id="loginbar">';
    $form['#suffix'] = '</div>';
    $form['name'] = array(
     '#type' => 'textfield',
     '#prefix' => '<div class="usericon">',
     '#suffix' => '</div>',
     '#maxlength' => USERNAME_MAX_LENGTH,
/* Don't set default values. HTML5
     '#default_value' => t('Username'), */
     '#id' => 'userbar',
     '#size' => 15,
     '#required' => TRUE,
     '#attributes' =>array('placeholder' => t('Username'))
    );

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