需求背景 需要输入一串15位的数字,但是要分为3个输入框,每个输入框限定长度5位,当删除当前输入框的内容时,focus到上一个输入框: 实现方法 var field = $('.phone-field'); field.on('keyup', 'input.phone-input', function(e) { var key = e.keyCode || e.charCode; var inputs = $('input.phone-input'); if ($(this).val().le
介绍 Layout which wraps an {@link android.widget.EditText} (or descendant) to show a floating label when the hint is hidden due to the user inputting text. Also supports showing an error via {@link #setErrorEnabled(boolean)} and {@link #setError(CharSe