问题描述
表单里有“密码”和“确认密码”两个字段，当我输入“确认密码”时，怎样才能验证其与“密码”一致呢？我想要的效果就是当“确认密码”和“密码”不相同时，“确认密码”输入框旁边会出现一个错误提示！
解决方案
VerticalPanel vp = new VerticalPanel();vp.add(title);vp.add(description);final PasswordTextBox pbox1 = new PasswordTextBox();final PasswordTextBox pbox2 = new PasswordTextBox();final Label label = new Label();VerticalPanel panel = new VerticalPanel ();FlowPanel topPanel = new FlowPanel();FlowPanel bottomPanel = new FlowPanel();panel.add(topPanel);panel.add(bottomPanel);topPanel.add(pbox1);bottomPanel.add(pbox2);bottomPanel.add(label);pbox1.addFocusListener(new FocusListener(){public void onFocus(Widget sender) {}public void onLostFocus(Widget sender) {if(!pbox1.getText().equals(pbox2.getText())){label.setText("password is not same!");}else{label.setText("");}}});RootPanel.get().add(panel);