h:inputText的默认值 [英] Default value for h:inputText

问题描述

想象一个绑定到ManagedBean的文本框:

Imagine a text box, bound to a ManagedBean:

<h:inputText id="name" value="#{mb.name}"/>

我想将该字段默认为一个值.

I would like to default the field to a value.

我知道我可以在构造时在ManagedBean中设置值，但是这对我不起作用，因为我在不同的xhtml页面中使用相同的ManagedBean作为后备bean.而且我不想在所有这些页面中初始化名称"字段.

I know I can set the value in the ManagedBean at construction time, but that doesn't work for me as I use the same ManagedBean as a backing bean in different xhtml pages. And I don't want the 'name' field to be initialized in all those pages.

有人可以提出策略吗?还是我缺少一些必不可少的东西?

Can somebody suggest a strategy? Or am I missing something essential?

非常感谢！

推荐答案

• 您可以使用javascript(document.getElementById("formName:textName").value = 'defaultValue';.也许在document.onload

  • you can fill the value in with javascript (document.getElementById("formName:textName").value = 'defaultValue';. Perhaps on document.onload

    您可以对托管bean进行子类化，并在默认构造函数或@PostConstruct方法中填充默认值，然后使用子类化的bean.

    you can subclass your managed bean and fill the default value in the default constructor, or in a @PostConstruct method, and use the subclassed bean.

    这篇关于h:inputText的默认值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！