如何在jQuery中查找是否已检查ap：selectBooleanCheckbox

Question

I need to know how to iterate through a list of primefaces p:selectBooleanCheckbox elements and find out rather or not they have been checked. 我需要知道如何遍历素数列表p：selectBooleanCheckbox元素，并找出它们是否已被检查。 I have found out how to find them but not how to actually get rather or not they are true or false, I was wondering if anyone here would be able to assist with this. 我已经找到了如何找到它们的方法，却没有找到实际上是正确还是错误的方法，我想知道这里是否有人可以帮助您。

In as little code as possible this is what I am currently doing to get the actual element returned to me, I have used the jquery :checked as well as .val() and a few other methods but none seem to work. 我正在使用尽可能少的代码来将实际元素返回给我，我使用了jquery：checked以及.val（）和其他一些方法，但似乎没有任何作用。 I have also tried sifting through the code in the element object in the console looking for anything that stands out and I haven't been able to find anything either. 我还尝试过筛查控制台中element对象中的代码，以查找突出的内容，但我也找不到任何内容。 Any help would be greatly appreciated. 任何帮助将不胜感激。

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:p="http://primefaces.org/ui">
<body>
    <ui:composition template="./../../WEB-INF/template.xhtml">
        <ui:define name="content">
            <div style="margin-bottom: 350px;">
                <p:outputLabel for="coop_sent" value="CO-OP Sent"/>
                <p:selectBooleanCheckbox name="coop_sent" styleClass="pc"     widgetVar="coop_sent" id="coop_sent" value="#{editProjectsBean.pc.co_opSen}"/>

                <script type="text/javascript">
                    for (var propertyName in PrimeFaces.widgets) {
                        if (PrimeFaces.widgets[propertyName] instanceof     PrimeFaces.widget.SelectBooleanCheckbox){
                            if (PrimeFaces.widgets[propertyName].widgetVar ===     'coop_sent') {
                                console.log($('PrimeFaces.widgets[propertyName].widgetVar.coop_sent')); 
                            }
                        }
                    }
                </script>
            </div>
        </ui:define>
    </ui:composition>
</body>
</html>

Answer 1

As to the concrete question, the associated widget object has just a isChecked() function. 对于具体问题，关联的窗口小部件对象只有一个isChecked()函数。

<p:selectBooleanCheckbox widgetVar="foo" ... />

var checked = PF("foo").isChecked();

See also this blog for an introduction on how to explore the widget var and all available functions. 另请参阅此博客，以获取有关如何探索小部件var和所有可用功能的介绍。

As to the actual functional requirement, the question is a bit confusing and ambiguous as you seem to be interested in scanning through multiple checkbox components, but the jQuery code snippet is actually interested in only one. 至于实际的功能需求，这个问题有点令人困惑和模棱两可，因为您似乎对扫描多个复选框组件感兴趣，但是jQuery代码片段实际上只对其中一个感兴趣。 I guess that you're actually including this code snippet multiple times in an iteration, but you faced the problem that you ultimately found only one <p:selectBooleanCheckbox> widget in PrimeFaces.widgets which made you to ask this overly generic question. 我猜您实际上在一次迭代中多次包含了此代码段，但是您遇到的问题是，您最终在PrimeFaces.widgets仅找到一个<p:selectBooleanCheckbox>小部件，这使您不得不问这个过于笼统的问题。

You should be suffixing the widget var name with eg the iteration index or so. 您应该为小部件的var名称加上后缀，例如迭代索引。

<p:selectBooleanCheckbox widgetVar="foo_#{index}" ... />

A (better) alternative is to just give them all a common style class and traverse the HTML DOM tree instead. （更好的）替代方法是只给它们一个通用的样式类，然后遍历HTML DOM树。 There's a hidden <input type="checkbox"> which you could just grab and check the checked state. 有一个隐藏的<input type="checkbox"> ，您可以抓住它并检查checked状态。

<p:selectBooleanCheckbox ... styleClass="pc" />

if ($(".ui-chkbox.pc input[type=checkbox]:checked").length) {
    // At least one is checked.
}

Answer 2

Well from what I've tried, using this tag: 根据我的尝试，使用此标记：

<p:selectBooleanCheckbox value="#{Bean.checkbox}" styleClass="test"/>

the rendered html is this: 呈现的html是这样的：

<div id="tableForm:j_id868283402_33c0fe0b" class="ui-chkbox ui-widget test">
    <div class="ui-helper-hidden-accessible">
        <input id="tableForm:j_id868283402_33c0fe0b_input" type="checkbox" name="tableForm:j_id868283402_33c0fe0b_input">
    </div>
    <div class="ui-chkbox-box ui-widget ui-corner-all ui-state-default ui-state-active">
        <span class="ui-chkbox-icon ui-icon ui-c ui-icon-blank"></span>
    </div>
</div>

toggling the checkbox would just replace the ui-icon-blank to ui-icon-check in the <span> tag and vice versa. 切换复选框只会将<span>标记中的ui-icon-blank替换为ui-icon-check ，反之亦然。

I added styleClass="test" in the <p:selectBooleanCheckbox> tag. 我在<p:selectBooleanCheckbox>标记中添加了styleClass="test" 。 I think you can just use this .test .ui-chkbox-box > span to select the <span> tag and determine the values in its class attribute whether it's blank or checked. 我认为您可以只使用此.test .ui-chkbox-box > span选择<span>标记并确定其class属性中的值是空白还是选中。

如何在jQuery中查找是否已检查ap：selectBooleanCheckbox

问题描述

2 个解决方案

解决方案1
2 2015-09-21 07:29:17

解决方案2
0 2015-09-21 02:08:42

如何在jQuery中查找是否已检查ap：selectBooleanCheckbox

问题描述

2 个解决方案

解决方案1 2 2015-09-21 07:29:17

解决方案2 0 2015-09-21 02:08:42

解决方案1
2 2015-09-21 07:29:17

解决方案2
0 2015-09-21 02:08:42