Question

我有一个comboxbox，其值直接来自后端视图。后端视图由一个排序列组成，该列由2个字段创建，带有“|”中间的字符（field1 +“|”+ field2）。在组合框中创建值的公式是

var dbName = session.getCurrentDatabase();
var view = ("UniNames&Abbr");
var UniList = @Unique(@DbColumn(dbName,view,1));
return UniList

从此公式创建的列表中选择值时，view.postscipt警报会中断。没有别人打破。错误消息是：

执行JavaScript动作表达式时出错脚本解释器错误，line = 9，col = 14：[TypeError]在类型为'String [JavaScript Object]'的对象上调用方法'postScript（string）'时出错

JavaScript代码 1：//sessionScope.SavUniAbbr = sessionScope.UniAbbr; 2：var ComboBox1：com.ibm.xsp.component.xp.XspSelectOneMenu = getComponent（“ComboBox1”）。getValue（）; 3：if（!! ComboBox1）{ 4：print（“ComboBox1 =”，ComboBox1）; 5：var type = typeof ComboBox1; 6：打印（“ComboBox1是类型”，类型） 7：var varAlert = ComboBox1 +“是type”+ type +“。”; 8：var al =“alert（'”+ varAlert +“'）”; 9：view.postScript（al）; 10：var varAlert =“你选择了”+ ComboBox1 +“。”; 11：var al =“alert（'”+ varAlert +“'）”; 12：view.postScript（al）; 13：}

这是我的代码：

<?xml version="1.0" encoding="UTF-8"?>
<xp:view xmlns:xp="http://www.ibm.com/xsp/core"
    xmlns:xe="http://www.ibm.com/xsp/coreex"
    xmlns:xc="http://www.ibm.com/xsp/custom"
    xmlns:bz="http://www.ibm.com/xsp/bazaar">
    <xp:this.resources>
        <xp:styleSheet href="/buttonptr.css"></xp:styleSheet>
        <xp:script src="/SSJS.jss" clientSide="false"></xp:script>
        <xp:styleSheet href="/CoopTeacher.css"></xp:styleSheet>
        <xp:script src="/CSJS.js" clientSide="true"></xp:script>
    </xp:this.resources>


    <xp:panel id="APanel"
        style="padding-left:10.0px;padding-right:10.0px">
        <xp:table style="width:50.0%">

            <xp:tr>


                <xp:td>


                    <xp:comboBox id="ComboBox1" style="width:99.0%">


                        <xp:selectItems id="selectItems1">
                            <xp:this.value><![CDATA[#{javascript:return ""}]]></xp:this.value>
                        </xp:selectItems>
                        <xp:selectItem itemLabel="Item1"
                            itemValue="Value1" id="selectItem1">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item2"
                            itemValue="Value2" id="selectItem2">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item3"
                            itemValue="Value3" id="selectItem3">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item4"
                            itemValue="Value4" id="selectItem4">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item5"
                            itemValue="Value5" id="selectItem5">
                        </xp:selectItem>


                        <xp:selectItems>
                            <xp:this.value><![CDATA[#{javascript:var dbName = session.getCurrentDatabase();
var view = ("UniNames&Abbr");
var UniList = @Unique(@DbColumn(dbName,view,1));
return UniList}]]></xp:this.value>
                        </xp:selectItems>
                        <xp:eventHandler event="onchange" submit="true"
                            refreshMode="partial" refreshId="APanel">
                            <xp:this.action><![CDATA[#{javascript://sessionScope.SavUniAbbr = sessionScope.UniAbbr;
var ComboBox1:com.ibm.xsp.component.xp.XspSelectOneMenu = getComponent("ComboBox1").getValue();
if (!!ComboBox1) {
    print("ComboBox1 = ",ComboBox1);
    var type = typeof ComboBox1;
    print("ComboBox1 is type ",type)
    var varAlert = ComboBox1 + " is type " + type + ".";
    var al = "alert('"+ varAlert +"')";
    view.postScript(al);
    var varAlert = "You selected " + ComboBox1 + ".";
    var al = "alert('"+ varAlert +"')";
    view.postScript(al);
}
}]]></xp:this.action>
                        </xp:eventHandler></xp:comboBox>
                </xp:td>

            </xp:tr>

        </xp:table>

    </xp:panel>
</xp:view>

非常感谢您对此的看法。 ---莉莎＆安培;

Answer 1

我不知道为什么会出现问题 - 但有一种解决方法。但是，我必须添加一个按钮并更改comboBox上的服务器端脚本。

1）我添加了“viewScope.SavChoice = viewScope.Choice;”到comboBox的onChange事件。 2）在按钮的onClick事件中，第一行代码是“viewScope.Choice = viewScope.SavChoice;”之后我能够使用服务器端警报来宣布事情。这是新代码：

<?xml version="1.0" encoding="UTF-8"?>
<xp:view xmlns:xp="http://www.ibm.com/xsp/core" xmlns:xe="http://www.ibm.com/xsp/coreex"
    xmlns:xc="http://www.ibm.com/xsp/custom" xmlns:bz="http://www.ibm.com/xsp/bazaar">
    <xp:panel id="APanel" style="padding-left:10.0px;padding-right:10.0px">
        <xp:table>
            <xp:tr>
                <xp:td>
                    <xp:comboBox id="ComboBox1" value="#{viewScope.Choice}">
                        <xp:selectItems id="selectItems1">
                            <xp:this.value><![CDATA[#{javascript:return ""}]]></xp:this.value>
                        </xp:selectItems>
                        <xp:selectItem itemLabel="Item1" itemValue="Value1"
                            id="selectItem1">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item2" itemValue="Value2"
                            id="selectItem2">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item3" itemValue="Value3"
                            id="selectItem3">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item4" itemValue="Value4"
                            id="selectItem4">
                        </xp:selectItem>
                        <xp:selectItem itemLabel="Item5" itemValue="Value5"
                            id="selectItem5">
                        </xp:selectItem>
                        <xp:selectItems id="selectItems2">
                            <xp:this.value><![CDATA[#{javascript:var dbName = session.getCurrentDatabase();
var view = ("UniNames&Abbr");
var UniList = @Unique(@DbColumn(dbName,view,1));
return UniList}]]></xp:this.value>
                        </xp:selectItems>
                        <xp:eventHandler event="onchange" submit="true"
                            refreshMode="partial" refreshId="APanel" id="eventHandler1">
                            <xp:this.action><![CDATA[#{javascript:viewScope.SavChoice = viewScope.Choice;}]]></xp:this.action>
                        </xp:eventHandler>
                    </xp:comboBox>
                </xp:td>
                <xp:td>
                    <xp:button id="button5" value="Server Side Alert">
                        <xp:eventHandler event="onclick" submit="true"
                            refreshMode="partial" id="eventHandler9" refreshId="APanel">
                            <xp:this.script><![CDATA[XSP.getElementById("#{id:ComboBox1}").value = "";]]></xp:this.script>
                            <xp:this.action><![CDATA[#{javascript:viewScope.Choice = viewScope.SavChoice;
if (!!Choice) {
    print("Choice = ",Choice);
    var type = typeof Choice;
    print("Choice is type ",type)
    var varAlert = Choice + " is type " + type + ".";
    var al = "alert('"+ varAlert +"')";
    view.postScript(al);
    var varAlert = "You selected " + Choice + ".";
    var al = "alert('"+ varAlert +"')";
    view.postScript(al);
}
}]]></xp:this.action>
                        </xp:eventHandler>
                    </xp:button>
                </xp:td>
            </xp:tr>
        </xp:table>
    </xp:panel>
</xp:view>

当组合框选项来自field1 +“|”创建的视图列时，为什么view.postscript会中断？ + field2

1 个答案: