相关疑难解决方法(0)

我想使用Java脚本获取“选择一个”菜单，如何获取selecteditem 值？

<h:outputLabel value="#{l.description1}" styleClass="dataValue" />
<t:selectOneMenu id="chooseLevelTypeId"
    value="#{AssetWizardComptTypeTile.levelTypeId}">
    <f:selectItem itemLabel="" itemValue="0" />
    <f:selectItems value="#{GeneralTables.levelTypesList}" />
    <a4j:support event="onchange" action="#{WizardMainControl.action}"
        ??oncomplete="if (document.getElementById('wizardForm:chooseLevelTypeId').selecteditem == 'somthing') 
        document.getElementById('wizardForm:a1').style.display = 'block';"
        reRender="chooseLevelTypeDesc" />
</t:selectOneMenu>