Question

使用下面的JSON字符串，我用它在我的Xpages应用程序上呈现dojo treegrid：

var data=    {identifier: 'name',
 label: 'continent',
items: [
    {"name": "Africa", "field": "continent", "children": "[
            { "name":"Egypt", "field":"country" },
            { "name":"Kenya", "field":"country", "children":"[
                { "name":"Nairobi", "field":"city" },
                { "name":"Mombasa", "field":"city" } ]"
            ]},
            { "name":"Sudan", "field":"country", "children":"[
                { "name":'Khartoum', "field":"city" }]"
            },
        { "name":'Asia', "field":"continent", "children":"[
            { "name":"China", "field":"country" },
            { "name":"India", "field":"country"},
            { "name":"Russia", "field":"country" },
            { "name":"Mongolia", "field":"country" } ]"
        }

     }
]}

我尝试创建一个onClick事件，每次我在节点上看到一个警报节点未定义的执行我如何获得项目的actaull值？

var store= new dojo.data.ItemFileReadStore({data: data});
var model = new dijit.tree.ForestStoreModel({

    store: store,
    query: {field:"continent"},
    labelAttr :"name"
    rootId: 'id',
    rootLabel: 'continent',
    childrenAttrs: ['children']
});

var grid = new dojox.grid.TreeGrid({
    treeModel: model,
    showRoot: true,
    openOnDblClick:true,    
    onClick : function(item, node, evt){    
    var id=store.getValue(item,"name");
    alert("Execute of node " + id)

}

}, 'treeGrid');
grid.startup();

Answer 1

我建议在触发onclick事件时检查store是什么。请记住，onclick事件将作为客户端JavaScript附加到每个项目。我怀疑它不会在你编写它的上下文中运行，但它是一个离散函数。因此它只能访问传递给函数的变量 - item，node和evt - 并且无法访问在函数范围之外声明的变量，例如存储。

您可以从item或node变量导航到数据存储。

Dijit Tree onClick事件呈现未定义

1 个答案: