EasyUI 樹形菜單tree 定義圖標

{   
    "id":1,   
    "text":"Folder1",   
    "iconCls":"icon-save",   
    "children":[{   
        "text":"File1",   
        "checked":true  
    },{   
        "text":"Books",   
        "state":"open",   
        "attributes":{   
            "url":"/demo/book/abc",   
            "price":100   
        },   
        "children":[{   
            "text":"PhotoShop",   
            "checked":true  
        },{   
            "id": 8,   
            "text":"Sub Bookds",   
            "state":"closed"  
        }]   
    }]   
}

紅色處修改樹形結點的圖標