ccmv

前些日子在做ext相关开发，用到ext tree 发现他是基于ajax动态加载的。

这种模式有好处也有坏处，好处就是多节点的时候可以节省资源。 但是我们的系统节点不会很多。一次性读出反而更方便。本来都打算用Dtree了，无意中又发现了个实现方法，如果谁有更好的请跟我交流

var Tree = Ext.tree;

var tree = new Tree.TreePanel('tree', {
animate:true,
enableDD:false,
loader: new Tree.TreeLoader(), // Note: no dataurl, register a TreeLoader to make use of createNode()
lines: true,
selModel: new Ext.tree.MultiSelectionModel(),
containerScroll: false
});


// json data describing the tree
var json =
[
{"text" : "Audi", "id" : 100, "leaf" : false, "cls" : "folder", "children" : [
{"text" : "A3", "id" : 1000, "leaf" : false, "cls" : "folder", "children" :
[ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"},
{"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"},
{"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"},
{"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"},
{"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"}
]
},
{"text" : "TT", "id" : 1000, "leaf" : false, "cls" : "folder", "children" :
[ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"},
{"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"},
{"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"},
{"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"},
{"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"}
]
}]
},
{"text" : "Cadillac", "id" : 300, "leaf" : false, "cls" : "folder", "children" : [
{"text" : "CTS", "id" : 1000, "leaf" : false, "cls" : "folder", "children" :
[ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"},
{"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"},
{"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"},
{"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"},
{"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"}
]
},
{"text" : "CTS-V", "id" : 1000, "leaf" : false, "cls" : "folder", "children" :
[ {"text" : "Fuel Economy", "id" : "100000", "leaf" : true, "cls" : "file"},
{"text" : "Invoice", "id" : "100001", "leaf" : true, "cls" : "file"},
{"text" : "MSRP", "id" : "100002", "leaf" : true, "cls" : "file"},
{"text" : "Options", "id" : "100003", "leaf" : true, "cls" : "file"},
{"text" : "Specifications", "id" : "100004", "leaf" : true, "cls" : "file"}
]
}]
}

];

// set the root node
var root = new Tree.AsyncTreeNode({
text: 'Autos',
draggable:false,
id:'source',
children: json
});

tree.setRootNode(root);

tree.render();
root.expand();