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下面提到的是一個必需的樹。我想用'img'[directory] &符號('+',' - ')來擴展&壓縮。我對EXTJS不是很熟悉。我正在運行EXTJS通過HTML & js.can any1幫助我處理確切的代碼?如何用EXTJS構建下面的樹?
-[img] PARENT
-[img] FIRST LEVEL CHILD 1
-[img] SECOND LEVEL CHILD
[img] THIRD LEVEL CHILD 1
[img] THIRD LEVEL CHILD 2
[IMG] THIRD LEVEL CHILD 3
+[img] FIRST LEVEL CHILD 2
+[img] FIRST LEVEL CHILD 3