Uncaught TypeError: Cannot use 'in' operator to sea
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Uncaught TypeError: Cannot use 'in' operator to search for 'length' in[{"tree_id":38,"tree_name":"我是一棵小小的树，但我还是一颗小小的树 ^0^","tree_node":38,"tree_order":1,"tree_contexts":"2"},{"tree_id":39,"tree_name":"我是一棵小树 ^0^","tree_node":38,"tree_order":1,"tree_contexts":"2"},{"tree_id":40,"tree_name":"谢谢博主^0^","tree_node":38,"tree_order":11,"tree_contexts":"2"},{"tree_id":41,"tree_name":"我是一棵目录树","tree_node":38,"tree_order":1,"tree_contexts":"2"},{"tree_id":42,"tree_name":"我是一棵目录树","tree_node":38,"tree_order":1,"tree_contexts":"2"}]
解决方案：JSON字符串转换为JavaScript对象
$.parseJSON(data)
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