一个js的问题

今天在网上下了个js到本地，打开一看，里面全是：

var _city_1=["110101:\u4e1c\u57ce\u533a","110102:\u897f\u57ce\u533a","110103:\u5d07\u6587\u533a","110104:\u5ba3\u6b66\u533a","110105:\u671d\u9633\u533a","110106:\u4e30\u53f0\u533a","110107:\u77f3\u666f\u5c71\u533a","110108:\u6d77\u6dc0\u533a","110109:\u95e8\u5934\u6c9f\u533a","11011101:\u623f\u5c71\u533a","110112:\u901a\u5dde\u533a","110113:\u987a\u4e49\u533a","110114:\u660c\u5e73\u533a","110115:\u5927\u5174\u533a","110116:\u6000\u67d4\u533a","110117:\u5e73\u8c37\u533a","110228:\u5bc6\u4e91\u53bf","110229:\u5ef6\u5e86\u53bf"];

这种格式的字符，不知道这是什么格式的？能不能还原？

还原－难！