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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                [TOC] # JSON 盡管X在Ajax中代表XML, 但由于JSON的許多優勢,比如更加輕量以及作為Javascript的一部分,目前**JSON的使用比XML更加普遍**。 ## JSON語法 JSON 語法衍生于 JavaScript 對象標記法語法: * 數據在名稱/值對中 * 數據由逗號分隔 * 花括號容納對象 * 方括號容納數組 ## 案例1:使用JSON編寫數據 * [ ] XML數據格式 ``` <employees> <employee> <firstName>Bill</firstName> <lastName>Gates</lastName> </employee> <employee> <firstName>Steve</firstName> <lastName>Jobs</lastName> </employee> <employee> <firstName>Elon</firstName> <lastName>Musk</lastName> </employee> </employees> ``` * [ ] JSON數據格式 ``` {"employees":[ { "firstName":"Bill", "lastName":"Gates" }, { "firstName":"Steve", "lastName":"Jobs" }, { "firstName":"Elon", "lastName":"Musk" } ]} ``` * [ ] JSON字符串轉JS對象 ``` obj = JSON.parse(jsonstr); obj = eval("("+jsonstr+")"); ``` * [ ] JS對象轉JSON字符串 ``` jsonstr = JSON.stringify(obj); ``` ## 案例2:請求JSON數據并顯示 ![](https://img.kancloud.cn/01/fa/01fa55925efbdc942af21c98f5fcbadf_480x268.gif)
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