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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
                注:都輸出是值 `24` ![mark](http://qiniu.newthink.cc/blog/20171210-111830079.png) # 代碼 ``` //根據鍵名得到對應的鍵值-三種方法 getJson('age'); getJson2('age'); getJson3('age'); //1、使用eval方法 function getJson(key){ var jsonObj={"name":"傅紅雪","age":"24","profession":"刺客"}; var eValue=eval('jsonObj.'+key); console.log(eValue); } //2、遍歷Json串獲取其屬性 function getJson2(key){ var jsonObj={"name":"傅紅雪","age":"24","profession":"刺客"}; for(var item in jsonObj){ if(item==key){ //item 表示Json串中的屬性,如'name' var jValue=jsonObj[item];//key所對應的value console.log(jValue); } } } //3、直接獲取 function getJson3(key){ var jsonObj={"name":"傅紅雪","age":"24","profession":"刺客"}; console.log(jsonObj[key]); } ```
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