如何通过关键字删除json数组中的所有对象

Question

我有这样的json：

json = [ 

   { 

      "value1":"3863",

      "value2":"4567"

   },

   { 

      "value1":"4456",

      "value2":"87687"

   },

   { 

      "value1":"98494",

      "value2":"4534"

   },   

]

我需要的是删除 value2 以便 json 看起来像：

json = [ 

   { 

      "value1":"3863"

   },

   { 

      "value1":"4456"

   },

   { 

      "value1":"98494"

   },   

]

我试过用

for(var i = 0; i < json.length; i++)

{    

  delete json["value2"];   

}

但它不起作用。

有没有办法做到这一点？

Answer 1

const json = [&nbsp;&nbsp; &nbsp;{&nbsp;&nbsp; &nbsp; &nbsp; "value1":"3863",&nbsp; &nbsp; &nbsp; "value2":"4567"&nbsp; &nbsp;},&nbsp; &nbsp;{&nbsp;&nbsp; &nbsp; &nbsp; "value1":"4456",&nbsp; &nbsp; &nbsp; "value2":"87687"&nbsp; &nbsp;},&nbsp; &nbsp;{&nbsp;&nbsp; &nbsp; &nbsp; "value1":"98494",&nbsp; &nbsp; &nbsp; "value2":"4534"&nbsp; &nbsp;},&nbsp; &nbsp;];json.forEach(item => delete item.value2);

Answer 2

使用您当前的语法：for(var i = 0; i < json.length; i++){&nbsp; &nbsp;&nbsp;&nbsp; delete json[i].value2;&nbsp; &nbsp;}

Answer 3

您只是错过i了访问 json 数组元素的用法：for(var i = 0; i < js.length; i++){&nbsp; &nbsp;&nbsp;&nbsp; delete json[i]["value2"];&nbsp; &nbsp;}