Javascript 更改属性名称
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change property name
提问by firebird
I have a JavaScript object as follows:
我有一个 JavaScript 对象，如下所示：
var a = { Prop1: 'test', Prop2: 'test2' }
How would I change the "property name" of Prop1 to Prop3?
如何将 Prop1 的“属性名称”更改为 Prop3？
I tried
我试过
for (var p in r) p.propertyName = 'Prop3';
but that did not work.
但这没有用。
回答by SLaks
That isn't directly possible.
这不是直接可能的。
You can just write
你可以写
a.Prop3 = a.Prop1;
delete a.Prop1;
回答by firebird
Using the proposed property rest notation, write
使用建议的财产休息符号，写
const {Prop1, ...otherProps} = a;
const newObj = {Prop3: Prop1, ...otherProps};
This is supported by Babel's object rest spread transform.
Babel 的object rest spread transform支持这一点。
回答by kendotwill
Adding to the object rest spread solution
添加到对象休息传播解决方案
const { Prop1: Prop3, ...otherProps } = a;
const newObj = { Prop3, ...otherProps };
回答by Rafael Ribeiro
Workaround
解决方法
Convert your Objectto a Stringusing JSON.stringify, then replace any occurrences of Prop1with Prop3using str.replace("Prop1", "Prop3").
Finally, convert your string back to an Objectusing JSON.parse(str).
将您Object的String使用JSON.stringify，然后更换任何出现Prop1与Prop3使用str.replace("Prop1", "Prop3")。最后，将您的字符串转换回Objectusing JSON.parse(str)。
Note:str.replace("Prop1", "Prop3")will only replace the first occurrence of "Prop1" in the JSON string. To replace multiple, use this regex syntax instead:
str.replace(/Prop1/g, "Prop3")Refrence Here
注意：str.replace("Prop1", "Prop3")只会替换 JSON 字符串中第一次出现的“Prop1”。要替换多个，请改用此正则表达式语法：
str.replace(/Prop1/g, "Prop3")Refrence Here
Demo
演示
Example
例子
var a = { Prop1: 'test', Prop2: 'test2' }
str = JSON.stringify(a);
str = str.replace("Prop1","Prop3");
var converted = JSON.parse(str);
