[英]How to use string varaible value as key name in object in Typescript
In Typescript I would like the myObj
variable to be:在打字稿中,我希望myObj
变量是:
{'key01': 'value01'}
So I go ahead with:所以我继续:
let keyName = 'key01';
let myObj = {keyName: 'value01'};
console.log(myObj);
But the resulting variable is但结果变量是
{ keyName: 'value01' }
Can I use the value of the keyName
variable to use as the key name for the variable myObj
?我可以使用keyName
变量的值作为变量myObj
的键名吗?
You can use the bracket notation property accessor:您可以使用括号表示法属性访问器:
let keyName = 'key01'; let myObj = {}; myObj[keyName] = 'value01'; console.log(myObj);
For TypeScript, use:对于打字稿,请使用:
let keyName = 'key01';
let myObj:any = {};
myObj[keyName] = 'value01';
If you don't want to waste space with an extra line of code for defining the main object and then defining the custom key, you can use bracket notation inline.如果您不想在定义主对象然后定义自定义键的额外代码行中浪费空间,您可以使用括号表示法内联。
let keyName = 'key01'; let myObj = { [keyName]: 'value01' }; console.log(myObj);
If you want to change the value of your object using the variable keyName
you can use the following.如果要使用变量keyName
更改对象的值,可以使用以下命令。
let keyName = "newValue"; let myObject = {keyName: "oldValue"} myObject.keyName = keyName console.log(myObject)
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