I have a class array where the class looks like:
class Tag{
select: string;
search: string;
}
I want to convert it to JSON where it'll probably look like [{select: "blah", search: "bleh"}, {...}, {...}]
.
Is this possible? Because from the Angular 2 tutorial you can do the opposite with the line:
.map((r: Response) => r.json().data as Hero[]);
您可以使用JSON.stringify()
将 javascript 对象转换为 json 字符串 由于类和类的实例是 javascript 中的对象,因此您也可以将它们字符串化
use JSON.stringify()
most thing in js
are object.
class Hero{}
let Heros:Hero[] = JSON.stringify(response.data);
so the Heros
is the Array you want :)
You can add a toJSON()
function in your class. This function gets called automatically when JSON.stringify()
is called on your class instance
class Person{
constructor(readonly name){}
toJSON(){
return {
firstName: this.name
}
}
}
Now if you console.log
you class instance using JSON.stringify
you will see this result
const person = new Person("Tom"); console.log(JSON.stringify(person));
Output
{
firstName: "Tom"
}
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