閲覧数:302
投稿日:2018-07-13
更新日:2018-07-13
オブジェクトから JSON へ変換。JSON.stringify() メソッドを利用
コード
let obj = {
ary:[0,1,2],
obj1:{
a:3,
b:4,
c:5
}
};
let str = JSON.stringify(obj);
console.log(str); //{"ary":[0,1,2],"obj1":{"a":3,"b":4,"c":5}}
console.log(obj); //{ary: Array(3), obj1: {…}}
console.log(str.ary);//undefined。JSON文字列へはアクセス不可
console.log(obj.ary); //[0, 1, 2]
console.log(obj.ary[1]); //1
console.log(obj.obj1); //{a: 3, b: 4, c: 5}
console.log(obj.obj1.a); //3
console.log(obj.obj1.b); //4結果
{"ary":[0,1,2],"obj1":{"a":3,"b":4,"c":5}}
{ary: Array(3), obj1: {…}}
undefined
[0, 1, 2]
1
{a: 3, b: 4, c: 5}
3
4