JSON.parse：解析对象中的数组

Question

I have a JSON string of an object that has an array as one of its properties. How can I get the resulting object to have an array of strings:

 let arr = ['10','22']; let obj = `{ "name":"bob", "arr":"${arr}" }`; let parse = JSON.parse(obj); console.log(parse);

Expected Output:

{
    "name":"bob",
    "arr":['10','22']
}

Answer 1

You should use JSON.stringify and remove two double-quotes "

 let arr = ["10", "22"] let obj = `{ "name":"bob", "arr":${JSON.stringify(arr)} }` let parse = JSON.parse(obj) console.log(parse)

Answer 2

The problem is in the definition. You are trying to include an array in the string. And if you try to print array as a string in JavaScript it joins the keys with , . To make it work, you need to convert the array as JSON string and remove the double-quotes, and it will work as expected.

let arr = ['10','22'];
let obj = `{
    "name":"bob",
    "arr": ${JSON.stringify(arr)}
}`;
let parse = JSON.parse(obj);
console.log(parse);