将字符串数组转换为JSON属性中的对象数组

Question

I have the following JSON returned from an endpoint

{
    "response": {
        "lines": [
            "[{'line':'3007621h7s2','type':'national'},{'line':'3007663f7s9','type':'international'}]",
            "[{'line':'3007262p7f6','type':'national'},{'line':'3007262a0s1','type':'international'}]"
        ]
    }
}

the property lines is an array that should contain multiple arrays, however, as you can see, lines is an array of strings. How can I make each element in the lines property to be an array of objects?

Thanks

Answer 1

There are a couple of errors with your json (I dont know if that is the actual json or it was hardcoded so you might check it). The first one is

• 'line:'3007621h7s2 should be 'line':3007621h7s2
• Values like 3007621h7s2 should be '3007621h7s2'

When you fix your json, then you can use JSON.parse() to convert the string

 var data = { "response": { "lines": [ "[{'line':'3007621h7s2', 'type': 'national'},{'line':'3007663f7s9','type':'international'}]", "[{'line':'3007262p7f6', 'type': 'national'},{'line':'3007262a0s1','type':'international'}]" ] } } data.response.lines = data.response.lines.map(a=>JSON.parse(a.replace(/'/g,'"'))) console.log( data ) 

Answer 2

The easiest way to convert the strings to arrays is to eval() them.

 var obj = { "response": { "lines": [ "[{'line':'3007621h7s2','type':'national'},{'line':'3007663f7s9','type':'international'}]", "[{'line':'3007262p7f6','type':'national'},{'line':'3007262a0s1','type':'international'}]" ] } } obj.response.lines = obj.response.lines.map(line => eval(line)); console.log(obj);