Transform a string (variable) into an object using JSON.parse, encountering an unexpected token error

I am struggling with parsing a string variable back to an object. Despite searching through various posts on this issue, I have not found a solution that works for me.

if(subMatch.match(/\{.*\}/)){          /// new Object of some sort

    var objStr=subMatch.match(/\{.*\}/)[0];
    //objStr= JSON.stringify(objStr);     // I tried this , no difference
    //objStr='"'+objStr+'"';         // Tried this way: unexpected token t
   //objStr="'"+objStr+"'";         // Tried this way: unexpected token '
    objStr=JSON.parse("'"+objStr+"'");  // puts out unexpected token '

The string in question is:

{"type": "lawnmowing","hours": 10,"rate": 10.5,"permanent": false}

Even though it is valid according to JSONLint, the addition of extra quotes changes its appearance to:

 '{"type": "lawnmowing","hours": 10,"rate": 10.5,"permanent": false}'                           

I came across this question related to JSON.Parse and 'Uncaught SyntaxError: Unexpected token o', but the variables discussed there are objects from the start. Mine is definitely a String. Adding literal single quotes around objStr should not be an issue since it's already a String, right? I've also attempted without the additional quotation marks altogether.

Do you have insights on how to properly use JSON.parse on a String variable? While eval works, it involves user input that needs to be converted into an object.

Your help would be greatly appreciated! Thank you, Jenita

Answer №1

According to CBroe, the function JSON.parse() is fully capable of parsing JSON data on its own and any additional steps you are taking may be hindering its performance.

There is no need for extra assistance. Simply allow the function to execute properly by removing unnecessary complications:

let parsedObj = JSON.parse(jsonString);

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