Ways to verify if JSON.parse fails or yields a falsy outcome

Objective:

const jsonData = JSON.parse(this.description) ? JSON.parse(this.description) : null

When executing the above statement, my aim is to have the ability to parse a value successfully and return null if parsing fails. However, instead of achieving this desired behavior, I encounter an error message indicating Unexpected token at ..... This error occurs because I am passing in data that cannot be parsed. My goal is to handle this scenario gracefully by returning a falsy value such as null rather than breaking the application entirely.

What I've Tried:

function checkParse(jsonString) {
  try {
    return JSON.parse(jsonString);
  } catch (error) {
    return null;
  }
}

checkParse(description);

Unfortunately, the above code snippet results in an error stating Unexpected token l

Answer №1

One approach is to verify the variable type prior to performing any parsing operations.

if(typeof this.content === "string") {
    result = JSON.parse(this.content);
} else {
    result = null;
}

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