check if string is json parsable

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1var isJsonParsable = string => {
2    try {
3        JSON.parse(string);
4    } catch (e) {
5        return false;
6    }
7    return true;
8}

1function IsJsonString(str) {
2    try {
3        JSON.parse(str);
4    } catch (e) {
5        return false;
6    }
7    return true;
8}

1Uncaught SyntaxError: Unexpected token c in JSON at position 1

1if (/^[\],:{}\s]*$/.test(text.replace(/\\["\\\/bfnrtu]/g, '@').
2replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']').
3replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {
4
5  //the json is ok
6
7}else{
8
9  //the json is not ok
10
11}
12

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