JAVASCRIPT

javascript check if string is json parsable

var isJsonParsable = string => {
    try {
        JSON.parse(string);
    } catch (e) {
        return false;
    }
    return true;
}

check if string is json parsable

if (/^[],:{}s]*$/.test(text.replace(/["/bfnrtu]/g, '@').
replace(/"[^"

]*"|true|false|null|-?d+(?:.d*)?(?:[eE][+-]?d+)?/g, ']').
replace(/(?:^|:|,)(?:s*[)+/g, ''))) {

  //the json is ok

}else{

  //the json is not ok

}