append to json file code example

Example 1: push json into json

//create object
var myObj = {
    "artist" : artist,    //your artist variable
    "song_name" : title   //your title variable
};
//push the object to your array
favorites.push( myObj );

Example 2: add new element to existing json object

json = JSON.stringify(jsObj);
 console.log(json)