Sort a JSON Array by a key

json-sort-by-key.js

function GetSortOrder(prop) {  
    return function(a, b) {  
        if (a[prop] > b[prop]) {  
            return 1;  
        } else if (a[prop] < b[prop]) {  
            return -1;  
        }  
        return 0;  
    }  
}
Array.prototype.sortBy = function(key){
  return  this.sort( (a,b) => ( ( a[key] < b[key] ) ? -1 : ( ( a[key] > b[key] ) ? 1 : 0 ) ) ) 
}
//.sort( (a,b) => ( ( a[key] < b[key] ) ? -1 : ( ( a[key] > b[key] ) ? 1 : 0 ) ) );