/** * * @param key * @param makeNumber [0 = nothing ,1 = integer, 2 = float] * @returns {any[]} */ Array.prototype.subItem = function (key, makeNumber = 0) { return this.map(item => { if (makeNumber == 2){ return parseFloat(item[key]); }else if(makeNumber == 1){ return parseInt(item[key]); }else{ return item[key]; } }); };