var OneDay = new Date(); var OneYear = OneDay.getFullYear(); var TwoYear = OneYear + 1; var newYear = new Date(TwoYear + “/1/1”).valueOf(); var newDays = new Date().valueOf(); var day = Math.ceil((newYear - newDays) / (60 * 60 * 24 * 1000) - 1); var comma = “ : ”; console.log(“来年の1月1日まであと” + comma + day + “日です”);