凱開 x 慵懶日子

--- hour 加減 ---

Date.prototype.addHours = function( h ){
    this.setHours(this.getHours() + h );
    return this;
}

addHours(5); //這樣就會加五個小時喔XDD

--- 取得 每個 ---

會用到這個，是因為好多地方用到但又不一樣格式XDDD

let date_item = {
    year: d.getFullYear(),
    month: ((d.getMonth() + 1) < 10 ? '0' : '') + (d.getMonth() + 1),
    day: (d.getDate() < 10 ? '0' : '') + d.getDate(),
    hour: (d.getHours() < 10 ? '0' : '') + d.getHours(),
    min: (d.getMinutes() < 10 ? '0' : '') + d.getMinutes()
};

--- 增加1天 ---

感覺跟第一個hour加減很像

var date = new Date();

// add a day
date.setDate(date.getDate() + 1);

--- 設定hour為00:00 ---

var d = new Date();
d.setHours(0,0,0,0);

以此類推

var d = new Date();
d.setSeconds(0,0,0,0);