JS中将日期對象轉換成日期格式字元串

1. 将日期對象轉成指定格式的日期字元串：

/**
 * @description 格式化日期函數
 */
export const formatDate = (date) => {
  var y = date.getFullYear();  
  var m = date.getMonth() + 1;  
  m = m < 10 ? '0' + m : m;  
  var d = date.getDate();  
  d = d < 10 ? ('0' + d) : d;  
  return y + '-' + m + '-' + d;  
}
           

2. 将日期對象轉換成指定格式的時間字元串：

/**
 * @description 格式化時間函數
 */
export const formatDateTime = (date) => {
  var y = date.getFullYear(); 
  var m = date.getMonth() + 1;  
      m = m < 10 ? ('0' + m) : m;  
  var d = date.getDate();  
      d = d < 10 ? ('0' + d) : d;  
  var h = date.getHours();  
      h=h < 10 ? ('0' + h) : h;  
  var minute = date.getMinutes();  
      minute = minute < 10 ? ('0' + minute) : minute;  
  var second=date.getSeconds();  
      second=second < 10 ? ('0' + second) : second;  
  return h+':'+minute+':'+second;   
}
           

3. 将日期對象轉成指定格式的日期時間字元串：

var formatDateTime = function (date) { 　　　　　
	var y = date.getFullYear(); 
	var m = date.getMonth() + 1;  
	m = m < 10 ? ('0' + m) : m;  
	var d = date.getDate();  
	d = d < 10 ? ('0' + d) : d;  
	 var h = date.getHours();  
	 h=h < 10 ? ('0' + h) : h;  
	var minute = date.getMinutes();  
	minute = minute < 10 ? ('0' + minute) : minute;  
	var second=date.getSeconds();  
	 second=second < 10 ? ('0' + second) : second;  
	return y + '-' + m + '-' + d+' '+h+':'+minute+':'+second; 
}