js获取今天，昨天，最近7天，最近30天的开始与结束的时间戳

	let toData = new Date(new Date().toLocaleDateString()).getTime()
	
	//今天
	let todayStart = toData //开始时间
    let todayEnd = todayStart + 24 * 60 * 60 * 1000 - 1 //结束时间
	//昨天
	let yesterdayStart = toData - 3600 * 24 * 1000 
	let yesterdayEnd = (yesterdayStart) + 24 * 60 * 60 * 1000 - 1
	//最近7天
	let past7daysStart = toData - 7 * 3600 * 24 * 1000
	let past7daysEnd = (past7daysStart) + 24 * 60 * 60 * 1000 - 1
	//最近30天
	let past30daysStart = toData - 30 * 3600 * 24 * 1000
	let past30daysEnd = (past30daysStart) + 24 * 60 * 60 * 1000 - 1