Function isBefore

isBefore(date1, date2, checkTime?): boolean
JMap.Util.Date.isBefore

Returns true if the first date is before the second date.
Parameters
- date1: JDateLike
  Date object, or ISO string, or timestamp number
- date2: JDateLike
  Date object, or ISO string, or timestamp number
- Optional checkTime: boolean
  if true will also check the date time, else check only the date
Returns boolean
Throws
if dates are not Date object, or ISO string, or timestamp number

Example
```
// returns in the user's locale language, the time that will pass, or passed from now for the given date
const firstDate = new Date()
setTimeout(() => {
 const secondDate = new Date()
 // will return false
 JMap.Util.Date.isBefore(firstDate, secondDate)

 // will return true (because also check the time)
 JMap.Util.Date.isBefore(firstDate, secondDate, true)
}, 1000)
```