javascript get hours difference between two dates
// date1 and date2 are date objects
let hours = Math.abs(date1 - date2) / 36e5;
// The subtraction returns the difference between the two dates in milliseconds.
// 36e5 is the scientific notation for 60*60*1000, dividing by which converts
// the milliseconds difference into hours.calculate years hours minutes and seconds js
function formatDuration (seconds) {
if ( seconds === 0 ) return 'now' ;
var typeArr = ['year','day','hour','minute','second'] ;
var sec = 0 ;
var minute = 0 ;
var hour = 0 ;
var day = 0 ;
var year = 0 ;
minute = Math.floor(seconds / 60) ;
sec = seconds % 60 ;
hour = Math.floor(minute / 60) ;
minute = minute % 60 ;
day = Math.floor(hour / 24) ;
hour = hour % 24 ;
year = Math.floor(day / 365) ;
day = day % 365 ;
var resultArr = [year,day,hour,minute,sec] ;
var resultStrArr = [] ;
for ( var i = 0 ; i < resultArr.length ; i ++ ){
if ( resultArr[i] === 1 ){
resultStrArr.push(resultArr[i]+' ' + typeArr[i]) ;
} else if ( resultArr[i] >= 2 ){
resultStrArr.push(resultArr[i]+' ' + typeArr[i]+'s') ;
}
}
var resultStr = '' ;
for ( var i = 0 ; i < resultStrArr.length ; i ++ ){
if ( i === resultStrArr.length - 2 ){
resultStr += resultStrArr[i] + ' and ' + resultStrArr[i+1] ;
break ;
}
if ( i !== resultStrArr.length -1 ){
resultStr += resultStrArr[i] + ', ' ;
} else {
resultStr += resultStrArr[i];
}
}
return resultStr ;
}Copyright © 2021 Codeinu
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