function compareStrTime( timeStart , timeEnd ) { var dateA = new Date("2018/10/11 " + timeStart); var dateB = new Date("2018/10/11 " + timeEnd); if(isNaN(dateA) || isNaN(dateB)) return null; if(dateA > dateB) { return 1; } if(dateA < dateB) { return -1; } return 0; };
compareStrTime('16:11','15:03') // 1