Javascript--This doesnt work in internet explore please help me fix this.

Ex time12= "9 : 00 PM"

Ex time12= "10 : 45 AM"

function convertTime12to24(time12h) { var [time, modifier] = time12h.split(' '); var [hours, minutes] = time.split(':'); if (hours === '12') { hours = '00'; } if (modifier === 'PM') { hours = parseInt(hours, 10) + 12; } return hours + ':' + minutes; }