I want to have the max date from the list of dates given in the handleClick function. How to find the max date from the list of dates using moment.j
You can use moment.max function :
let moments = this.state.dates.map(d => moment(d)), maxDate = moment.max(moments)
Sort them with a custom compartor, then select the first one (or last, try it out);
array.sort(function(d1, d2) { return moment(d1).isBefore(moment(d2)); });