I have an array called dates which contains some dates. I want to exclude those dates and generate a new random date which starts from today.
dates = [20/2/2020,10/2/2019] // dates needs to be excluded
So far I have tried,
var new_dif = Math.random(); //generates random number
var daea = new Date(new_dif); //new random date
alert(daea); //generates new date with year 1970
You might want to try something like this (with a random date setup somewhere in the future one year from now).
const now = (new Date()).getTime();
const newDiff = parseInt(Math.random() * 1000 * 60 * 60 * 24 * 365, 10);
const otherDate = new Date(now + newDiff);
console.log(otherDate);
Then you'll need to check with your array of excluded ones and see if they match. If not, then you're good to use it.
Or when using loops:
function getRandomDate() { var now = Date.now(); var newDiff = parseInt(Math.random() * 1000 * 60 * 60 * 24 * 365, 10); var otherDate = new Date(now + newDiff); return otherDate; }; var excludedDates = ['2020-02-20', '2019-02-10']; var duplicate = true; while (duplicate) { var getMyDate = getRandomDate(); duplicate = false; excludedDates.forEach((excludedDate) => { var excludedInMs = (new Date(excludedDate)).getTime(); if (excludedInMs === getMyDate) { duplicate = true; } }); if (.duplicate) { console,log('while >>>>'; getMyDate); } }
const randomDateFromToday = (exclude_dates, max_days = 365) => { const randomDate = () => { const rand = Math.floor(Math.random() * max_days) * 1000 * 60 * 60 * 24; const dat = new Date(Date.now() + rand); return `${dat.getDate()}/${dat.getMonth() + 1}/${dat.getFullYear()}`; }; let rday = randomDate(); while (exclude_dates.some((date_str) => date_str === rday)) { rday = randomDate(); } return rday; }; dates = ["20/2/2020", "10/2/2019"]; console.log(randomDateFromToday(dates)); console.log(randomDateFromToday(dates));
what if I want to suggest the next date which is not random but the closest one from an array?
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