CODEWITHSUNDEEP
javascriptdatemaxconditional-statementsmin
Emilio
Emilio

Reputation: 1364

Conditional statement inside a Math.min or a Math.max in JavaScript

I want to Math.min a few Date values (e.g. var1.getTime(), var2.getTime(), and var3.getTime()). However, before I can use .getTime() on them, I need to make sure they exist (so the script doesn't crash).

If one of the variables doesn't exist I still want to get the Math.min of the other variables that exist.

Any clues?

Upvotes: 0

Views: 2039

Answers (1)

Rob M.
Rob M.

Reputation: 36511

If you store your date variables in an array, you can use filter to remove non-Date objects and pass that to Math.min.apply or Math.max.apply

const dates = [var1, var2, var3];
const min = Math.min(...dates.filter(date => date instanceof Date));

Or non-ECMAScript 6:

var dates = [var1, var2, var3];
var min = Math.min.apply(null, dates.filter(function(date) {
  return date instanceof Date;
}));

Upvotes: 3

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