CODEWITHSUNDEEP
javascript
James0419
James0419

Reputation: 123

How to compare two string variables with javascript?

I have issue when compare the two strings (both are variable meaning it could be any dates) The format of those two strings are yyyy-MM-dd.

I have two strings dates "string1" and "string2", and string1 one using date format yyyy-MM-dd and string 2 using the same format yyyy-MM-dd. What should I use if I want to compare it with the logic when string1 < string2 return string result as "X"

What I current have which not working first I try to use .substring to get the right format from string 1. 

var string1 = str1.substring(0, 5) + str1.substring(5, 8) + str1.substring(8, 11);
var string2 = str2

if (string1 < string2) {
dateresult= 'X';
}

Any idea will be appreciated.

Thanks in advance.

Upvotes: 1

Views: 185

Answers (2)

Mitchell Simoens
Mitchell Simoens

Reputation: 2536

Create Date objects and use comparison on them:

var date1 = new Date('2015-01-01'),
    date2 = new Date('2015-01-01');

console.log(date1 < date2);
console.log(date1 >= date2);

Upvotes: 1

Maximillian Laumeister
Maximillian Laumeister

Reputation: 20399

Just construct new dates for each one, then compare them.

var x = new Date('2013-05-23');
var y = new Date('2013-05-24');
alert(x < y); //true

Upvotes: 1

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