how to compare two string dates in javascript?

Question

I have two string dates in the format of m/d/yyyy. For example, “11/1/2012”, “1/2/2013”. I am writing a function in JavaScript to compare two string dates. The signature of my function is bool isLater(string1, string2), if the date passed by string1 is later than the date passed by string2, it will return true, otherwise false. So, isLater(“1/2/2013”, “11/1/2012”) should return true. How do I write a JavaScript function for this?

Answer 1

var d1 = Date.parse("2012-11-01"); var d2 = Date.parse("2012-11-04"); if (d1 < d2) {     alert ("Error!"); } 

Demo Jsfiddle

Recently found out from a comment you can directly compare strings like below

if ("2012-11-01" < "2012-11-04") {     alert ("Error!"); }