How to check if HTML sessionStorage is not empty?

Question

G'day guys,

I'm trying to figure out the best way to check for empty storageSession in HTML5.

I noticed that some browser returns null and some return just empty space if you clear or did not set any values to the sessionStorage.

I've tried the following

if (sessionStorage.getItem('value1') == "null" && sessionStorage.getItem('value2') == "null") {

But it doesn't seem to work.

Anyone got a better way to check if a sessionStorage is empty?

Appreciate your help on this and thank you in advance.

Answer 1

That should work; the problem is that you have null in quotes.

Also, sessionStorage.length will give you the number of values stored.

Answer 2

i checked this way

   $(document).ready(function () {
       if (window.sessionStorage) {
           if (sessionStorage.getItem("x-mas") === null) {
               if (getCountryCode() == 'de') {
                   $('#xmasModal').modal();
                   sessionStorage.setItem("x-mas", "1")
               }
           }
       }
   });

   function getCountryCode() {
       var url = window.location.pathname;
       var segments = url.split('/');
       var countrycode = segments[1];
       return countrycode;
   }