Run JQuery Function on Page Load and Store the Result - function

Question

I've got a script that hides most of the page when you first load the webpage.
When it does this, I want it to run a function which gets the current date, then saves it.
I've having trouble getting to do this for a few reasons.
Here is the page load code, where it hides the page if it's not been setup:
$(document).ready(
function() {
if (setup=="true") {
$("#show-page").show();
loadSetup();
} else {
$("#page-nav").hide();
}
});
Here is the date function:
function getStartDate() {
var today = new Date();
var dd = today.getDate();
var mm = today.getMonth();
var yyyy = today.getYear();
var startDate = dd + (mm * 30) + (yyyy * 360)
//edit
// return startDate
$("#start-date").val(startDate);
localStorage.startDate = $("#start-date").val();
}
I then want an if function in the first part of the loading page which says if the stored start date + 30 is less than the current date, show a message that gives them an updated url (isNewUrlNeeded()).
This was my attempt:
$(document).ready(
function() {
if (setup=="true") {
$("#show-page").show();
loadSetup();
isNewUrlNeeded();
} else {
$("#page-nav").hide();
getStartDate();
}
});
The problem here is that the getStartDate value isn't stored and I'm not sure how to store it. The reason it needs to be stored is so I can call on it later in the function isNewUrlNeeded.
Any help would be greatly appreciated.
Thank you!
Kind Regards,
Gary

Answer 1

You can try this :
function getStartDate() {
var today = new Date();
var dd = today.getDate();
var mm = today.getMonth();
var yyyy = today.getYear();
var startDate = dd + (mm * 30) + (yyyy * 360)
$("#show-page").data("start-date", startDate);
}
To retrieve this date you could do the follow :
var startDate = $("#show-page").data("start-date");