I've got the following code for a jquery timer plugin. The compiler gives me the error: "Type 'number' is not assignable to type 'Date'"

$(function(){
    var note = $('#note'),
        ts = new Date(2012, 0, 1),
        newYear = false;

    if((new Date()) > ts){
        ts = (new Date()).getTime() + 24*60*60*1000; //counting 24 hours
        newYear = false;
    }   

});


        });

    };

I've got the following code for a jquery timer plugin. The compiler gives me the error: "Type 'number' is not assignable to type 'Date'"

$(function(){
    var note = $('#note'),
        ts = new Date(2012, 0, 1),
        newYear = false;

    if((new Date()) > ts){
        ts = (new Date()).getTime() + 24*60*60*1000; //counting 24 hours
        newYear = false;
    }   

});


        });

    };

• javascript
• jquery
• typescript

• In ts = new Date(2012, 0, 1), ts is a date, but in ts = (new Date()).getTime() + 24*60*60*1000; ts is a number. May I suggest you to use momentjs to "play" with date? – user180100 Commented Sep 11, 2016 at 9:17

3 Answers 3

You need to create a new instance of Date:

if((new Date()) > ts){
    ts = new Date((new Date()).getTime() + 24*60*60*1000);
    newYear = false;
}

This way ts is assigned with a new Date with the given time.
Also, there's no need to create two instance of Date for now, you can just put it in a variable an reuse it:

$(function(){
    var note = $('#note'),
        ts = new Date(2012, 0, 1),
        newYear = false,
        now = new Date();

    if(now > ts){
        ts = new Date(now.getTime() + 24*60*60*1000);
        newYear = false;
    }   
});

When assigning variables in typescript it can help to assign the type explicitly to avoid any confusion. When assigning:
ts = new Date(2012, 0, 1)
you avoided declaring what type ts was and left it up to the "compiler". If you had tried:
var ts : number = new Date(2012, 0, 1);
for example (I know this takes up more space, sorry), you would have gotten as similar error.
To get around this, you either need a new variable for your declaration:
ts = new Date(now.getTime() + 24*60*60*1000);
Or more cleanly, you avoid declaring ts and construct:
var note = $('#note')
after you have decided what types all the values will be. Something like:
if(new Date() > (new Date(2012, 0, 1))
and decide from there how your "note" object will be formed.

let oneweek = new Date((new Date()).setDate(today.getDate() + 7));
let twoweek = new Date((new Date()).setDate(today.getDate() + 14));
let onemonth = new Date((new Date()).setDate(today.getMonth() + 1));
let threemonth = new Date((new Date()).setDate(today.getMonth() + 3));