Convert a C# DateTime to JavaScript DateTime [duplicate]

Question

I am trying to convert a C# DateTime variable into something that is able to be passed into a Javascript function through NewtonSoft.Json.

At the moment what I am using is:

var jsonSettings = new JsonSerializerSettings();
jsonSettings.DateFormatString = "dd/MM/yyy hh:mm:ss";
string modelFromDate = JsonConvert.SerializeObject(@Model.FromDate, jsonSettings);

However this does not seem to be working since when I use Chrome Dev Tools I get the error that

modelFromDate is not defined

in the following code:

$(".go").on("click", function () {
    if (new Date(modelFromDate) < new Date(1994, 1, 1)) {
        alert("invalid date");
    }
});

I am using ASP.NET Core MVC.

TanvirArjel · Accepted Answer · 2019-01-31 04:02:39Z

0

modelFromDate is not defined

This is because you did not use @ simple before the C# variable accessing in JavaScript.

Morevoer you can use Date.parse. It will return number of milliseconds, then you need to wrap a Date constructor around it as follows:

$(".go").on("click", function () {
    var jsFromDate = new Date(Date.parse(@modelFromDate));
    if (jsFromDate  < new Date(1994, 1, 1)) {
        alert("invalid date");
    }
});

edited Jan 31, 2019 at 4:02

answered Jan 31, 2019 at 3:30

TanvirArjel

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4 Comments

Tyler Roper Over a year ago

OP's problem is not formatting the date, it's "modelFromDate is not defined". From what I can tell they're declaring the date variable in C# and trying to access it in JavaScript.

TanvirArjel Over a year ago

"modelFromDate is not defined" this is because he did not use @ simple before the variable accessing in javascript.

Zoe Over a year ago

Hey, I've tried adding a @ and it made no difference

TanvirArjel Over a year ago

@Zoe Have debugged it properly to see the value of modelFromDate in js code?

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