Passing a date from asp to a javascript function

Question

I am retrieving a date from a database in ASP vbscript and want to pass it on to a javascript function (and use it in date format).

I tried converting my date to a CDate in ASP, passing that on to my javascript function and making a javascript out of it by use of the Date(ASPDate). When doing that, I always get the error "missing ) after argument list" since there is a space between the day and the time.

relevant code:

CreateTimeStart(" & dteActualStartTime & ")

function CreateTimeStart(dteActualStartTime){
    timestart = Date(dteActualStartTime);
}

Alex · Accepted Answer · 2012-02-20 16:53:40Z

1

Use the Date.parse method:

CreateTimeStart('<%= dteActualStartTime %>');

function CreateTimeStart(dteActualStartTime){
    var timestart = Date.parse(dteActualStartTime);
}

https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Date/parse

answered Feb 20, 2012 at 16:53

Alex

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Comments

user447356 · Accepted Answer · 2012-02-21 16:10:10Z

1

You can't know the date settings on the client machine, so you can't depend on them to be the same as on your server.

One way around is to pass the amount of miliseconds that passed since January 1^st 1970 to create the date instance:

<script type="text/javascript">
    var dteActualStartTime = new Date(<%=(DateDiff("s", "1/1/1970", dteActualStartTime)) * 1000%>);
    alert("date from server: " + dteActualStartTime);
</script>

This way you don't care if the client machine got dd/mm/yyyy, mm/dd/yyyy or anything else - you pass pure number and let the client machine parse it.

answered Feb 21, 2012 at 16:10

user447356

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