Hi,
I need to set form elements, radio button, select boxes and of course
text boxes to their default values what I load from a DB
document.getElementById(Ba
Also what is the easiest way to send a string back to the db using JS?
I do have db connection in a class and I am currently calling this method
ProcessArgs.dbUpload(field
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Please don't kill me here:)
I am using C# and I do want to get rid of that stupid page refress blinking flashing
plain ugly thing IE does at postBack.
I get all my server vars at page load and then I move to client.
Vals I change on the form I need to upload to the db when the selection controls
an other html element and here is where that hype of XmlHttpRequest() comes into the picture.
So I need to set all my form vars from the db and then I submit them back to the db.
If you're just sending a string, surely it's just an argument in the [WebService] function you've made in C# and bound the XmlHttpRequest() to? Or are you serializing the class and sending that back and forth to the server? Either way JavaScript can't serialize a whole class in the way .NET does (ie make a lovely XML representation of the class in it's current state) without a whole XML engine built in JS (overkill), but a few people serialize a bunch of variables in a kind of querystring format like:
webservice.aspx?var1name=v
and similarly, when the callback comes back, you can either read the proper XML output in JavaScript or simply get the server to build a similar string that JavaScript can also read.
Alternatively, just turn off postback completely, and go old-school, relying on the submit button being pressed to 'save' the data back...
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by: ZvonkoPosted on 2006-08-18 at 08:38:40ID: 17343234
You CANNOT do that.
The page containing JavaScript statements is executed on browser side. And the db is normaly on server side. Browser and therefore JavaScript cannot access ANYTHING on server side. All that browser can do is request a page by URL and post form data. Nothing else. Therefore is AJAX such a hype because it does that URL calls and form submitts in the beground and giving the user the feeling browser can do more then getting URLs and sending form data.
So sorry, you never will get a database connection in browser to a remote database.
For that what you want to do is server side scriptiong, not JavaScript. Your web server needs to have CGI, Perl, ASP, PHP, JSP or any other server side scripting language to preset the html values from db records.