OK, so the real question here is a bit different from the question I've been trying to answer. :-)
In general JavaScript coding, what I've been saying is true: If you want to write code that uses data downloaded by a $.ajax call, you need to put that code in a function called from the $.ajax success callback - or in the callback itself. However, what you're doing is using the validation plugin to validate a form. So the question in this specific case is "how do I get the validator plugin to validate based on data downloaded via an ajax call", right? The validator plugin has a specific interface built in for this. Instead of calling $.ajax yourself and trying to somehow get the validation plugin to use that data, you use the validation plugin's own 'remote' property, which will make the $.ajax call for you. Documentation and examples: http://docs.jquery.com/Plugins/Validation/Methods/remote#options Let me know if that helps! -Mike On Mon, Dec 14, 2009 at 9:33 AM, Jojje <jojjsus_chr...@hotmail.com> wrote: > Ok, yes you can check it out at > http://www.sonicconnection.se/se/index.php?site=_misc/register > > It´s in swedish but its the first field that uses the code to check if > the username already exists, it makes a call to a php script and the > response is equal to the username if it exists in the database, and if > it does'nt exist it returns nothing. > > I put the parts of the script thats for the registration at the top > and commented it. the script file is sc_functions.js > > Its a lot of repetetive code int there that i havent made into > fuctions yet so you know haha :) > > Thanks again :) > > George > > On 14 Dec, 18:15, Michael Geary <m...@mg.to> wrote: > > Looks like we have two threads going on the same topic. :-) > > > > To give you a real code example, I'd need to see the code that makes use > of > > that 'result' variable you're setting. Where is that code and what does > it > > look like? > > > > The bottom line is simple: whatever the code is that uses the 'result' > > variable, that code needs to be made into a function, and you need to > call > > that function in the ajax success callback. Or, that function can *be* > the > > success callback. > > > > You can't just set a variable in an asynchronous callback and expect > other > > code somewhere else on the page to somehow "know" when your variable is > > ready for use. > > > > It's not a question of "how far deep in nested functions can you return a > > value". Any nested function can return a value; it doesn't matter how far > > deeply your functions are nested. But that return value goes only to > > *whoever called that function*. In the case of a $.ajax callback, the > return > > value is being passed back into the $.ajax code, which probably ignores > the > > value completely. > > > > The real issue is *when* the code is run. > > > > Can you post a URL to a complete test page? That would make it a lot > easier > > to suggest the right way to write your code. > > > > -Mike > > > > On Mon, Dec 14, 2009 at 5:48 AM, Jojje <jojjsus_chr...@hotmail.com> > wrote: > > > Hi! Yeah i got that tip before but i'm not sure i understand this. > > > Could you perhaps give me an example with the code below :) > > > > > regards > > > > > George > > > > > On 14 Dec, 14:27, Rick van Hoeij <rickvho...@gmail.com> wrote: > > > > because of the async of javascript I normally use callback functions > > > > to do the value passing. So instead of return true or return false in > > > > a ajax function, it's better to call a function with the true or > false > > > > as a parameter. > > > > > > Just my two cents ;) > > > > > > On 12 dec, 20:24, Jojje <jojjsus_chr...@hotmail.com> wrote: > > > > > > > How deep in the scope can you go in nested functions and still > return > > > > > a value? For example: > > > > > > > $.validator.addMethod('userCheck', function (value) { > > > > > $.ajax({ > > > > > type: "POST", > > > > > url: "_scripts/send_message.php", > > > > > data: "action=checkuser& username=" + value, > > > > > success: function(msg) { > > > > > if (msg) { > > > > > return false; > > > > > } > > > > > else { > > > > > return true; > > > > > } > > > > > } > > > > > }); > > > > > > > },""); > > > > > > > Why is´nt this working? > > > > > > > If i do this: > > > > > > > //Global > > > > > var result; > > > > > > > $.validator.addMethod('userCheck', function (value) { > > > > > $.ajax({ > > > > > type: "POST", > > > > > url: "_scripts/send_message.php", > > > > > data: "action=checkuser& username=" + value, > > > > > success: function(msg) { > > > > > if (msg) { > > > > > result = false; > > > > > } > > > > > else { > > > > > result = true; > > > > > } > > > > > } > > > > > }); > > > > > return result; > > > > > > > },""); > > > > > > > i get the value back but it does not work properly, It gets the > value > > > > > from the textfield but on keyup it's always one letter short... so > i > > > > > have to type one more letter to get the right value. I´m stuck on > this > > > > > so any help would be greatly appreciated! :) > > > > > > > Thanks in advance > > > > > > > George >
