Ajax noob...

[ChaosKnight]

Hi, I'm an Ajax noob and I don't know how it works yet,

in the webpage that I'm busy with there are 4

select dropdowns, the first is for countries, second for

provinces, third for towns and the last is for the hotels

that match all previous criteria...

 

The province should only display if the country global var

is 'southafrica', and the dropdowns should auto-generate

relative content from the database, I tried jQuery solutions

but none that I found does this very specific task, the

database will soon have thousands of entries so it should

be as dynamic as possible

 

Please help

 

I tried this function but it did absolutely nothing:

function getProvince(country)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url="getprovince.php";
url=url+"?country="+country;
xmlhttp.onreadystatechange=stateChanged;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}

 

And this was how I called it:

<select id='countrySelect' name='country' onchange='getProvince(this.value);'>

 

Can you please also guide me in the right direction

for all the other select dropdowns?

 

Thanks a lot!

[dhvani]

Hi ,

 

You are missing some minor but important things .

 

I can say here but i recommend you to find the ajax code on http://www.w3schools.com/ajax/default.asp or related tutorial.

 

They will teach you from base.

So you get clear idea on how to use ajax ?

 

Its not hard but tricky.

 

Try out your self if dont get ready to help