I know this is a PHP forum, but thought some of you may be able to offer help with the Javascript portion as well.
I'm running Ajax validation on a form I have, and the following is my javascript file. It runs fine, except for the statechangedFname portion. You can see its different from the other statechanged, as I added a nested if statement:
Code:
if (xmlhttp.status == 200) {
This is standard in Ajax, to see if the response is "ok." For some reason, the javascript stops reading once it gets to a nested if statement inside my functions! It doesn't matter if I have
Code:
var test=1
if (test==1) {
which is obviously true, it stops reading. If I have any code below (not in) the if statement, those are not read either.
I don't understand why, as it should work, correct?
The Javascript code is taken from a w3 demo, I edited it a bit to fit my needs.
Thanks!
Code:
// JavaScript Document
var xmlhttp;
function checkAjaxAlpha(str , id)
{
str = encodeURIComponent(str);
if (str.length==0)
{
//Check ID, output to correct Document ID
if (id=="Fname") {
document.getElementById("alpha_check_fname").innerHTML="";
}
if (id=="Lname") {
document.getElementById("alpha_check_lname").innerHTML="";
}
if (id=="City") {
document.getElementById("alpha_check_city").innerHTML="";
}
return;
}
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
{
alert ("Your browser does not support XMLHTTP!");
return;
}
var url="../users/form_checks/alpha.php";
url=url+"?q="+str;
url=url+"&sid="+Math.random();
if (id=="Fname") {
xmlhttp.onreadystatechange=stateChangedFname;
}
if (id=="Lname") {
xmlhttp.onreadystatechange=stateChangedLname;
}
if (id=="City") {
xmlhttp.onreadystatechange=stateChangedCity;
}
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
}
function stateChangedFname()
{
if (xmlhttp.readyState==4)
{
if (xmlhttp.status == 200) {
document.getElementById("alpha_check_fname").innerHTML=xmlhttp.responseText;
}
}
}
function stateChangedLname()
{
if (xmlhttp.readyState==4)
{
if(xmlHttpRequest.status==200){
document.getElementById("alpha_check_lname").innerHTML=xmlhttp.responseText;
}
}
}
function stateChangedCity()
{
if (xmlhttp.readyState==4)
{
document.getElementById("alpha_check_city").innerHTML=xmlhttp.responseText;
}
}
function GetXmlHttpObject()
{
if (window.XMLHttpRequest)
{
// code for IE7+, Firefox, Chrome, Opera, Safari
return new XMLHttpRequest();
}
if (window.ActiveXObject)
{
// code for IE6, IE5
return new ActiveXObject("Microsoft.XMLHTTP");
}
return null;
}
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AJAX Nested If Statement Error
02-19-10, 22:28
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