I am trying to check if the given url is working or not using ajax. So i modified the Ajax a little bit.
function isServerAlive()
{
var xmlhttp;
if (window.XMLHttpRequest)
{
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{
// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4)
{
document.getElementById("myDiv").innerHTML=xmlhttp.status;
}
}
xmlhttp.open("GET","wrongurl",true);
xmlhttp.send();
}
All i want to do is it to display the xmlhttp.status as 404 or 503 when the url is wrong. But it is not printing. Any suggestions?
You have status code available in .status and the text in .statusText
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState == 4)
console.log("Code: " + xmlhttp.status + "Status text: " + xmlhttp.statusText);
}
a respone object is passed to the xmlhttp events, so use this instead:
xmlhttp.onreadystatechange=function(r) {
if (r.readyState == 4) {
document.getElementById("myDiv").innerHTML = r.status;
}
}
I don't think you'd be able to use XHR to check if url is working, as the url has to be from the same origin as the original page. First check if your solution works correctly when accessing a local url.
Related
in a webpage i would like to collect a response from another web server at a given URL address.
let's say someone else has a server at http://mysite/123 that responds with a simple string. (without headers and stuff).
what is the most SIMPLE way to get javascript on my webpage to collect a url's raw response in preferably a byte array variable? though i would except an answer that saves in string to get me going. this is an exact copy paste from my html document and its not working for me.
thanks!
<script>
var txt = "";
txt=httpGet("https://www.google.com");
alert(txt.length.toString());
function httpGet(theUrl) {
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
return xmlhttp.responseText;
}
}
xmlhttp.open("GET", theUrl, false);
xmlhttp.send();
}
</script>
So I'd have to say your best bet would be to look into making an HTTP (or XHR) request from javascript.
check: Return HTML content as a string, given URL. Javascript Function
function httpGet(theUrl)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
return xmlhttp.responseText;
}
}
xmlhttp.open("GET", theUrl, false );
xmlhttp.send();
}
I done a ajax call to local http server but I got error in xmlhttp.open("GET", "http://localhost//push", true); incorrect function in IE 11, Below is my full code:
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
....some code.....
}}
}
xmlhttp.open("GET", "http://localhost//push", true);
xmlhttp.send();
}
IE uses new XMLHttpRequest();
Finally i got the answer very silly issue, In chrome URL can be "http://localhost//push" but in IE it should have backslash instead of forward slash "http:\\localhost\\push" or else it will show incorrect function
Currently, I cannot load the second content using ajax. Actually, I have loaded the first content using ajax. In order to go to the second content, i need to call the ajax function but after i click to load the second content using ajax it does not work. I have checked my code, its working fine if i directly call the second ajax function, unless i call the first ajax function after that the ajax is not working again. Are there any ways to solve this problem.
This is the first ajax code:
function showMusic(str) {
if (str == "") {
document.getElementById("albums").innerHTML = "";
return;
} else {
if (window.XMLHttpRequest) {
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("albums").innerHTML = xmlhttp.responseText;
}
};
xmlhttp.open("GET","getAlbums.php?q="+str,true);
xmlhttp.send();
}
}
The above function works. The above function is at another php file
This is the second ajax code:
$(document).ready(function(){
function showArtistDetails(str) {
if (str == "") {
alert("hi");
document.getElementById("artist").innerHTML = "";
return;
} else {
if (window.XMLHttpRequest) {
alert("hi1");
// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
} else {
alert("hi2");
// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("artist").innerHTML = xmlhttp.responseText;
alert("hi3");
}
};
xmlhttp.open("GET","getArtist.php?title="+str,true);
alert("hi4");
xmlhttp.send();
alert("hi5");
}
}
$("#clickme").click(showArtistDetails);
});
This is the php code which is at another php file:
echo "<td id=\"clickme\">" . $row['CDTitle'] . "</td>";
I have been trying to solve this for the past 2 days but i am unable to solve it. Some are saying its a bug. But i really i dont know what causes this problem. Thanks in advance.
I keep running the following code but keep getting the "Bad connection" alert pop up, meaning I didn't get a successful response code.
Does anyone see anything wrong with the following script?
function process(){
URL = document.getElementById("userInput").value;
var xmlhttp;
if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp = new XMLHttpRequest();
}
else {// code for IE6, IE5
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function() {
if (xmlhttp.readyState==4 && xmlhttp.status==200) {
document.getElementById("Response").innerHTML=xmlhttp.responseText;
alert("Successful connection!");
}
else {
alert("Bad connection!");
}
}
xmlhttp.open("GET", URL, true);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
}
The readyState passes through a number of other states (opened, sent, headers received, loading) before reaching state 4 (done). Each time the event fires, you'll get the Bad Connection alert until it is successful.
You probably want something more like:
if (xmlhttp.readyState==4) {
if (xmlhttp.status==200) {
document.getElementById("Response").innerHTML=xmlhttp.responseText;
alert("Successful connection!");
} else {
alert("HTTP error: " + xmlhttp.status);
}
}
I want to get an automatic search result, and on one page it DOES work but on the other NOT. Could you tell me what te problem is?
WORKING:
function showUser(str)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","ordertabel.php?search="+str,true);
xmlhttp.send();
}
NOT WORKING:
function showUser(str,str)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","klanttabel.php?search="+str"&search2="+str,true);
xmlhttp.send();
}
Please note that with the NOT working code there are 2 inputs.
Thanks in advance!
I guess it's an url encoding problem. Try encoding:
xmlhttp.open("GET", "klanttabel.php?search=" + encodeURIComponent(str) + "&search2=" + encodeURIComponent(str), true);
Also notice that you are missing a + in your string concatenation.
Probably because you use two variables in your function method with the same name and you are missing a PLUS sign in your xmlhttp.open() method...
Try:
function showUser(str, str2) {
...code...
xmlhttp.open("GET", "klanttabel.php?search="+str+"&search2="+str2, true);
xmlhttp.send();
}
Another suggestion, making Ajax calls is way easier when using JQuery.
$.ajax({
type: "GET",
url: "klanttabel.php",
data: ({search : str,
search2 : str2}),
success: function(data) {
$('#txtHint').html(data);
}
});
Your parameters are named the same... change them.
function showUser(strA,strB)
and change them later in the function:
xmlhttp.open("GET","klanttabel.php?search=" + strA + "&search2=" + strB,true);
You also had an error where a + was missing.
You are missing plus sign
xmlhttp.open("GET","klanttabel.php?search="+str"&search2="+str,true);
plus sign after first str
xmlhttp.open("GET","klanttabel.php?search="+str+"&search2="+str,true);