I am a novice in PHP and Javascript, and I am having some difficulties sending Google map bounds to a PHP that runs a SQL to find addresses within the bounds and generates an XML used to place markers.
I got some help to clean up my code, but the problem persists. The problem is either that my Javascript is not sending data to the PHP, or that the PHP is not reading the data in the proper manner.
PHP stops if I inlude this line (not actually being used yet in the PHP-file, other than this line:
$South = $_POST['South'];
Javascript function (North, South, East and West are defined and populated earlier in the js-file. Inserting alert(South) works, so I don't think that is the problem),
function downloadUrl(url, callback) {
var request = !window.XMLHttpRequest? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest; //changed this line to select the XMLHttpRequest by default and not use the activeX version when XMLHttpRequest is available.
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange;
callback(request, request.status);
}
};
request.open('POST', url, true);
request.send('South='+South+'&North='+North+'&West='+West+'&East='+East);
}
Add request.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); after request.open('POST', url, true);
It should be like this:
request.open('POST', url, true);
request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
request.send('South='+South+'&North='+North+'&West='+West+'&East='+East);
And replace if (request.readyState == 4) { with
if (request.readyState == 4 && request.status == 200) {
Then it will work.
Related
Is it possible to make a POSt request from a static website hosted on S3? Are there any workarounds?
Totally possible, just use XMLHttpRequest or add some lib (jquery) to help you with that:
<script>
var xhr = new XMLHttpRequest();
xhr.open("POST", '/server', true);
//Send the proper header information along with the request
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.onreadystatechange = function() { // Call a function when the state changes.
if (this.readyState === XMLHttpRequest.DONE && this.status === 200) {
// Request finished. Do processing here.
}
}
xhr.send("foo=bar&lorem=ipsum");
// xhr.send(new Int8Array());
// xhr.send(document);
</script>
https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/send
Hello I have already search but they often use jquery ajax to pass data from js to PHP(server-side). but for my project it has a bunch of pure js code so I should use raw AJAX to pass data.
For example, if I want to send a variable "Imgname" that value = 13 and want to echo in php page.
this is my try
<script>
if(window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if(xmlhttp.readyState === 4 && xmlhttp.status === 200) {
alert('send to server successfully');
}
};
xmlhttp.open("POST", "test2.php", true);
xmlhttp.send("Imgname=13");
}
</script>
in test2.php
<?php
$temp = $_POST['Imgname'];
echo $temp; /////output should be 13
?>
but error Undefined index: Imgname in C:\xampp\htdocs\test2.php on line 2
You need to make sure that you're sending the correct content-type:
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
Try sending the header:
var http = new XMLHttpRequest();
var url = "test2.php";
var params = "Imgname=13";
http.open("POST", url, true);
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
http.onreadystatechange = function() {//Call a function when the state changes.
if(http.readyState == 4 && http.status == 200) {
alert(http.responseText);
}
}
http.send(params);
I'm quite new to Alfresco and have been tasked with creating a rule that calls an external php script whenever a folder is created. There doesn't seem to be a lot of information out there that indicates that this is possible. I tried to create a script like the following, but I receive an "XMLHttpRequest not defined error":
function submitDoc(url, params){
var http = new XMLHttpRequest();
http.open("POST", url, true);
//Send the proper header information along with the request
http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
http.setRequestHeader("Content-length", params.length);
http.setRequestHeader("Connection", "close");
http.onreadystatechange = function() {
if(http.readyState == 4 && http.status == 200) {
logger.system.out("SUCCESS!");
}
else{
logger.system.out("Failure: "+http.status);
}
}
http.send(params);
}
submitDoc("/addPage.php", "var1=somevar");
Everytme when i call ajax and i use timeout to repeat the ajax function, after a few minutes, i can't have access to my website, it;s like my IP address gets blocked from my server, by the way i am using 000webhost for hosting my server. The code is below .Can someone assist me and tell me what i can do solve this problem without telling me to use websockets/comets, i want to use AJAX for very frequent update maybe up to 10 seconds. Not a most but it will be great if someone can show solutions without the use use of JQuery Thank you.
function display_message(user,id){
var xhr;
if (window.XMLHttpRequest) { // Mozilla, Safari, ...
xhr = new XMLHttpRequest();
} else if (window.ActiveXObject) { // IE 8 and older
xhr = new ActiveXObject("Microsoft.XMLHTTP");
}
/**********************************************************/
var data = "user="+user+"&id="+id;
xhr.open("POST", "message_read.php", true);
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.send(data);
xhr.onreadystatechange = display_data;
function display_data() {
if (xhr.readyState == 4) {
if (xhr.status == 200) {
document.getElementById("message_box").innerHTML =xhr.responseText;
mymessage =setTimeout(display_message(user,id), 5000);
} else {
alert('There was a problem with the request.');
}
}
}
}
The javascript code will be launched from www.example.com through the url bar in google chrome so i cannot make use of jquery. My goal is to pass the full html source code of www.example.com/page.html to a variable in javascript when i launch the code in www.example.com. Is this possible? If so how? I know to get the current page source it's just document.documentElement.outerHTML but i'm not sure how i'd do this. I think it's possible by using responseText somewhere in the following code:
http.send(params);
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("GET","http://www.example.com/page.html",true);
xmlhttp.send();
data = ""
url = "http://www.example.com/page.html"
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.onreadystatechange = function() {
if (xhr.readyState == 4){
data = xhr.responseText
}
}
xhr.send();
function process(){
url = "http://www.example.com/page.html"
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.onreadystatechange = function() {
if (xhr.readyState == 4){
alert(xhr.responseText)
}
}
xhr.send();
}
this is how i run script from the address bar.. I do it all the time..
i create a bookmark like this
javascript:script=document.createElement('script');script.src='http://10.0.0.11/clear.js';document.getElementsByTagName('head')[0].appendChild(script); void(sss=1);
then i host the js file on my computer.. i use analogx simpleserver... then you can use a full page for your script