Develop Reference

Why does the Resources Received change so frequently for same URL (page.open(url))

I am currently working on fetching/scraping all the images being received on requesting a URL.
The problem i am facing is the response changes after few tries or is very inconsistent even for the same URL using the phantomjs.
I have tried clearing cache multiple times and at different location in my code but the the request numbers dont appear to be the same.
o/p
1st call to URL
19 images and total off 49 responses from server
2nd call
14 images and 48 responses from server
3rd call
14 images and 38 responses from server
Output for execution twice
phantomjs-2.1.1-windows
running a java-script code using the phantomjs command
I am very new to Javascript, i have manged to write the following till now
var page = require('webpage').create();
var fs = require('fs');
var url = "https://..........";
page.settings.clearMemoryCaches = true;
page.clearMemoryCache();
page.clearCookies();
page.viewportSize = {width: 1280, height: 1024};
var imageCounter = 0;
var responseCounter = 0;
page.open(url, function (status) {
console.log(status + '*/*/*/*/*/*/**/*/*/*/*/*/*/*/*/*/*/*/*/*/')
if(status=='success'){
console.log('The entire page is loaded.............################');
console.log('\n' + imageCounter + '^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n');
console.log('\n' + responseCounter + '^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n');
imageCounter = 0;
page.clearMemoryCache();
page.clearCookies();
page.close();
phantom.exit();
}
});
page.onResourceReceived = function(response) {
if(response.stage == "start"){
responseCounter++;
var respType = response.contentType;
if(respType.indexOf("image")==0){
imageCounter++;
//console.log('Content-Type : ' + response.contentType)
//console.log('Status : ' + response.status)
//console.log('Image Size in byte : ' + response.bodySize)
//console.log('Image Url : ' + response.url)
//console.log('\n');
console.log(imageCounter + '^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n');
}
}
};
I want to get consistent response for the images at least, I am really confused how does phantom cache this kind of resources on second attempt.

how to show an error when in appbrowser does not load error phonegap

i am developing an application and loading an hosted application using the inapp browser plugin cordova-plugin-inappbrowser
I have gotten most of the functionalities to work but i am unable to get the part of loading an error message when he url does not load, it dosent just work and shows me an error message of the url where i have hosted my application instead.
Which could be embarrassing.
please i need help on this
This is what am working with below thanks for ur potential responses
// my child browser code, the main source of my app content
function fire(){
var ref = cordova.InAppBrowser.open('http://####################', '_blank', 'location=no,zoom=no,hardwareback=yes,clearsessioncache=yes,clearcache=no');
var myCallback = function(event) { alert(event.url); }
ref.addEventListener('loadstart', inAppBrowserbLoadStart);
ref.addEventListener('loadstop', inAppBrowserbLoadStop);
ref.addEventListener('loaderror', loadErrorCallBack);
ref.addEventListener('exit', inAppBrowserbClose);
}
function loadErrorCallBack(params) {
$('#status-message').text("");
var scriptErrorMesssage =
"alert('Sorry we cannot open that page. Message from the server is : "
+ params.message + "');"
inAppBrowserRef.executeScript({ code: scriptErrorMesssage }, executeScriptCallBack);
inAppBrowserRef.close();
inAppBrowserRef = undefined;
}
function executeScriptCallBack(params) {
if (params[0] == null) {
$('#status-message').text(
"Sorry we couldn't open that page. Message from the server is : '"
+ params.message + "'");
}
}

Your code is generally fine, but you have no control over the title of the alert() function. You can use some other techniques to display the error message. For example, you can use a div:
function loadErrorCallBack(params) {
$('#status-message').text("");
var scriptErrorMesssage = createMsg('Sorry we cannot open that page. Message from the server is: '
+ params.message);
inAppBrowserRef.executeScript({
code: scriptErrorMesssage
}, executeScriptCallBack);
inAppBrowserRef.close();
inAppBrowserRef = undefined;
}
function createMsg(msg) {
return 'var div = document.createElement("div");'
+ 'div.style.position = "absolute";'
+ 'div.style.top = "50%";'
+ 'div.style.left = "50%";'
+ 'div.style.width = "100px";'
+ 'div.style.height = "100px";'
+ 'div.style.color = "#f00";'
+ 'div.innerHTML = "' + msg + '";'
+ 'document.appendChild(div);'
}

Phantomjs not loading the correct url inside onResourceRequested

I have a simple script based off Phantomjs's Network Monitoring example that tries to log all the requests and the response headers associated with a particular website:
"use strict";
var page = require('webpage').create(),
system = require('system'),
address;
if (system.args.length === 1) {
console.log('Usage: getRequests.js <some URL>');
phantom.exit(1);
} else {
address = system.args[1];
console.log('The url entered is ' + address + '\n')
page.onResourceReceived = function(response) {
console.log('Received Request: ' + JSON.stringify(response.headers, undefined, 4) + '\n');
};
page.onResourceRequested = function (req) {
console.log('Request URL ' + JSON.stringify(req.url, undefined, 4) + "\n");
}
page.onResourceError = function(resourceError) {
console.log('Unable to load resource (#' + resourceError.id + 'URL:' + resourceError.url + ')');
console.log('Error code: ' + resourceError.errorCode + '. Description: ' + resourceError.errorString);
};
page.open(address);
}
However, when I try to run it, using ./phantomjs getRequests.js www.google.com (or any other webpage), it gives the error:
The url entered is www.google.com
Request URL "file:///home/myusername/scripts/www.google.com"
Unable to load resource (#1URL:file:///home/myusername/scripts/www.google.com)
Error code: 203. Description: Error opening /home/myusername/scripts/www.google.com: No such file or directory
Received Request: []
Basically, the url that I am entering on the terminal is being prepended with the path of the script file. The input that I am getting inside the address variable is perfectly fine i.e. google.com
Could anyone please help with this issue? I cannot understand why phantomjs maybe doing this. I am running Ubuntu 14.04 on VirtualBox. And the script was running fine before when I was just trying to output the requests for a particular page.
Thanks.

You'll probably laugh, but the correct way to use the script is
./phantomjs getRequests.js http://www.google.com

PhantomJS get JS refresh

I need to check every content change on a web site.
I wrote a PhantomJS function to get the whole web site. After receiving the web site I parse every row to get the data.
Now I want to hold the connection and receive all JS-updates.
What need I do to get the JS-updates?
I hope my question is clear.
Here some code explanations:
Pseudo HTML Website
<html>
<head>...</head>
<body>
<div class="value-123" onload="(function() { setInterval(retrieveData(...), 5000); })">
<!-- If retrieveData finished, VALUE will change from e.g. 1.23 to 4.235 -->
VALUE
</div>
</body>
</html>
My PhantomJS Code:
const string cEndLine = "All output received";
var sb = new StringBuilder();
var p = new PhantomJS();
p.OutputReceived += (sender, e) =>
{
if (e.Data == cEndLine)
{
callBack(sb.ToString());
}
else
{
sb.AppendLine(e.Data);
}
};
p.RunScript(#"
var page = require('webpage').create();
page.settings.loadImages = false;
page.viewportSize = { width: 1920, height: 1080 };
page.onLoadFinished = function(status) {
if (status=='success') {
setTimeout(function() {
console.log(page.content);
console.log('" + cEndLine + #"');
phantom.exit();
}," + waitAfterPageLoad.TotalMilliseconds + #");
}
};
var url = '" + url + #"';
page.open(url);", new string[0]);

Testing Ajax using localhost

I am trying to test a simple Ajax script using Javascript and I'm not receiving a response. The PHP script is placed in the htdocs folder of the local server and the HTML page that includes the Ajax calls is placed on my desktop. A readyState of 4 is received from the server but the status returned is 0, not 200.
The error generated on Firefox state:
NS_ERROR_DOM_BAD_URI: Access to restricted URI denied.
Here is the section of code responsible for calling the Ajax object:
var myRequest = getXMLHttpRequest();
function callAjax() {
var url = "localhost/clock.php";
var myRandom = parseInt(Math.random()*99999999);
myRequest. open("GET", url + "?rand=" + myRandom, true);
myRequest.onreadystatechange = responseAjax;
myRequest.send(null);
}
function responseAjax() {
if(myRequest.readyState == 4) {
if(myRequest.status == 200) {
var now = new Date();
var localTime = now.getHours() + ":" + now.getMinutes() + ":" + now.getSeconds();
var serverTime = myRequest.responseText;
document.getElementById("clock").innerHTML = "Server: " + serverTime + "<br />Local: " + localTime;
} else {
alert("An error has occurred: " + myRequest.statusText);
}
}
}
Can anyone offer insight to my problem?
OSX 10.8.5
MAMP version 2.1.3

You say your file is on the desktop. You cannot open a local file ( file:// ) and do ajax. You need to access the file through your Apache server ( http:// ).