I'm trying to get the source code form a URL web page using JSONP.
This is the code:
<script type="text/javascript">
var your_url = '';
$(document).ready(function(){
jQuery.ajax = (function(_ajax){
var protocol = location.protocol,
hostname = location.hostname,
exRegex = RegExp(protocol + '//' + hostname),
YQL = 'http' + (/^https/.test(protocol)?'s':'') + '://query.yahooapis.com/v1/public/yql?callback=?',
query = 'select * from html where url="{URL}" and xpath="*"';
function isExternal(url) {
return !exRegex.test(url) && /:\/\//.test(url);
}
return function(o) {
var url = o.url;
if ( /get/i.test(o.type) && !/json/i.test(o.dataType) && isExternal(url) ) {
// Manipulate options so that JSONP-x request is made to YQL
o.url = YQL;
o.dataType = 'json';
o.data = {
q: query.replace(
'{URL}',
url + (o.data ?
(/\?/.test(url) ? '&' : '?') + jQuery.param(o.data)
: '')
),
format: 'xml'
};
// Since it's a JSONP request
// complete === success
if (!o.success && o.complete) {
o.success = o.complete;
delete o.complete;
}
o.success = (function(_success){
return function(data) {
if (_success) {
// Fake XHR callback.
_success.call(this, {
responseText: data.results[0]
// YQL screws with <script>s
// Get rid of them
.replace(/<script[^>]+?\/>|<script(.|\s)*?\/script>/gi, '')
}, 'success');
}
};
})(o.success);
}
return _ajax.apply(this, arguments);
};
})(jQuery.ajax);
$.ajax({
url: your_url,
type: 'GET',
success: function(res) {
var text = res.responseText;
//document.getElementById("contenuto").innerHTML = text;
alert(text);
}
});
});
</script>
I printed with an alert all the source code, from the URL.
alert(text);
First, how to know if the printed code is all the web code of the page?
If I try to do in this way
document.getElementById("contenuto").innerHTML = text;
this is the result:
\ \ <'+'/ins>\ \ \ '); } ]]>
I tried to use HTML DOM to print just one element, doing in this way
document.getElementById("contenuto").innerHTML = text;
var elem = text.getElementById("strip_adv").innerHTML;
document.getElementById("contenuto_1").innerHTML = elem;
}
But this is the error on the JS console:
text.getElementById is not a function
Recap:
I would to get the source code of a web page from URL, using JSONP.
I would use HTML DOM from the returned text, to keep only the element/class I need. I'm a newbie on JS, I'm trying to learn more & more about JS.
getElementById() is present only in the document object. What you are trying to do is trying to access getElementId from a string object.
Instead what I would suggest is insert the returned html string inside iframe and you can access the elements within iframe otherwise you can use some kind of html parser in your application.
lets say your html looks like this after you insert your html string inside iframe
<body>
<iframe id="one">
<html>
<body> <h1 id="strip_adv">Heading</h1> </body>
</html
</iframe>
</body>
function iframeObj( frameEle ) {
return frameEle.contentWindow
? frameEle.contentWindow.document
: frameEle.contentDocument
}
var element = iframeObj( document.getElementById('strip_adv') );
This is the js function:
var onContentChange = function () {
var content =
$("#blogpost-content").data("kendoEditor").value($("#value").val());
console.log(content);
$http.post("/Map/SaveBlogPostContent?destinationId=" +
$("#currentDestinationId").val() +
"&blogPostId=" + $("#currentBlogPost").val() + "&content=" + content)
.then(onSaveBlogPostContent, onError);
}
This method is triggered on change of a textarea.
When it hits the console.log it writes out the correct text that is currently in the textarea but when it posts the data to my controller method it only receives a bit of the content.
Why is this?
It's quite possible you have 'illegal characters' in your textarea, try to escape the content variable, change it like so:
var onContentChange = function () {
var content = $("#blogpost-content").data("kendoEditor").value($("#value").val());
console.log(content);
$http.post("/Map/SaveBlogPostContent?destinationId=" + encodeURIComponent($("#currentDestinationId").val()) + "&blogPostId=" + encodeURIComponent($("#currentBlogPost").val()) + "&content=" + encodeURIComponent(content))
.then(onSaveBlogPostContent, onError);
}
The encodeURIComponent() is the important part there.
Since this is a get and not a post, there are limits to the length of data you can send in the get request, it will depend by browser. you also want to make sure you dont have any characters that need to be escaped. eg. charters used in the url such as ? or & or /. you can escape these by using.
var contentToPass = encodeURIComponent(content);
see here encodeURIComponent
Try this:
var onContentChange = function () {
var content =
$("#blogpost-content").data("kendoEditor").value($("#value").val());
console.log(content);
$http.post("/Map/SaveBlogPostContent", {
destinationId: $("#currentDestinationId").val(),
blogPostId: $("#currentBlogPost").val(),
content: content
}).then(onSaveBlogPostContent, onError);
}
To display my latest blog-posts on a different page I want to parse the rss-feed from the blog and then generate elements with it.
I first tried to parse a fixed .xml file for which I wrote the following code:
var maxBlogposts = 5;
var blogPosts = 0;
$.get("rss.xml", function(data) {
$(data).find("item").each(function() {
if(blogPosts === maxBlogposts) return;
var el = $(this);
//Only display 3 posts on small devices.
var extra = (blogPosts >= 3) ? "not-small 12u(small)" : "12u(small)";
var div = $('<div class="6u ' + extra + '" class="blog-entry"></div>');
var h = $('<h4>' + el.find("title").text() + '</h4>');
var description = el.find("description").text().replace('[…]', '[…]');
var p = $('<p>' + description + '</p>');
div.append(h);
div.append(p);
$('#blog').append(div);
blogPosts++;
});
});
This worked perfectly fine. Now I want to parse the actual rss-feed. For this I wrote a PHP script which simply gets the feed and echos it.
<?php
$rss = file_get_contents('http://xn--der-grne-baum-1ob.net/feed/');
die($rss);
?>
And again I get the correct XML file on the frontend.
The problem I have is that now my code is no longer working. Getting the description was failing as well as the links. I fixed the description by accessing
el.find(description")[0].innerHTML
However I can't seem to get the links to work. The data returned from the PHP file contains a node with the link in it. The "el"-element also contains children named "link" but those no longer contain the actual link.
I feel like the links may get "escaped" during parsing? At least that is the only reason i could think of that would result in what I am observing.
The XML I am parsing comes from http://xn--der-grne-baum-1ob.net/feed/
Try
var maxBlogposts = 5
, blogPosts = 0;
$.get("https://query.yahooapis.com/v1/public/yql?q=select"
+ " * from feed where url='http://xn--der-grne-baum-1ob.net/feed/'")
.then(function(data) {
$(data.documentElement).find("results item")
.each(function() {
if(blogPosts === maxBlogposts) return;
var el = $(this);
//Only display 3 posts on small devices.
var extra = (blogPosts >= 3) ? "not-small 12u(small)" : "12u(small)";
var div = $('<div class="6u ' + extra + '" class="blog-entry"></div>');
var h = $('<h4>' + el.find("title").text() + '</h4>');
var description = el.find("description").text().replace('[…]', '[…]');
var p = $('<p>' + description + '</p>');
div.append(h);
div.append(p);
$('#blog').append(div);
blogPosts++;
});
}, function(jqxhr, textStatus, errorThrown) {
console.log(textStatus, errorThrown)
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="blog"></div>
See YQL Console
I have a MVC3 action method with 3 parameters like this:
var url = "/Question/Insert?" + "_strTitle='" + title + "'&_strContent='" + content + "'&_listTags='" + listTags.toString() + "'";
and I want to call this by normal javascript function not AJAX (because it's not necessary to use AJAX function)
I tried to use this function but it didn't work:
window.location.assign(url);
It didn't jump to Insert action of QuestionController.
Is there someone would like to help me? Thanks a lot
This is more detail
I want to insert new Question to database, but I must get data from CKeditor, so I have to use this function below to get and validate data
// insert new question
$("#btnDangCauHoi").click(function () {
//validate input data
//chủ đề câu hỏi
var title = $("#txtTitle").val();
if (title == "") {
alert("bạn chưa nhập chủ đề câu hỏi");
return;
}
//nội dung câu hỏi
var content = GetContents();
content = "xyz";
if (content == "") {
alert("bạn chưa nhập nội dung câu hỏi");
return;
}
//danh sách Tag
var listTags = new Array();
var Tags = $("#list_tag").children();
if (Tags.length == 0) {
alert("bạn chưa chọn tag cho câu hỏi");
return;
}
for (var i = 0; i < Tags.length; i++) {
var id = Tags[i].id;
listTags[i] = id;
//var e = listTags[i];
}
var data = {
"_strTitle": title,
"_strContent": content,
"_listTags": listTags.toString()
};
// $.post(url, data, function (result) {
// alert(result);
// });
var url = "/Question/Insert?" + "_strTitle='" + title + "'&_strContent='" + content + "'&_listTags='" + listTags.toString() + "'";
window.location.assign(url); // I try to use this, and window.location also but they're not working
});
This URL call MVC action "Insert" below by POST method
[HttpPost]
[ValidateInput(false)]
public ActionResult Insert(string _strTitle, string _strContent, string _listTags)
{
try
{
//some code here
}
catch(Exception ex)
{
//if some error come up
ViewBag.Message = ex.Message;
return View("Error");
}
// if insert new question success
return RedirectToAction("Index","Question");
}
If insert action success, it will redirect to index page where listing all question include new question is already inserted. If not, it will show error page. So, that's reason I don't use AJAX
Is there some one help me? Thanks :)
Try:
window.location = yourUrl;
Also, try and use Fiddler or some other similar tool to see whether the redirection takes place.
EDIT:
You action is expecting an HTTP POST method, but using window.location will cause GET method. That is the reason why your action is never called.
[HttpPost]
[ValidateInput(false)]
public ActionResult Insert(string _strTitle, string _strContent, string _listTags)
{
// Your code
}
Either change to HttpGet (which you should not) or use jQuery or other library that support Ajax in order to perform POST. You should not use GET method to update data. It will cause so many security problems for your that you would not know where to start with when tackling the problem.
Considering that you are already using jQuery, you might as well go all the way and use Ajax. Use $.post() method to perform HTTP POST operation.
Inside a callback function of the $.post() you can return false at the end in order to prevent redirection to Error or Index views.
$.post("your_url", function() {
// Do something
return false; // prevents redirection
});
That's about it.
You could try changing
var url = "/Question/Insert?" + "_strTitle='" + title + "'&_strContent='" + content + "'&_listTags='" + listTags.toString() + "'";
to
var url = "/Question/Insert?_strTitle=" + title + "&_strContent=" + content + "&_listTags=" + listTags.toString();
I've removed the single quotes as they're not required.
Without seeing your php code though it's not easy to work out where the problem is.
When you say "It didn't jump to Insert action of QuestionController." do you mean that the browser didn't load that page or that when the url was loaded it didn't route to the expected controller/action?
You could use an iframe if you want to avoid using AJAX, but I would recommend using AJAX
<iframe src="" id="loader"></iframe>
<script>
document.getElementById("loader").src = url;
</script>
I'm pretty new to javascript, and therein probably lies my problem. I'm trying to track AdWords conversions that occur within a widget on our site. The user fills in a form and the result from the widget is published in the same div without a page refresh. The issue I'm having is when I try to appendChild (or append in jQuery) both script elements in Google's code (shown below) the page gets 302 redirected to a blank Google page (or at least that's what it looks like through FireBug).
I'm able to provide a callback method for the results of the form, and that's where I'm trying to insert the AdWords tracking code. For reference, this is the code provided by Google:
<script type="text/javascript">
/* <![CDATA[ */
var google_conversion_id = 993834405;
var google_conversion_language = "en";
var google_conversion_format = "3";
var google_conversion_color = "ffffff";
var google_conversion_label = "bSpUCOP9iAIQpevy2QM";
/* ]]> */
</script>
<script type="text/javascript" src="http://www.googleadservices.com/pagead/conversion.js">
</script>
<noscript>
<div style="display:inline;">
<img height="1" width="1" style="border-style:none;" alt="" src="http://www.googleadservices.com/pagead/conversion/993834405/?label=bSpUCOP9iAIQpevy2QM&guid=ON&script=0"/>
</div>
</noscript>
Pretty standard stuff. So, what I'm trying to do is insert this into the results page using the callback method (which is provided). Frankly, I'm redirected no matter when I try to insert this code using js or jQuery (either on original page load or in the callback) so maybe the callback bit is irrelevant, but it's why I'm not just pasting it into the page's code.
I've tried a number of different ways to do this, but here's what I currently have (excuse the sloppiness. Just trying to hack my way through this at the moment!):
function matchResultsCallback(data){
var scriptTag = document.createElement('script');
scriptTag.type = "text/javascript";
scriptTag.text = scriptTag.text + "/* <![CDATA[ */\n";
scriptTag.text = scriptTag.text + "var google_conversion_id \= 993834405\;\n";
scriptTag.text = scriptTag.text + "var google_conversion_language \= \"en\"\;\n";
scriptTag.text = scriptTag.text + "var google_conversion_format \= \"3\"\;\n";
scriptTag.text = scriptTag.text + "var google_conversion_color \= \"ffffff\"\;\n";
scriptTag.text = scriptTag.text + "var google_conversion_label \= \"bSpUCOP9iAIQpevy2QM\"\;\n";
scriptTag.text = scriptTag.text + "/* ]]> */\n";
$('body').append(scriptTag);
$('body').append("<script type\=\"text\/javascript\" src\=\"http://www.googleadservices.com/pagead/conversion.js\" />");
//I have also tried this bit above using the same method as 'scriptTag' with no luck, this is just the most recent iteration.
var scriptTag2 = document.createElement('noscript');
var imgTag = document.createElement('img');
imgTag.height = 1;
imgTag.width = 1;
imgTag.border = 0;
imgTag.src = "http://www.googleadservices.com/pagead/conversion/993834405/?label=bSpUCOP9iAIQpevy2QM&guid=ON&script=0";
$('body').append(scriptTag2);
$('noscript').append(imgTag);
}
The really odd thing is that when I only insert one of the script tags (it doesn't matter which one), it doesn't redirect. It only redirects when I try to insert both of them.
I've also tried putting the first script tag into the original page code (as it's not making any calls anywhere, it's just setting variables) and just inserting the conversions.js file and it still does the redirect.
If it's relevant I'm using Firefox 3.6.13, and have tried the included code with both jQuery 1.3 and 1.5 (after realizing we were using v1.3).
I know I'm missing something! Any suggestions?
Nowadays it is convenient to use the Asynchronous Tag at http://www.googleadservices.com/pagead/conversion_async.js that exposes the window.google_trackConversion function.
This function can be used at any time. For example after submitting a form, like in your case.
See https://developers.google.com/adwords-remarketing-tag/asynchronous/
Update 2018
Situation changed and it seems that you have more options now with the gtag.js: https://developers.google.com/adwords-remarketing-tag/
If you're using jQuery in your pages, why don't you use the getScript method of the same to poll the conversion tracking script after setting the required variables?
This is what I usually do, once I've received a success response from my AJAX calls.
var google_conversion_id = <Your ID Here>;
var google_conversion_language = "en";
var google_conversion_format = "3";
var google_conversion_color = "ffffff";
var google_conversion_label = "<Your Label here>";
var google_conversion_value = 0;
if (100) {
google_conversion_value = <Your value here if any>;
}
$jQ.getScript( "http://www.googleadservices.com/pagead/conversion.js" );
This works just fine for me. If you want a more detailed example:
$.ajax({
async: true,
type: "POST",
dataType: "json",
url: <Your URL>,
data: _data,
success: function( json ) {
// Do something
// ...
// Track conversion
var google_conversion_id = <Your ID Here>;
var google_conversion_language = "en";
var google_conversion_format = "3";
var google_conversion_color = "ffffff";
var google_conversion_label = "<Your Label here>";
var google_conversion_value = 0;
if (100) {
google_conversion_value = <Your value here if any>;
}
$.getScript( "http://www.googleadservices.com/pagead/conversion.js" );
} // success
});
If you use other libraries such as Mootools or Prototype, I'm sure they have similar in-built methods. This AFAIK is one of the cleanest approaches.
this simple code worked for me (the $.getScript version didn't).
var image = new Image(1,1);
image.src = 'http://www.googleadservices.com/pagead/conversion/' + id + '/?label=' + label + ' &guid=ON&script=0';
// This takes care of it for jQuery. Code can be easily adapted for other javascript libraries:
function googleTrackingPixel() {
// set google variables as globals
window.google_conversion_id = 1117861175
window.google_conversion_language = "en"
window.google_conversion_format = "3"
window.google_conversion_color = "ffffff"
window.google_conversion_label = "Ll49CJnRpgUQ9-at5QM"
window.google_conversion_value = 0
var oldDocWrite = document.write // save old doc write
document.write = function(node){ // change doc write to be friendlier, temporary
$("body").append(node)
}
$.getScript("http://www.googleadservices.com/pagead/conversion.js", function() {
setTimeout(function() { // let the above script run, then replace doc.write
document.write = oldDocWrite
}, 100)
})
}
// and you would call it in your script on the event like so:
$("button").click( function() {
googleTrackingPixel()
})
In your Adwords account - if you change the conversion tracking event to "Click" instead of "Page Load" it will provide you with code that creates a function. It creates a snippet like this:
<!-- Google Code for Developer Contact Form Conversion Page
In your html page, add the snippet and call
goog_report_conversion when someone clicks on the
chosen link or button. -->
<script type="text/javascript">
/* <![CDATA[ */
goog_snippet_vars = function() {
var w = window;
w.google_conversion_id = <Your ID Here>;
w.google_conversion_label = "<Your value here if any>";
w.google_remarketing_only = false;
}
// DO NOT CHANGE THE CODE BELOW.
goog_report_conversion = function(url) {
goog_snippet_vars();
window.google_conversion_format = "3";
window.google_is_call = true;
var opt = new Object();
opt.onload_callback = function() {
if (typeof(url) != 'undefined') {
window.location = url;
}
}
var conv_handler = window['google_trackConversion'];
if (typeof(conv_handler) == 'function') {
conv_handler(opt);
}
}
/* ]]> */
</script>
<script type="text/javascript"
src="//www.googleadservices.com/pagead/conversion_async.js">
</script>
Then in your code you just call:
goog_report_conversion();
Or for a link or image click:
click here
After trying everything the link Funka provided (http://articles.adamwrobel.com/2010/12/23/trigger-adwords-conversion-on-javascript-event) was what worked for me. Like he said it's scary to overwrite document.write, but
It seems like this is what you have to do unless you can load the script before the page load.
Since the script uses document.write so it needs to be re-written
document.write = function(node){ // exactly what document.write should of been doing..
$("body").append(node);
}
window.google_tag_params = {
prodid: pageId,
pagetype: pageTypes[pageType] || "",
value: "234324342"
};
window.google_conversion_id = 2324849237;
window.google_conversion_label = "u38234j32423j432kj4";
window.google_custom_params = window.google_tag_params;
window.google_remarketing_only = true;
$.getScript("http://www.googleadservices.com/pagead/conversion.js")
.done(function() {
// script is loaded.
});
See https://gist.github.com/c7a316972128250d278c
As you have seen, the google conversion tag only calls on a redraw. I had to make sure it was called when a part of a page was redrawn. (Due to some bad website design that I could not fix at the moment.) So I wrote a function to call from an onClick event.
Essentially, all you have to do is to call doConversion();
Here is what we ended up with:
// gothelp from from http://www.ewanheming.com/2012/01/web-analytics/website-tracking/adwords-page-event-conversion-tracking
var Goal = function(id, label, value, url) {
this.id = id;
this.label = label;
this.value = value;
this.url = url;
};
function trackAdWordsConversion(goal, callback) {
// Create an image
var img = document.createElement("img");
// An optional callback function to run follow up processed after the conversion has been tracked
if(callback && typeof callback === "function") {
img.onload = callback;
}
// Construct the tracking beacon using the goal parameters
var trackingUrl = "http://www.googleadservices.com/pagead/conversion/"+goal.id;
trackingUrl += "/?random="+new Date().getMilliseconds();
trackingUrl += "&value="+goal.value;
trackingUrl += "&label="+goal.label;
trackingUrl += "&guid=ON&script=0&url="+encodeURI(goal.url);
img.src = trackingUrl;
// Add the image to the page
document.body.appendChild(img);
// Don't display the image
img.style = "display: none;";
}
function linkClick(link, goal) {
try {
// A function to redirect the user after the conversion event has been sent
var linkClickCallback = function() {
window.location = link.href;
};
// Track the conversion
trackAdWordsConversion(goal, linkClickCallback);
// Don't keep the user waiting too long in case there are problems
setTimeout(linkClickCallback, 1000);
// Stop the default link click
return false;
} catch(err) {
// Ensure the user is still redirected if there's an unexpected error in the code
return true;
}
}
function doConversion() {
var g = new Goal(YOUR CODE,YOUR_COOKIE,0.0,location.href);
return linkClick(this,g);
}
I tried all the ways to manually include conversion.js, it all loaded the script, but didn't further execute what we needed inside the script, there's a simple solution.
Just put your conversion code in a separate HTML, and load it in an iframe.
I found code to do that at http://www.benjaminkim.com/ that seemed to work well.
function ppcconversion() {
var iframe = document.createElement('iframe');
iframe.style.width = '0px';
iframe.style.height = '0px';
document.body.appendChild(iframe);
iframe.src = '/track.html'; // put URL to tracking code here.
};
then just call ppcconversion() wherever in the JS you like to record it.
All I do is return the code (or in our case, an image) along with the "success" message in the callback.
When a contact form is submitted, or a registration form filled out and submitted, we post to a php script using jQuery, then output a "thank-you" message to a div:
"$first_name, Thanks for requesting more information. A representative will contact you shortly."
... followed by the 1x1 gif Google provides.
Here's the jQuery:
$.post('script.php',{'first_name':first_name,'last_name':last_name,'email':email,'phone1':phone1,'password':password,},function(data){
var result=data.split("|");
if(result[0] ==='success'){
$('#return').html(result[1] + $result[2]);
And the php...
echo 'success|'.$first_name.', Thanks for requesting more information.
A representative will contact you shortly.|<img height="1" width="1" alt="" src="http://www.googleadservices.com/pagead/conversion/xxxxxxxx/imp.gif?value=0&label=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx&script=0"/>';
You might need to throw in a "document.location.reload();" if it isn't being picked up by google
For anyone still looking for a good solution to this, Google supports AJAX Conversions natively now through their Google Analytics API.
You can do it by making a event API call in Google Analytics. What you do is setup an Analytics event, tie it to a goal, then import that goal into AdWords as a conversion. It's a bit of a lengthy process but it's a clean solution.
Check out This Page for a tutorial
This works for me:
window.google_trackConversion({
google_conversion_id: 000000000,
conversion_label : "xxxxxxxxxxxx",
google_remarketing_only: false,
onload_callback : function(){
//do something :)
}
});