I am trying to share variables between two html pages. I am only using javascript and HTML5 to develop a windows 8 app. Based on an image which a user clicks on one page, I want a div on a second page to be populated with that image. Any ideas?
When I click on the image, I am currently calling the following function:
function imageClick(url) {
//var id = parsed.ClientID;
//window.location= url + "?" + id
window.location = url;
}
Then in my html file, I have this line:
<img onclick="imageClick('pages/page2/page2.html')"
data-win-bind="src:image" style="width: 133px; height: 125.5px;">
I was thinking of getting that id in the next page's url (if I were to uncomment the commented lines above) but it's a bit hackky and I don't actually know how to go about executing the retrieval of that on the next page..
Is there a more efficient and easy way of doing this in javascript? Like an equivalent of sessions in php or something?
Javascript does not have session variables because it runs on the client side. You can use URL parameters and cookies in order to achieve the same results.
You can get the URL parameter by using this function:
http://ziemecki.net/content/javascript-parsing-url-parameters
Add the link to the image to the query part of the url when they click. Something like you had in the comment, assuming you don't have a query part already:
function imageClick(url) {
//var id = parsed.ClientID;
window.location= url + "?src=" + url.src;
//window.location = url;
}
The other page can use window.location.search to extract it, strip off the src=. The code would look something like this:
var src = window.location.search;
if (src.indexOf("src=") == 0) {
src = src.substring(4);
}
newPageImageElement.src = src;
Where newPageImageElement is the <img> where you want to display the picture on the second page.
Related
I am sending an email via javascript. In mail.parameter.text property I need to send the hyperlink. In the code below I am hardcoding the url whick looks very lengthy and also I need to add the /dashboard at the end of the url. Any idea on how to shorten the url?
var parent = space.getParent();
var siteGroup = "GROUP_EMAIL_CONTRIBUTORS";
var mail = actions.create("mail");
mail.parameters.to_many = siteGroup;
mail.parameters.subject="New Site Created in Community"
mail.parameters.text=" A new site called " + document.properties.name +"is created.Click http://pc1:8080/share/page/site/"+document.properties.name+"/dashboard"+" to join the site";
//execute action against a document
mail.execute(document);
Sorry if this is a basic question I dont know javascript. This is my entire script and I am not using any html tags in between.
You can change it to something like this, for example:
mail.parameters.text="Click <a href='http://pc1:8080/share/page/site/" + document.properties.name + "/dashboard'>here</a>";
Your link will appear as "here" and nevertheless lead to the URL you specified. Is that what you mean by "shorten the url"?
Please try now.
var url = "Click http://pc1:8080/share/page/site/" + document.properties.name + "/dashboard" + " to join the site";
ail.parameters.text = url;
I'm building a scraper with phantom/casper.
At this point, I need to extract a URL that appears in the page only inside a js script.
Example of the page source code :
<script>
queueRequest('URL.aspx?var1='+VAR1+'&var2='+VAR2, getPageMenu');
</script>
I have no problem evaluating VAR1 and VAR2, as they are in the page context, but I need URL, which is hardcoded and has no reference to it. URL is of course different according to the page I'm on and I have no way of guessing it. Any ideas?
My ideas :
As the URL is called on page load to fill a div wih AJAX, I was thinking of maybe capturing the XHR request, but I don't know how.
I managed to get the script elem I need, using document.getElementsByTagName('script'). That may be one way to go, but how do I get only the line I need out of 200+ lines? (the one starting with queueRequest)
SO to make my question clear :
Which idea is better, 1 or 2?
if 1 : How do I capture the request URL with casper?
if 2 : How do I get the right line in my script?
If you want to search your script blocks, you can try something like this:
found = null;
scripts = document.getElementsByTagName('script');
for (i = 0; i < scripts.length; i++)
{
matches = /queueRequest\('(.+)\?/.exec(scripts[i].innerText)
if (matches)
{
found = matches[1];
break;
}
}
alert(found);
There might be tighter ways to implement the same thing but the regex is roughly what you're after. Note that this will only get you the URL part of the first appearance of queueRequest('something.something?...) in embedded script blocks.
I want to develop a platform where users can enter a URL and then my website will open the webpage in an iframe. Now the user can modify his website by simply right clicking and I will provide him options like "remove this element", "copy this element". I am almost through. Many of the websites are opening perfectly in iframe but for a few websites some errors have shown up. I could not identify the reason so asking for your help.
I have solved other issues like XSS problem.
Here is the procedure I have followed :-
Used JavaScript and sent the request to my Java server which makes connection to the URL specified by the user and fetches the HTML and then use Jsoup HTML parser to convert relative URLs into absolute URLs and then save the HTML to my disk in Java. And then I render the saved HTML into my iframe.
Is somewhere wrong ?
A few websites are working perfectly but a few are not.
For example:-
When I tried to open http://www.snapdeal.com it gave me the
Uncaught TypeError: Cannot read property 'paddingTop' of undefined
error. I don't understand why this is happening..
Update
I really wonder how this is implemented? # http://www.proxywebsites.in/browse.php?u=Oi8vd3d3LnNuYXBkZWFsLmNvbQ%3D%3D&b=13&f=norefer
2 issues, pick any you like:
your server side proxy code contains bugs
plenty of sites have either explicit frame-break code or at least expect to be top level frame.
You can try one more thing. In your proxy script you are saving your webpage on your disk and then loading into iframe. I think instead of loading the page you saved on disk in iframe try to open that page in browser. All those sites that restirct their page to be loaded into iframe will now get opened without any error.
Try this I think it an work
My Proxy Server side code :-
DateFormat df = new SimpleDateFormat("ddMMyyyyHHmmss");
String dirName = df.format(new Date());
String dirPath = "C:/apache-tomcat-7.0.23/webapps/offlineWeb/" + dirName;
String serverName = "http://localhost:8080/offlineWeb/" + dirName;
boolean directoryCreated = new File(dirPath).mkdir();
if (!directoryCreated)
log.error("Error in creating directory");
String html = Jsoup.connect(url.toString()).get().html();
doc = Jsoup.parse(html, url);
links = doc.select("link");
scripts = doc.select("script");
images = doc.select("img");
for (Element element : links) {
String linkHref = element.attr("abs:href");
if (linkHref != "") {
element.attr("href", linkHref);
}
}
for (Element element : scripts) {
String scriptSrc = element.attr("abs:src");
if (scriptSrc != "") {
element.attr("src", scriptSrc);
}
}
for (Element element : images) {
String imgSrc = element.attr("abs:src");
if (imgSrc != "") {
element.attr("src", imgSrc);
log.info(imgSrc);
}
}
And Now i am just returning the path where i saved my html file
That's it about my server code
I'm creating a bilingual website for a client. Two versions of the site in different languages will be created and stored in two folders:
/en/
/chi/
What I want to do is create a link to toggle between the two languages. On the conceptual level, I understand that Javascript can detect the current URL and split it into its different components, modify parts of it (in this case change between /en/ and /chi/), and then go to that new URL when the link is clicked.
But I have zero knowledge in javascript so I have no idea how to execute... I have come across this page:
http://css-tricks.com/snippets/javascript/get-url-and-url-parts-in-javascript/
but it doesn't explain how to modify and go to the new link.
You help will be greatly appreciated!!
To not break usability considerations like Shift + Click to open in a new window, you should create a plain old link (<a>) that points to the other language URL. There's nothing wrong with building the link via JavaScript, but you could also do it on the server using PHP or whatever templating language you're using.
Here's a script that does this with JavaScript if that's what you decide you'd like to do.
<!DOCTYPE html>
<body>
Content before the link.
<script>
(function () {
// this assumes you're on the en version and want to switch to chi
var holder = document.createElement("div");
var url = window.location.href.replace("/en/", "/chi/");
var link = document.createElement("a");
link.innerText = "Chewa"; // or whatever the link should be
link.href = url;
holder.appendChild(link);
document.write(holder.innerHTML);
})();
</script>
Content after the link.
</body>
If you simply want to take the full URL and replace /en/ with /chi/ or vise-versa, use the code below.
HTML
<span onclick="SwitchLang()">View [Some other Language]</span>
JavaScript
function SwitchLang() {
//Does URL contain "/en/"?
if(window.location.href.indexOf("/en/") != -1) {
//URL contain "/en/", replace with "/chi/"
window.location.href = window.location.href.replace("/en/", "/chi/");
}
//Does URL contain "/chi/"?
else if(window.location.href.indexOf("/chi/") != -1) {
//URL contain "/chi/", replace with "/en/"
window.location.href = window.location.href.replace("/chi/", "/en/");
}
}
Or, a bit more concise (un-commented version)
function SwitchLang() {
if(window.location.href.indexOf("/en/") != -1)
window.location.href = window.location.href.replace("/en/", "/chi/");
else if(window.location.href.indexOf("/chi/") != -1)
window.location.href = window.location.href.replace("/chi/", "/en/");
}
Note: In JS, when you modify window.location.href, the new URL is automatically loaded.
Here's a working fiddle for you to play with.
It looks like you need to change the window.location.pathname. For example:
// assuming the url `http://www.example.org/en/foo/bar/page.html`
var paths = window.location.pathname.split("/");
// change `en`
paths[1] = "chi";
// go to the new url
window.location.pathname = paths.join("/");
See:
https://developer.mozilla.org/en/DOM/window.location
I have a simple link inside my tml (apache tapestry specific) :
www.google.com
Now on the browser if I am trying to click the link, actually it's redirecting to
http://localhost:8080/..../..../www.google.com
Instead of it should open a new tab for that link.
So the logic which I am thinking is :
1) Fire a javascript on page load
2) Get the href value of anchor tag
3) Append http:// at the start, if it doesn't contains it.
So to do this, actually I want to use prototype (javascript framework), and I am bit new to this...
How can I write the function using the Prototype.js library?
You don't say where the value for your href is coming from. As you say you need to prepend an "http". Assuming the link is dynamically rendered, why don't you just do this server-side, probably much easier. In tml:
... href="${url}" ....
and in .java:
public String getUrl() {
return "http://" + url;
}
This is a much better approach than doing it client-side as what happens if the user has javascript turned off?
On the other hand, if it's a static link in your .tml, just write "http://www.google.com"!
Edit: In light of your comment below:
public String getUrl() {
if (!url.startsWith("http://") {
url = "http://" + url;
}
return url;
}
The above is just an example of what do do. You can either add another method to activityDetails which does this (e.g getExternalLinkWithProtocol()), or provide a wrapper method similar to the one above.
No reason to do this on the client side. Simply change your template to:
www.google.com
and if it's based on a property:
${hostname}
... adjust to fit your properties, etc.
window.onload = function(){
var links = document.links;
for(var i=links.length-1; i>=0; i--){
var link = links[i];
var href = link.getAttribute("href");
if(href.indexOf("http://") < 0){
link.href = "http://" + href;
}
}
};