I'm struck in a project, I need to develop a project as agenty chrome extension, where it uses point and click css selector. First I have used iframe to display a site but I faced cross origin and security issues. Now I'm using object tag to display a site and I want to make like point and click css selector on a button click.
Here is my sample code
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
<script type="text/javascript">
$(function () {
$('#dragit').click(function(){
// make $("#dvSource") to point and click css selector
});
});
</script>
</head>
<body>
<input type="submit" id="dragit" value="DragValues" />
<div id="dvSource">
<object type="text/html" data="http://validator.w3.org/" width="100%" height="600px" id="test">
</object>
</div>
</body>
</html>
I have placed in div (dvSource) and I have a button with id dragit, once I click that button I want to make point and click css selector for dvSource content
Related
Open JavaScript:- this code isn't editable as it is locked by the Host! So also I can't add any selector inside it!
But I can add another code outside of it. Like:- <ex ex="ex">Open JavaScript</ex>
So, I want to create a <script src="/javascript.js"></script> by fetching the URL from Open JavaScript.
They also didn't allow PHP there, otherwise I could do it myself. There is only one way to do it via JavaScript.
And I don't want to add the script inside <head> tags! It should be in the footer (<div class="body-footer"> Here </div>). There are not only one JavaScript link in the page, there are so many JavaScript links. So also I can't use $("a[href$='.js']");. Its became more tougher for me.
So how can I do this using JavaScript or jQuery?
Here is my implementation, where <script> tag is added before <a> with value of href.
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("button").click(function(){
var hrefValue = $("div#test a").attr("href");
$("div#test a").before("<script src='"+hrefValue+"'><\/script>");
console.log($("#test").html());
});
});
</script>
</style>
</head>
<body>
<div id="test">
Open JavaScript
</div>
</br></br>
<button>CLICK it, to add href value of anchor tag to newly created sibling element</button>
</body>
</html>
Now lets say I have this code set up.
<html>
<iframe id="content" src="http://www.newgrounds.com/" height="600px" width="100%" frameborder="0"></iframe>
<script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
<script>
//some code here
</script>
</html>
Let's say I want to remove certain section by class. For Example, I would want to remove the "header" class from that or just hide it. Something where you can't click on it or it doesn't show. I can use javascript or jQuery, doesn't really matter.
Any Ideas on how this can be done?
<!DOCTYPE html>
<html>
<head>
<title> Cookie Clicker! </title>
<script type="text/javascript">
var logAt=function(id,message){
document.getElementById(id).innerHTML=message;
};
</script>
</head>
<body>
<h1> Cookie Clicker </h1>
<p> Keep collecting cookies and start your very own sweet empire!</p>
<p>
<div id="cookiesPerSecond"> </div>
<button type="button" onClick="getCookie()"><img src="http://thinkprogress.org/politics/2011/04/26/161276/penn-parents-cookies-cuts/" alt="Cookie"
style="width:304px;height:228px"></button>
<h3 id="cookies">Cookies:0 </h3>
</p>
<script type="text/javascript">
var cookies=0;
var cookiesPerSecond=0;
function getCookie(){
cookies+=1;
logAt("cookies","Cookies:"+cookies);
};
</script>
</body>
</html>
My image inside of the button is not displaying, and defaults to the "alt". I am programming this on notepad, and am opening it in chrome. What should I do to make it work?
What you linked is not a link to a direct image. You need to link directly to an image. This is the link you need to change:
<img src="http://thinkprogress.org/politics/2011/04/26/161276/penn-parents-cookies-cuts/"
Change it to this:
<img src="http://d35brb9zkkbdsd.cloudfront.net/wp-content/uploads/2011/04/cookie.gif"
Also, like User Roko C. Bulijan said, you need to use CSS to make it a background-image or it won't show up.
I'm trying to write my first chrome extension to test my acquired knowledge from codecademy (HTML/CSS, JQUERY and Javascript). First of all I'm trying to append text to a paragraph tag via the onclick of a button.
heres my code:
<!doctype html>
<html>
<head>
<title>Facebook event graph</title>
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.6.1.min.js"></script>
<script src="popup.js"> </script>
</head>
<body>
<form id="inputUrl">
Enter a URL: <input type="text" name="url" id="url">
<button type="button" onclick="getFacebookData()"> Get Data </button>
</form>
<canvas id="graph" width="300" height="100">
</canvas>
<p id="text" width="300" height="100">1</p>
</body>
</html>
and my popup.js:
$(document).ready(function(){
//Variables
function getFacebookData() {
$('p').append('Test');
};
});
it's probably something very basic that I'm doing wrong, but a push in the right direction would be really appreciated :)
You are not allowed to use inline scripting like onclick="getFacebookData()"
You have to remove the handler from html:
<button type="button" id="my-button"> Get Data </button>
And you have to move the handler into popup.js:
$(document).ready(function(){
$('#my-button').click(getFacebookData);
});
You are also, by default, not allowed to load jQuery from an external CDN - and certainly not http one, again for Content Security Policy reasons. And you shouldn't! Put jQuery in your extension's folder and load it locally.
Matter of taste, but I would place getFacebookData() definition outside $(document).ready, so it's available in the global scope. Also, the semicolon after it is not needed.
Last, but not least: for future debugging, inspect the console of the corresponding page of your extension. For things like background/options page you should be able to access them from Developer Mode extensions list. For a popup, you should right-click the button of your extension and select "Inspect Popup".
<html>
<head>
<script type="text/javascript">
// jquery and javascript functions
</script>
</head>
<body>
<fancy-jquery-ajaxy-html-section>
</fancy-jquery-ajaxy-html-section>
<noscript>
sorry you came to the wrong place - this site is all jquery/ajaxy stuff.
</noscript>
</body>
</html>
I tried surrounding <fancy-jquery-ajaxy-html> with a <script type="text/javascript"></script> but then nothing from that section is displayed even for users with javascript enabled.
But what I want to do is hide that <fancy-jquery-ajax-html> section only if the user doesn't have javascript enabled.
It contains content that is useless to someone without javascript turned on, so it shouldn't be shown at all.
A user with javascript disabled should only see a message saying that the page can't be viewed without javascript.
Is there a way do that?
The easiest way is to hide the section with CSS (e.g. display:none), then show it through Javascript.
EDIT: just a little example
<div>Everyone sees this div</div>
<div id="mydiv" class="hidden">You see this div only with JS enabled</div>
<script type="text/javascript">
$("#mydiv").removeClass("hidden");
</script>
<noscript>
<div>You will see this div only with JS disabled</div>
</noscript>
And, of course, in your CSS:
.hidden
{
display: none;
}
You could hide your fancy section using css:
<div id="fancy_jquery_ajax" style="display: none;">
</div>
then you could use use JavaScript to display the element:
$("#fancy_jquery_ajax").css("display", "block");
I hope that's right, I actually don't use jQuery that much. :S
Another approach would be to generate that HTML using JavaScript, so it can't appear unless JavaScript is running.
What I did is to have my javascript hide the nojsdiv and show maindiv. This way, if you don't have javascript the message shows up.
<body onload="allowlogin()">
<div id="maindiv" style="visibility: hidden;">
...
</div>
<div id="nojsdiv">
The training system requires javascript to be enabled.
</div>
</body>
I prefer to add a class of .js to html tags as soon as jQuery has loaded. This allows my to write css rules that apply only when the user has javascript enabled/disabled. This keeps your show and hide code out of our JS and lets CSS do its job and style the page
Here's how I would approach your problem:
<html>
<head>
<style type="text/css">
.js #fancy_jquery_ajax {display: none;}
</style>
<script type="text/javascript" src="/scripts/jquery.js"></script>
<script type="text/javascript">
$('html').addClass('js');
$(document).ready(function() {
// Stuff to do as soon as the DOM is ready
});
</script>
</head>
<body>
<div id = "fancy_jquery_ajax"></div>
<noscript><!-- stuff to say if use had javascript disabled --></noscript>
</body>
</html>
It's important to note that we want to add the class of .js as soon as jQuery has loaded and not add it in our document.ready handler. Otherwise we'd be back to square one.