Develop Reference

How to have javascript work on php loaded content?

I have a php file that loads a different form based on a identifier passed in with a GET request.
Everything works.... except my Javascript/jQuery. Is there a way to re-load my javascript to get it to work on the form?
Or will I need to something else entirely ? like a template system?
Currently, when the page is being loaded by the browser it is commenting out my Javascript script tag that loads my functions.js file. I'm assuming this is because it is because the code relies on a form and as the form hadn't been loaded yet, some kind of error forces the script to be commented out.

You can rectify your problem in two ways:-
1. Put you complete javascript/jQuery code at the bottom of the page (very last) inside (<script></script>)
Or
2. Wrap your complete code inside $(document).ready(function(){ ...//your code ....});
Note:-
a. If you are trying to include an external javascript/jQuery file which have the custom code,then also include it at the bottom of the current page.
b. Take care that proper jquery library (if needed) will added before your code

Add script to script that contains document.write won't execute

We're using a webprogram that uses ajax and jquery and the like (Netsuite). I want to change something on a page and have tried to use document.ready and window.load to get an external script loaded on the page. I've tried to load the external script in the head and body.. but the contents aren't written. The external file looks for a specific div id and then prepends some code to that. It never works, because the page itself loads dynamically and the div I'm looking for loads when the rest of the page is done. So window.load, etc. never work...
At last I'm in the program itself that loads parts and pieces and am trying to simply write the external script file in there. Now this time the external file has a simple document.write in it, so it's straightforward. In other words, the script is in the middle of html code in the body of the page. (I know this is a terrible way of doing it, but I've got to try something to get this to work....)
According to firebug, it writes the external file where it should be (check!) and firebug shows me the contents of that file (check!), but ... it never 'writes' it onto the page...
The file just contains this:
document.write('<div id="shpblk" style="border:2px solid #ffa500;border-radius:7px;color:#000066;margin:5px;padding:5px;text-align:left;"><img border="0" width="12" height="12" src="/images/icons/store/icon_exclamation2c.gif">Hazardous conditions blahblah... Potential delays and disruptions can be anticipated.</div>');
What am I missing?
Edit: some more clarification is necessary...:
Situation: I have to be able to put a piece of html on the page every now and then that creates a message.
Environment: What I have is a page that loads a header and footer first (which are set up in separate files) and then it takes a second or so to load the rest of the page. From what I understand, this "rest of the page" is written in a certain code, similar to javascript/jquery.
What I CAN do is: edit the files for the header and footer and put javascript in there to make modifications to the rest of the page. I can access some of the files that contain parts and pieces of the "rest of the page", but this is a huge pile of spaghetti.
What I've tried:
Since I want to be flexible with the html that I need to put into the page, I preferably would like to create a piece of javascript or html or whatever on another site and have the "environment" pick up that code. I can do this with javascript or iframe. But since it's a secure area (https), I thought it would be best to use a javascript file instead of an iframe. So....
I created the javascript file and tried it out in a normal environment where I knew for sure it would work.. and it works like a charm. But when I tried this in the before mentioned "environment", I am running against a wall...
The javascript file has document.ready jquery statement in it and it would prepend the html div to an existing div on the page.
This way it would load the page and write the page.. easy as pie.
However.. since the header and footer load first (which includes the external script file), and then the rest of the page, SOMEHOW the div where the script checks for DOES NOT EXIST YET. So I tried window.load instead of document.ready. Same result.
Now, it WOULD appear ONLY when I refresh the page. So there may be a way to have it refresh the page, but I only want this as the absolute last attempt.
So then I tried to see if I could go around this by changing the script so that, instead of using a document.ready it would just do a simple javascript document.write statement.
Then I call the script in the middle of the body of the page (I put it in one of the files that load in the middle of the page). I know this is not something I would do normally, but wanted to try it out anyway. So.... I would have something like this:
<div id="block1">
<div id="block2">stuff here<div>
<script type="text/javascript" src="https://someotherdomain.com/include.js" ></script>
<div id="block3">stuff here<div>
<div id="block4">stuff here<div>
</div>
Now when I run this, I do not get any errors, but nothing is being done with the contents of that js file. In firebug it shows me the contents of that file though.. so I assume it's being read.
But I have no idea why it doesn't run.
Again.. back to 'normal' practices: I've tried window.load, because this would run the statement after the page loads, HOWEVER.. like I said before, I have the feeling it builds the contents of the (middle of the) page through this somehow and my script runs before this; it cannot find the div (block3) where it would prepend to. Whenever I stop running the page at my script, the div it's depending on doesn't exist yet...
I hope this made sense...

Solution
For the external script file to work as expected, OP will need to load it using an asynchronous script tag like this:
<script type="text/javascript" src="include.js" ></script>
Yet, the file contains a document.write() statement, which is generally something to avoid. A better alternative would be remove document.write() from the file and save it as a plain HTML file. This could then be safely loaded using using jQuery:
$("#include1").load("include.html");
( Requires adding a target DIV to the page where the content should load. )
DETAILS
The question doesn't tell us how the external file is included on the page. And without that information it's difficult to understand the problem or provide a solution ... which is probably why this question has gone unanswered.
Yet, let's assume the the script is being injected into the page on the client side using JavaScript or jQuery. And if that's true then it will fail if not done the correct way.
Let's look at some ways we might add the script to the page:
These script tags will all fail because the file contains a document.write statement and the script is loaded asynchronously.
<script type="text/javascript" src="include.js" async ></script>
<script type="text/javascript" src="include.js" defer ></script>
<script type="text/javascript" src="include.js" async defer ></script>
The browser does load the file, but reports:
Failed to execute 'write' on 'Document': It isn't possible to write
into a document from an asynchronously-loaded external script unless
it is explicitly opened.
This jQuery sort of works. It loads the script, but the document.write implicitly calls document.open, which erases the original content of the page. That's probably not what OP wants.
$.getScript('include.js');
This synchronous method works so long as the document.write is executed on load, i.e., is not inside function called later. So this is a possible solution for OP.
<script type="text/javascript" src="include.js" ></script>

Can't load url on same tab

I know a way to solve this but it's the wrong way and involves creating a new file and simply cheat.
Now the problem:
i have a folder with the index.html file; this file has a menu which has a <a href="reg_interlocutor.html">
in reg_interlocutor.html i use div's and in one of them i call the registration form:
this inserts the content of file form_registo_interlocutor.html into the div and sends the data inserted by the user to the file reg_interlocutor.php inside a folder called php;
in this file reg_interlocutor.php, when there is a problem with the data i use
echo "<script>alert('blablabla.'); window.location = '../index.html';</script>";
But if everything goes ok, i want to reload index.html.
The problem is that the browser reloads index.html inside the same div i was using since Step 2.
Actually, the tab url stays the same: localhost/proj/reg_interlocutor.html every step since step_2.
I already used:
header('window-target: main');
header('location:../index.html');
<script>top.window.location='../index.html';</script>
window.open("http://localhost/proj/index.html","_self");
Can anyone help me? I understand that my code is stuck on the div and that is why the index file is open inside that div.

You would probably be better off by using PHP (instead of HTML) to include an external html file instead of doing this directly in HTML. PHP can inject the external HTML file into the final output, which results in a much cleaner result than having the user's web browser fetch the other html file (creating a second request). This should also resolve the html loading into the <object> tag instead of the full page.

Linked javascript file not using the URL of its parent page

I have a function that loads more database results. This function is called on different pages so i have given its own file and then linked to it in each of those pages e.g.:
<script type="text/javascript" src="js/loadmorebuilds.js">
</script>
In that file, i run an ajax call to a file and use a segment of the pages URL.
If i create that segment in the file itself it doesnt work as im guessing it uses the URL of the page. My work around currently is like so:
<script>
var exampleSegment = window.location;
</script>
<script type="text/javascript" src="js/loadmorebuilds.js">
</script>
However i am writing a longer method of getting that segment from the URL and want to include it in with the js file itself so i dont have to go editing it on every page that i need it.
Is there a way to do this? Thanks, hope it makes sense...

So what you're asking is how you can get the url of the external script to go from there instead?
If the script is loaded with the page, it will be the last on the page as of the script running. So you can use a code like:
var scripts = document.getElementsByTagName('script');
var lastScript = scripts[scripts.length - 1];
alert(lastScript.src);
Source is another post on this forum Can code in a Javascript file know its own domain/URL

jQuery in CSS style sheet

I’m working on making my web site fade in and out every time I click a link to another page. I need to use jQuery to do this. Do I need to put the jQuery code on every page or can I write jQuery into the CSS Stylesheet? If so, how do I format the CSS Stylesheet to accept jQuery?
I’m experimenting with the code from this forum post: Fade Out between pages – CSS-Tricks
Edit to question based on comments
So, I now know that I can’t put JavaScript in CSS file. What’s the best way to put JavaScript code that applies to all pages in a site? I want to write this transition code and then not have to write/edit it into every page.

Save the JavaScript in a file with the extension .js, for example main.js. Then give it a public URL, in a similar way that your CSS files are accessible from a URL. An example URL: http://example.com/js/main.js. You might do that by putting it in a js folder in your public_html folder on your server – it depends on your server.
Then, near the end of each page’s HTML, right above </body>, add this HTML tag:
<script src="/js/main.js"></script>
The script tag with a src attribute will load the JavaScript at the given URL and then run it immediately.
I recommend putting it at the end of your <body> element and not inside the <head> because the script prevents the rest of the page from loading and displaying to the user while the script runs. If you make the script run only at the very end of the page, the page is already loaded and the user can see all of its content.

you need to do a $.fadeout on the window.beforeunload event, bye
PD: in a js file, not in a stylesheet, you can´t use JS in a stylesheet. bye.