We Keep Coding

Why does the popup model stops working when I add order for API [duplicate]

A project I'm working on requires the use of jQuery on customers' Web pages. Customers will insert a chunk of code that we'll supply which includes a few <script> elements that build a widget in a <script>-created <iframe>. If they aren't already using the latest version of jQuery, this will also include (most likely) a <script> for Google's hosted version of jQuery.
The problem is that some customers may already have an older version of jQuery installed. While this may work if it's at least a fairly recent version, our code does rely on some recently introduced functionality in the jQuery library, so there are bound to be instances when a customer's jQuery version is just too old. We can't require that they upgrade to the latest version of jQuery.
Is there any way to load a newer version of jQuery to use only within the context of our code, that will not interfere with, or affect, any code on the customer's page? Ideally, maybe we could check for the presence of jQuery, detect the version, and if it's too old, then somehow load the most recent version just to use for our code.
I had the idea of loading jQuery in an <iframe> in the customer's domain that also includes our <script>, which seems like it might be feasible, but I'm hoping there's a more elegant way to do it (not to mention without the performance and complexity penalties of extra <iframe>s).

Yes, it's doable due to jQuery's noconflict mode. http://blog.nemikor.com/2009/10/03/using-multiple-versions-of-jquery/
<!-- load jQuery 1.1.3 -->
<script type="text/javascript" src="http://example.com/jquery-1.1.3.js"></script>
<script type="text/javascript">
var jQuery_1_1_3 = $.noConflict(true);
</script>
<!-- load jQuery 1.3.2 -->
<script type="text/javascript" src="http://example.com/jquery-1.3.2.js"></script>
<script type="text/javascript">
var jQuery_1_3_2 = $.noConflict(true);
</script>
Then, instead of $('#selector').function();, you'd do jQuery_1_3_2('#selector').function(); or jQuery_1_1_3('#selector').function();.

After looking at this and trying it out I found it actually didn't allow more than one instance of jquery to run at a time. After searching around I found that this did just the trick and was a whole lot less code.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
<script>var $j = jQuery.noConflict(true);</script>
<script>
$(document).ready(function(){
console.log($().jquery); // This prints v1.4.2
console.log($j().jquery); // This prints v1.9.1
});
</script>
So then adding the "j" after the "$" was all I needed to do.
$j(function() {
$j('.button-pro').on('click', function() {
var el = $('#cnt' + this.id.replace('btn', ''));
$j('#contentnew > div').not(el).animate({
height: "toggle",
opacity: "toggle"
}, 100).hide();
el.toggle();
});
});

Taken from http://forum.jquery.com/topic/multiple-versions-of-jquery-on-the-same-page:
Original page loads his "jquery.versionX.js" -- $ and jQuery belong to versionX.
You call your "jquery.versionY.js" -- now $ and jQuery belong to versionY, plus _$ and _jQuery belong to versionX.
my_jQuery = jQuery.noConflict(true); -- now $ and jQuery belong to versionX, _$ and _jQuery are probably null, and my_jQuery is versionY.

You can have as many different jQuery versions on your page as you want.
Use jQuery.noConflict():
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/javascript"></script>
<script>
var $i = jQuery.noConflict();
alert($i.fn.jquery);
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
var $j = jQuery.noConflict();
alert($j.fn.jquery);
</script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script>
var $k = jQuery.noConflict();
alert($k.fn.jquery);
</script>
DEMO | Source

It is possible to load the second version of the jQuery use it and then restore to the original or keep the second version if there was no jQuery loaded before. Here is an example:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript">
var jQueryTemp = jQuery.noConflict(true);
var jQueryOriginal = jQuery || jQueryTemp;
if (window.jQuery){
console.log('Original jQuery: ', jQuery.fn.jquery);
console.log('Second jQuery: ', jQueryTemp.fn.jquery);
}
window.jQuery = window.$ = jQueryTemp;
</script>
<script type="text/javascript">
console.log('Script using second: ', jQuery.fn.jquery);
</script>
<script type="text/javascript">
// Restore original jQuery:
window.jQuery = window.$ = jQueryOriginal;
console.log('Script using original or the only version: ', jQuery.fn.jquery);
</script>

I would like to say that you must always use jQuery latest or recent stable versions. However if you need to do some work with others versions then you can add that version and renamed the $ to some other name. For instance
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script>var $oldjQuery = $.noConflict(true);</script>
Look here if you write something using $ then you will get the latest version. But if you need to do anything with old then just use$oldjQuery instead of $.
Here is an example:
$(function(){console.log($.fn.jquery)});
$oldjQuery (function(){console.log($oldjQuery.fn.jquery)})
Demo

<script type="text/javascript"
src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>var $j = $.noConflict(true);</script>
It was not working for me then I changed it to
<script>var jQuery = $.noConflict(true);</script>
and it worked for me.

To further improve Juan Vidal's answer, it is worth noting that if you use multiple jquery plugins with one version (eg 3.3.1) and multiple jquery plugins with another version(eg 1.10.2), for older version to work (and it's plugins) you must dig into plugin's minified/unminified .js file(s) and alter the line that will be something like this:
Example 1: module.exports=a:a(jQuery) to module.exports=a:a(my_jQuery)
Example 2: b(a,require("jquery")):b(a,a.jQuery)} to this: or b(a,require("jquery")):b(a,a.my_jQuery)}

How to write some script src <script src=""> in javascript [duplicate]

A project I'm working on requires the use of jQuery on customers' Web pages. Customers will insert a chunk of code that we'll supply which includes a few <script> elements that build a widget in a <script>-created <iframe>. If they aren't already using the latest version of jQuery, this will also include (most likely) a <script> for Google's hosted version of jQuery.
The problem is that some customers may already have an older version of jQuery installed. While this may work if it's at least a fairly recent version, our code does rely on some recently introduced functionality in the jQuery library, so there are bound to be instances when a customer's jQuery version is just too old. We can't require that they upgrade to the latest version of jQuery.
Is there any way to load a newer version of jQuery to use only within the context of our code, that will not interfere with, or affect, any code on the customer's page? Ideally, maybe we could check for the presence of jQuery, detect the version, and if it's too old, then somehow load the most recent version just to use for our code.
I had the idea of loading jQuery in an <iframe> in the customer's domain that also includes our <script>, which seems like it might be feasible, but I'm hoping there's a more elegant way to do it (not to mention without the performance and complexity penalties of extra <iframe>s).

Yes, it's doable due to jQuery's noconflict mode. http://blog.nemikor.com/2009/10/03/using-multiple-versions-of-jquery/
<!-- load jQuery 1.1.3 -->
<script type="text/javascript" src="http://example.com/jquery-1.1.3.js"></script>
<script type="text/javascript">
var jQuery_1_1_3 = $.noConflict(true);
</script>
<!-- load jQuery 1.3.2 -->
<script type="text/javascript" src="http://example.com/jquery-1.3.2.js"></script>
<script type="text/javascript">
var jQuery_1_3_2 = $.noConflict(true);
</script>
Then, instead of $('#selector').function();, you'd do jQuery_1_3_2('#selector').function(); or jQuery_1_1_3('#selector').function();.

After looking at this and trying it out I found it actually didn't allow more than one instance of jquery to run at a time. After searching around I found that this did just the trick and was a whole lot less code.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
<script>var $j = jQuery.noConflict(true);</script>
<script>
$(document).ready(function(){
console.log($().jquery); // This prints v1.4.2
console.log($j().jquery); // This prints v1.9.1
});
</script>
So then adding the "j" after the "$" was all I needed to do.
$j(function() {
$j('.button-pro').on('click', function() {
var el = $('#cnt' + this.id.replace('btn', ''));
$j('#contentnew > div').not(el).animate({
height: "toggle",
opacity: "toggle"
}, 100).hide();
el.toggle();
});
});

Taken from http://forum.jquery.com/topic/multiple-versions-of-jquery-on-the-same-page:
Original page loads his "jquery.versionX.js" -- $ and jQuery belong to versionX.
You call your "jquery.versionY.js" -- now $ and jQuery belong to versionY, plus _$ and _jQuery belong to versionX.
my_jQuery = jQuery.noConflict(true); -- now $ and jQuery belong to versionX, _$ and _jQuery are probably null, and my_jQuery is versionY.

You can have as many different jQuery versions on your page as you want.
Use jQuery.noConflict():
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js" type="text/javascript"></script>
<script>
var $i = jQuery.noConflict();
alert($i.fn.jquery);
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script>
var $j = jQuery.noConflict();
alert($j.fn.jquery);
</script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script>
var $k = jQuery.noConflict();
alert($k.fn.jquery);
</script>
DEMO | Source

It is possible to load the second version of the jQuery use it and then restore to the original or keep the second version if there was no jQuery loaded before. Here is an example:
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script type="text/javascript">
var jQueryTemp = jQuery.noConflict(true);
var jQueryOriginal = jQuery || jQueryTemp;
if (window.jQuery){
console.log('Original jQuery: ', jQuery.fn.jquery);
console.log('Second jQuery: ', jQueryTemp.fn.jquery);
}
window.jQuery = window.$ = jQueryTemp;
</script>
<script type="text/javascript">
console.log('Script using second: ', jQuery.fn.jquery);
</script>
<script type="text/javascript">
// Restore original jQuery:
window.jQuery = window.$ = jQueryOriginal;
console.log('Script using original or the only version: ', jQuery.fn.jquery);
</script>

I would like to say that you must always use jQuery latest or recent stable versions. However if you need to do some work with others versions then you can add that version and renamed the $ to some other name. For instance
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script>var $oldjQuery = $.noConflict(true);</script>
Look here if you write something using $ then you will get the latest version. But if you need to do anything with old then just use$oldjQuery instead of $.
Here is an example:
$(function(){console.log($.fn.jquery)});
$oldjQuery (function(){console.log($oldjQuery.fn.jquery)})
Demo

<script type="text/javascript"
src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>var $j = $.noConflict(true);</script>
It was not working for me then I changed it to
<script>var jQuery = $.noConflict(true);</script>
and it worked for me.

To further improve Juan Vidal's answer, it is worth noting that if you use multiple jquery plugins with one version (eg 3.3.1) and multiple jquery plugins with another version(eg 1.10.2), for older version to work (and it's plugins) you must dig into plugin's minified/unminified .js file(s) and alter the line that will be something like this:
Example 1: module.exports=a:a(jQuery) to module.exports=a:a(my_jQuery)
Example 2: b(a,require("jquery")):b(a,a.jQuery)} to this: or b(a,require("jquery")):b(a,a.my_jQuery)}

How do I implement JQuery.noConflict() ?

I am using both javascript and jquery code on the same html page. For some reason, the jQuery library is stopping my native javascript code from working properly.
I found this page: jQuery No Conflict that says you can use a jquery.noConflict to release $ back to javascript. However, I'm not sure how to do this?
Specifically, I'm not sure how to implement this correctly? Where does the the Jquery code go, where does the JS code go?
My code is below:
<script type="text/javascript">
$.noConflict();
// Code that uses other library's $ can follow here.
</script>

jQuery.noConflict will reset the $ variable so it's no longer an alias of jQuery. Aside from just calling it once, there's not much else you really need to do. Though, you can create your own alias with the return value, if you'd like:
var jq = jQuery.noConflict();
And, generally, you want to do this right after including jQuery and any plugins:
<script type="text/javascript" src="/path/to/jquery.js"></script>
<script type="text/javascript" src="/path/to/jquery-plugin.js"></script>
<script type="text/javascript">
jQuery.noConflict();
// Code that uses other library's $ can follow here.
</script>
<script type="text/javascript" src="/path/to/prototype.js"></script>
You can also go one step further and free up jQuery with noConflict(true). Though, if you take this route, you'll definitely want an alias as neither $ nor jQuery will probably be what you want:
var jq = jQuery.noConflict(true);
I think this last option is mostly used for mixing versions of jQuery, particularly for out-dated plugins when you want to update jQuery itself:
<script type="text/javascript" src="jquery-1.4.4.js"></script>
<script type="text/javascript" src="jquery-older-plugin.js"></script>
<script type="text/javascript">
var jq144 = jQuery.noConflict(true);
</script>
<script type="text/javascript" src="jquery-1.6.4.js"></script>
<script type="text/javascript" src="jquery-newer-plugin.js"></script>

By default, jquery uses the variable jQuery and the $ is used for your convenience. If you want to avoid conflicts, a good way is to encapsulate jQuery like so:
(function($){
$(function(){
alert('$ is safe!');
});
})(jQuery)

If I'm not mistaken:
var jq = $.noConflict();
then you can call jquery function with jq.(whatever).
jq('#selector');

It's typically used if you are using another library that uses $.
In order to still use the $ symbol for jQuery, I typically use:
jQuery.noConflict()(function($){
// jQuery code here
});

It allows for you to give the jQuery variable a different name, and still use it:
<script type="text/javascript">
$jq = $.noConflict();
// Code that uses other library's $ can follow here.
//use $jq for all calls to jQuery:
$jq.ajax(...)
$jq('selector')
</script>

If you look at the examples on the api page there is this:
Example: Creates a different alias instead of jQuery to use in the rest of the script.
var j = jQuery.noConflict();
// Do something with jQuery
j("div p").hide();
// Do something with another library's $()
$("content").style.display = 'none';
Put the var j = jQuery.noConflict() after you bring in jquery and then bring in the conflicting scripts. You can then use the j in place of $ for all your jquery needs and use the $ for the other script.

In addition to that, passing true to $.noConflict(true); will also restore previous (if any) global variable jQuery, so that plugins can be initialized with correct jQuery version when multiple versions are being used.

You simply assign a custom variable for JQuery to use instead of its default $. JQuery then wraps itself in a new function scope so $ no longer has a namespace conflict.
<script type="text/javascript">
$jQuery = $.noConflict();
// Other library code here which uses '$'
$jQuery(function(){ /* dom ready */ }
</script>

The noConflict() method releases the $ shortcut identifier, so that other scripts can use it for next time.
Default jquery $ as:
// Actin with $
$(function(){
$(".add").hide();
$(".add2").show();
});
Or as custom:
var j = jQuery.noConflict();
// Action with j
j(function(){
j(".edit").hide();
j(".add2").show();
});

<script src="JavascriptLibrary/jquery-1.4.2.js"></script>
<script>
var $i = jQuery.noConflict();
// alert($i.fn.jquery);
</script>
<script src="JavascriptLibrary/jquery-1.8.3.js"></script>
<script>
var $j = jQuery.noConflict();
//alert($j.fn.jquery);
</script>
<script src="JavascriptLibrary/jquery.colorbox.js"></script>
<script src="Js/jquery-1.12.3.js"></script>
<script>
var $NJS = jQuery.noConflict();
</script>
You can do it like this:
<script>
$i.alert('hi i am jquery-1.4.2.js alert function');
$j.alert('hi i am jquery-1.8.3.js alert function');
</script>

Today i have this issue because i have implemented "bootstrap menu" that uses a jQuery version along with "fancybox image gallery". Of course one plugin works and the other not due to jQuery conflict but i have overcome it as follow:
First i have added the "bootstrap menu" Js in the script footer as the menu is presented allover the website pages:
<!-- Top Menu Javascript -->
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<script type="text/javascript">
var jq171 = jQuery.noConflict(true);
</script>
And in the "fancybox" image gallery page as follow:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>window.jQuery || document.write('<script src="fancybox/js/libs/jquery-1.7.1.min.js"><\/script>')</script>
And the good thing is both working like a charm :)
Give it a try :)

I fixed that error by adding this conflict code
<script type="text/javascript">
jQuery.noConflict();
</script>
after my jQuery and js files and get the file was the error (found by the console of browser) and replace all the '$' by jQuery following this on all error js files in my Magento website. It's working for me good.
Find more details on my blog here

/* The noConflict() method releases the hold on the $ shortcut identifier, so that other scripts can use it. */
var jq = $.noConflict();
(function($){
$('document').ready(function(){
$('button').click(function(){
alert($('.para').text());
})
})
})(jq);
Live view example on codepen that is easy to understand: http://codepen.io/kaushik/pen/QGjeJQ

Multiple jQuery includes in a document

I have a document which uses old jQuery and I need new jQuery for a particular plug-in.
My document structure looks like this:
<html>
<head>
<script type="text/javascript" src="jQuery.old.js"></script>
</head>
<body>
<script>
$("#elem").doSomething(); // use old jQuery
</script>
<!-------- My plugin begins -------->
<script type="text/javascript" src="jQuery.new.js"></script>
<script type="text/javascript" src="jQuery.doSomething.js"></script>
<script>
$().ready(function(){
$("#elem").doSomething(); // use new jQuery
});
</script>
<div id="elem"></div>
<!-------- My plugin ends ---------->
<script>
$("#elem").doSomething(); // use old jQuery
</script>
</body>
</html>
I have googled for this question but found nothing that would look like my case (I need first to load old javascript (in the head) and THEN new (in the body). By the way, in the Firefox looks like old jQuery lib loads and scripts that depends on it works, but script that uses new version, and in IE and Chrome everything is exactly opposite.

To start, you should try running all the plugins under the latest version of jQuery - you may find you can use just the one latest version.
If you cannot do this, you can run in compatibility mode. Here is how.
<script src="jquery-1.3.2.js"></script>
<script>
var jqueryA = jQuery.noConflict();
</script>
<script src="jquery-1.4.2.js"></script>
<script>
var jqueryB = jQuery.noConflict();
</script>
You would need to call
jqueryB("#myelement").....
To use the alternate version.

You should use jQuery.noConflict();
See this example: http://web.enavu.com/daily-tip/using-multiple-versions-of-jquery-on-the-same-page/

As a rule of thumb, stick to one included jquery file. It's quite a large file, and there's no need to import multiple versions. I would opt for the latest version, which can be served from google or microsoft to speed up your server.
Note if you want the "doSomething" event to behave differently depending on where it's called in the page, you could try to bind the event differently. Check out the following example. As with yours, it calls the new version from within your plugin area on the page ready event - this might be later than you expected.
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
</head>
<body>
<div id="elem"></div>
<script>
var oldFunct = function (e,o) { alert("old jquery" + o); };
var newFunct = function (e,o) { alert("new jquery" + o); };
$("#elem").bind("doSomething", oldFunct);
$("#elem").trigger("doSomething", ["1"]);
</script>
<script>
$(document).ready(function(){
$("#elem").bind("doSomething", newFunct);
$("#elem").trigger("doSomething", ["2"]);
$("#elem").bind("doSomething", oldFunct);
});
</script>
<script>
$("#elem").trigger("doSomething", ["3"]);
</script>
</body>
</html>

Using JQuery and Prototype in the same page

Several of my pages use both JQuery and Protoype. Since I upgraded to version 1.3 of JQuery this appears to be causing problems, because both libraries define a function named '$'.
JQuery provides a function noConflict() which relinquishes control of $ to other libraries that may be using it. So it seems like I need to go through all my pages that look like this:
<head>
<script type="text/javascript" src="/obp/js/prototype.js"></script>
<script type="text/javascript" src="/obp/js/jquery.js"></script>
</head>
and change them to look like this:
<head>
<script type="text/javascript" src="/obp/js/prototype.js"></script>
<script type="text/javascript" src="/obp/js/jquery.js"></script>
<script type="text/javascript">
jQuery.noConflict();
var $j = jQuery;
</script>
</head>
I should then be able to use '$' for Prototype and '$j' (or 'jQuery') for JQuery. I'm not entirely happy about duplicating these 2 lines of code in every relevant page, and expect that at some point somebody is likely to forget to add them to a new page. I'd prefer to be able to do the following
Create a file jquery-noconflict.js which "includes" jquery.js and the 2 lines of code shown above
Import jquery-noconflict.js (instead of jquery.js) in all my JSP/HTML pages
However, I'm not sure if it's possible to include one JS file in another, in the manner I've described? Of course an alternate solution is simply to add the 2 lines of code above to jquery.js directly, but if I do that I'll need to remember to do it every time I upgrade JQuery.

Currently you can do something like this:
<head>
<script type="text/javascript" src="/obp/js/prototype.js"></script>
<script type="text/javascript" src="/obp/js/jquery.js"></script>
<script type="text/javascript">
var $j = jQuery.noConflict();
</script>
</head>
Then, use jQuery as $j() and Prototype's $().

It would seem that the most simple answer would be to bite the bullet, and include your noConflict lines. Of course if your pages aren't using a shared header, that solution might not be the best.

This solution worked fine:
jQuery.noConflict();
var $j = jQuery;
Now use $j in place of $ for your jQuery code, like:
$j(document).ready(function() {
$j('#div_id').innerfade({
// some stuff
});
});

I went through this for a while. It is very annoying and in the end I decided to weed out all of my old Prototype stuff and replace it with jQuery. I do like the way Prototype handles some Ajax tasks but it wasn't worth the trade off of maintaining all of the no conflict stuff.

Just as a note to others that stumble upon this. The solutions are described here (mentioning prototype specifically):
http://docs.jquery.com/Using_jQuery_with_Other_Libraries

Could you not just include the jQuery = noConflict() code in the jquery.js source file? Why would it need to be defined that way?

Your jquery-noconflict.js should look like this (be sure that all is in one line):
document.write("<script type=\"text/javascript\" src=\"/obp/js/jquery.js\"></script><script type=\"text/javascript\">jQuery.noConflict();var $j = jQuery;</script>");
... and than your include (as you already pointed out) should look like this:
<head>
<script type="text/javascript" src="/obp/js/prototype.js"></script>
<script type="text/javascript" src="/obp/js/jquery-noconflict.js"></script>
</head>
This solution solves all your requirements I think.

<script>
document.write(unescape('%3Cscript type="text/javascript" src="/obp/js/jquery.js"%3E%3C/script%3E'));
</script>
<script>
jQuery.noConflict();
var $j = jQuery;
</script>
or
var scripty = document.createElement('script');
scripty.href="/obp/js/jquery.js";
document.getElementsByTagName('head')[0].appendChild(scripty);
jQuery.noConflict();
var $j = jQuery;
EDIT:
I tried out this suggestion but the last 2 lines produce the error
jQuery is not defined

You could call jquery first and then set
var $j = jQuery;
prototype will take control of $ in this case.
Or, you could just refer to jQuery by using the full jQuery function name (jQuery).

Use Prototype below jQuery like this:
<script type="text/javascript" src="news/jquery-1.2.3.pack.js"></script>
<script type="text/javascript" src="news/jquery.easynews.js"></script>
<script type="text/javascript" src="lb/js/prototype.js"></script>
<script type="text/javascript" src="lb/js/scriptaculous.js?load=effects"></script>
<script type="text/javascript" src="lb/js/lightbox.js"></script>
<link href="lb/css/lightbox.css" rel="stylesheet" type="text/css" />
in this case the jQuery function will create a problem, so you can use this to solve the problem:
<script type="text/javascript">
jQuery.noConflict();
var JQ = jQuery;//rename $ function
</script>

If I were you, I'd drop my no conflict code into a JavaScript include file like you opined about above, and then figure out some process where I'd be setting these things I need to include in all my pages in one central place. If you are working with straight HTML files and you don't have any kind of templating/scripting capability server-side for what gets included in a document, there's always the possibility of doing a Server-Side Include.
Either way, the pain you'll experience updating each of your pages this time will come back again when you need to update your analytics code or the site footer.

You need to load it in your public/javascript/application.js
jQuery.noConflict();
var $j = jQuery;
This is also a good article that may be helpful.
JQuery & Prototype working together