Interesting problem here from some inherited code I recently looked at. I'm trying to add a compression module to a project. It is loading all the JS and CSS files, combining them, minifying them, and compressing them. I've tried a number of solutions, but all of them have one fatal problem.
I have some javascript that is being loaded via Page.ClientScript.RegisterClientScriptBlock in the PreRender of the MasterPage. The compression module is loading as a Script Tag link in the MasterPage, but when I run the page... the code from the PreRender is lopped on top and is giving me a '$ is undefined' error, telling me jQuery isn't loaded yet.
Furthermore, I can't seem to get past the same problem when it comes to inline javascript on content pages.
Any ideas as to what is causing this? Enlighten me as I have no clue.
If have done this before with RegisterStartupScript (instead of RegisterClientScriptBlock) and called the $(document).ready(function() from WITHIN that script.
If the script tag link that eventually expands out to jquery is not in the head, but in the body of the page, then $ will be undefined when the script block executes, unless it is included in the html before the opening <form /> tag in the rendered html, which I understand is where RegisterClientScriptBlock spits out its script (just after that opening tag).
If this is not the case, and the joined/minified script is in the head, then I'd use a browser debugger such as Firebug or IE Dev Tools to verify that the jquery script is being correctly included in your combined script.
I know this answer is late to the party, but try calling ClientScript.RegisterClientScriptBlock in your OnPreRenderComplete (rather than OnPreRender) handler. This inserts the code later in the page rendering process.
All your jQuery code should be written inside the DOM-ready function:
$(function() {
// your code here
});
indipendently from where you place it in the page, 'cause the jQuery() function isn't avalaible before.
Related
I have an issue loading a form in a bootstrap modal. I am using a service called Formstack to embed a form into my website. The embed code provided to me uses an external script to load the proper CSS, HTML, and JS into my page. The problem is that I am getting 10K+ warnings in my browser console once the page is loaded. All the warnings are the same. Each warning reads:
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.
Here is a link to that javascript file: https://trustdale.formstack.com/forms/js.php/business_contact
Looking at the external javascript, EVERY line begins with document.write. I dont know if it matters, but I am loading the form in a bootstrap modal. Also note that the form loads totally fine... unless I'm missing something. How would I load my form without all the warnings?
I figured it out... I dont quite understand it yet, but I stumbled upon this https://github.com/krux/postscribe, which seems to make my code work. I created an empty div in my modal with an id of #formCode, then placed this section of code in my footer:
<script>
$( function(){
postscribe('#formCode', '<script src={!! $contact_form !!}><\/script>');
});
</script>
$contact_form only contains the value of my script "src" attribute.
Again, dont know how it works, just does. Maybe someone could elaborate
I am adding an html file to my GWT page like so:
HTML htmlPanel = new HTML();
String html = MyHtml.INSTANCE.getHtml().getText();
htmlPanel.setHTML(html);
RootPanel.get().add(htmlPanel);
and that works ... but the embedded script files don't run. I see the line in Chrome's Elements tab where the script should be loaded, but apparently it is not (doesn't show up in the Scripts tab, and debugger lines are not hit).
As a test, I loaded the html file straight into my browser (not via GWT), and the script does show up in the Scripts tab and it does run the code (so it's not an issue with the script tag itself).
So ... why/how do the scripts not run when embedded by GWT? (I wouldn't know how to keep an embedded script from running if I tried!) ;o)
Do I have to use the ScriptInjector to make this work (I'm having my own problems with getting that working, which is a subject for another thread)? If so ... why?
Thanks for your help!
Creating the script by adding it to an HTML widget and appending it to the page will not work, this is not supported by the browser. GWT isn't doing this, the browser is, or rather, the browser is doing it because of how the HTML widget works. For specifics on why this is the case, see the great answer at https://stackoverflow.com/a/13392818/860630 that digs into the details.
There are several other ways you can do this, but they all boil down to the work that the ScriptInjector is already doing - if ScriptInjector doesn't work for you, it seems unlikely that the other options will behave either. Maybe edit your question to use ScriptInjector and describe your issues, or ask a new question with it? The only cases where I've seen ScriptInjector not work is related to $wnd, or which page the script is appended to (see com.google.gwt.core.client.ScriptInjector#TOP_WINDOW).
I have a 3rd party script that displays some data on my site. When the script loads it breaks all of the JS on any page the script is in. I remove the script and my page works without issue.
Are there ways to prevent 3rd party scripts from interacting with my page in a way the breaks the page?
Notes:
I have no access to the 3rd party script to edit.
I am using jQuery for the scripts that are breaking. I have in place jQuery.noConflict yet it still breaks the page.
I have attempted to load the script in an iframe to see if that made a difference. It did not.
The script does write data to the page, mainly CSS and HTML
Note: The below code may contain references/links to drug content, mainly marijuana.
I am building a site for a medical marijuana dispensary. I am importing the menu of the dispensary from a site called WeedMaps. Their embed code looks like this:
<script type="text/javascript">var wmenu_id = 1111;</script> //The number correlates to the menu I need to pull, I have changed it in this question
<script type="text/javascript" src="http://legalmarijuanadispensary.com/components/com_weedmenu/weedmenu-widget.js"></script>
When I use the above code the JS of my site breaks. How to I prevent my code from breaking when using 3rd party scripts over which I have no control.
UPDATE
Here is a JS Fiddle. The menu opens but doesn't close properly. Remove the script that is generating the menu from weedmaps and the menu works correctly. (The weedmaps menu script is in the bottom of the HTML panel.)
Hmm, not having much luck. I'll add what I have, since it may trigger further ideas from you. However, in short, I think their script isn't written particularly well, and that they really do need to fix it on their end.
As it stands, Firefox shows this error when animating the menus:
TypeError: jQuery.easing[jQuery.easing.def] is not a function
This blog suggests that this occurs when the Easing plugin is loaded before jQuery. Fine, I thought - we just need to load the WeedMenu script after our jQuery has loaded. So I tried the following (with help from here):
$j.getScript('http://legalmarijuanadispensary.com/components/com_weedmenu/weedmenu-widget.js');
That gave me this error:
A call to document.write() from an asynchronously-loaded external script was ignored.
Turns out that occurs as a result of the WM script using document.write, which is desperately out of date. So that lead me on to find crapLoader, which is meant to handle this sort of thing:
crapLoader.loadScript("http://legalmarijuanadispensary.com/components/com_weedmenu/weedmenu-widget.js", "menu-script");
Unfortunately that brings me back to the original Easing error.
Here's my fork - let me know if you find anything!
The script is not well written, I was able to solve my issue by removing a line of code from the script. The link I provided list to a longer script. The script had this line of code:
try {
b("http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"), "function" != typeof wmenu_strains_callback && b("http://legalmarijuanadispensary.com/components/com_weedmenu/weedmenu.js", !0)
}
if I remove b("http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"), then the script works and my page works. What was happening was the script was inserting jQuery into the bottom of my head and breaking the rest of my javascript.
I have no idea how to describe this accurately/intelligently because it seems to be completely impossible, yet there must some reason for it.
I am trying to leverage jquery, jquery-ui, qtip (tooltip for jquery) and highcharts (javascript charting), but for purpose of post I could just as easily been only using jQuery and jQuery-UI.
If I include my <script/> tags at the bottom of my <head/> element I get an error trying to call the .slider() extension to configure my sliders. But if I put the <script/> tags right before the closing of my <body/> element then everything works. To illustrate, the following will not work (obviously some pseudo code below):
<head>
<script jquery.js/>
<script jquery-ui.js/>
</head>
<body>
... html ...
<script type="text/javascript">
$(document).ready(function () {
$(".slider").slider( { .. options .. } );
} )
</script>
... more html *including* the .slider elements
</body>
However, if I move the two jQuery script tags to be right above the </body> closing element things work. When the script tags are in the head element and I debug my application, basically the page does appear to have completely loaded and Visual Studio highlights the line calling the .slider() function saying it doesn't know what slider() is. Looking at the call stack, it appears to be correctly calling it from the document ready function...the mark up all appears to be there as well, making me believe the document truly is ready.
Now I didn't include things that are required by asp.net 1.1/2.0 site in my pseudo code, namely a <form/> element with runat="server' and the use of a <asp:ScriptManager/> tag (we needed that for parsing monetary values from different cultures leveraging Microsoft Ajax). I can't believe they would be causing the problem, but maybe they are. Additionally, asp.net injects several of its own script sections (i.e. for validation, post back, etc.)
Regarding the form tag...all the html and document.ready markup would be inside the form tag, while the script tags are always outside of the form tag (either above it, in the head or below it at the bottom of the body).
Obviously I could leave the script tags at the bottom, and I very well may end up doing that, but I am trying to get a clean 'template site' of which to use when creating new client sites and it just feels wrong that I have a restriction forcing me to put those tags at the bottom of the html. I'm sure our framework code (or maybe asp.net's) is simply inserting something that is causing problems/conflicts with jQuery, but I don't really know how to go about debugging/diagnosing what that problem is. So if anyone has any suggestions I'd greatly appreciate it.
It looks like jQuery 1.3.2 is being loaded by ASP.NET (see your second WebResource.axd). The two library versions are overwriting each other. Thus the reason it works when you load 1.6.2 at the end of the page.
I have searched this web looking for an answer, but it seems that this time I'm not so lucky, so I am forced to ask. I apologize if it's already answered (could not find it). And yes, English is not my first language, so I also apologize for my spelling mistakes, I try my best.
This is my problem, using Tomcat 5.5, Struts 1.3, JRE 1.5 and I'm using firefox 3.5.6.
In my jsp page I cannot seem to put any src="path/path" in my <script> I have tried deleting the src and all works well, but my project is going to need a lot of use from jquery and I do not want to copy/paste all the js file in every jsp.
This is my code:
<script type="text/javascript" src="js/jquery-1.3.2.js">
function showMySelf(){
alert("Hello World!");
}
(... plus other stuff code that actually uses jquery functions)
</script>
and the submit button:
<input type="submit" onclick="showMySelf()">
When I click the button, nothing happens (well it actually repaints the page) and when I delete the "src" tag from the script and add all the jquery code to the page it all works well.
I have tried putting another slash in the path as "/js/jquery-1.3.2.js" and returns an error.
I have tried using ResolveURL and it doesn't seem to give me better results.
I have also tried changing the js file to another file ("generics.js" and "js.js"), I also tried with "js/*.js".
Any of theese solutions have archived anything.
I have also tried using the struts tags (like html:submit) but it also did not work.
The path is actually right, since looking the code in my web browser gives me a link to the js file. So I suposse the browser knows were to look for my js file, it does not give me an error or a broken link to the file.
Any ideas of why this is happening?
Thank you all.
Random.
You can not use a script element to load an external file and put code in it at the same time. You need to use two script elements:
<script type="text/javascript" src="js/jquery-1.3.2.js"></script>
<script type="text/javascript">
function showMySelf(){
alert("Hello World!");
}
(... plus other stuff code that actually uses jquery functions)
</script>
I think Gumbo solved it.
As a sidenote, a very good way to find out whether a browser can load a JS file is the "Net tab" in Firebug in Firefox. It shows all loaded (and failed) requests of the current page.
The two most likely options are:
a) You are including HTML in your JS file (i.e. <script> tags)
Take it out.
b) You have the wrong URI and when you attempt to resolve your relative URI manually you do so incorrectly
Look at your server access logs to see what is actually being requested (or use a tool such as Firebug)
The first thing to do in such case. Install Firebug and look at the "Console" panel (for possible syntax errors) and the "Net" panel to see whether your jQuery sources are being fetched correctly. The 2nd column there shows the request status code.
alt text http://img46.imageshack.us/img46/6224/jqueryfirebugtmp.jpg
(full size image)