I'm wondering if the order of the javascript in a page will affect how things work? If yes, is there any problem on my way of arranging them?
<script src="vendor/jquery/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="vendor/bootstrap/js/bootstrap.bundle.min.js"></script>
<script src="vendor/jquery-easing/jquery.easing.min.js"></script>
<script src="js/sb-admin-2.min.js"></script>
<script src="vendor/chart.js/Chart.min.js"></script>
<script src="vendor/datatables/jquery.dataTables.min.js"></script>
<script src="vendor/datatables/dataTables.bootstrap4.min.js"></script>
<script src="js/demo/chart-area-demo.js"></script>
<script src="js/demo/chart-pie-demo.js"></script>
<script src="js/demo/datatables-demo.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
Yes it makes a huge difference and you have made the mistake of including TWO versions of jQuery, bootstrap and datatables. You need to remove
<script src="vendor/jquery/jquery.min.js"></script>
<script src="vendor/datatables/jquery.dataTables.min.js"></script>
and
<script src="vendor/datatables/dataTables.bootstrap4.min.js"></script>
and move the bootstrap one to before the data tables
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
<script src="https://cdn.datatables.net/1.10.23/js/jquery.dataTables.min.js"></script>
<script src="vendor/jquery-easing/jquery.easing.min.js"></script>
<script src="js/sb-admin-2.min.js"></script>
<script src="vendor/chart.js/Chart.min.js"></script>
<script src="js/demo/chart-area-demo.js"></script>
<script src="js/demo/chart-pie-demo.js"></script>
<script src="js/demo/datatables-demo.js"></script>
I would personally have EITHER CDN OR downloaded versions
But take a look at the guidelines
https://getbootstrap.com/docs/5.0/getting-started/introduction/
https://cdn.datatables.net/
The order of the javascript files in an html file only makes a difference if they are interdependent. For example if you have a script that uses JQuery and you have declared the jquery script after your script, you will have problem. So when you have a script (or scripts) that is used from another script (or scripts) declare first the script (or scripts) that is used and then the script (or scripts) that uses it.
Related
I use lodash accross my website and its now telling me that uniqBy is not a function. I thought maybe this was due to me using an older version of the library so I updated it and still had the same issue. I do bring it into the html via ejs <%- include %> but when using something like ejs lodash wont work as expected. I try to use _.uniqBy to sort an array but unless I specifically insert a lodash script into html it wont work.
<%- include ../partials/scripts.ejs%>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript" src="https://cdn.datatables.net/v/bs/dt-1.10.12/datatables.min.js"></script>
<script type="text/javascript" src="/js/accounting/dataTables.buttons.min.js"></script>
<script type="text/javascript" src="/js/accounting/jszip.min.js"></script>
<script type="text/javascript" src="/js/accounting/pdfmake.min.js"></script>
<script type="text/javascript" src="/js/accounting/vfs_fonts.js"></script>
<script type="text/javascript" src="/js/accounting/buttons.html5.min.js"></script>
<!-- <script type="text/javascript" src="/js/lodash.js"></script> Works with this -->
<script type="text/javascript">
// Returns undefined unless the lodash script tag is uncommented
console.log(_.uniqBy);
</script>
<script type="text/javascript" src="/js/cost/list.js">//Lodash used in here</script>
<%- include ../partials/footer.ejs%>
And the scripts partial is:
<script type="text/javascript" src="/js/jquery.min.js"></script>
<script type="text/javascript" src="/js/bootstrap.min.js"></script>
<script type="text/javascript" src="/js/bootstrap-formhelpers.min.js"></script>
<script type="text/javascript" src="/js/select2.min.js"></script>
<script type="text/javascript" src="/js/moment.min.js"></script>
<script type="text/javascript" src="/js/lodash.js"></script>
<script type="text/javascript" src="/js/jquery.cookiebar.js"></script>
<script type="text/javascript" src="/js/slide.js"></script>
<script type="text/javascript" src="/js/email.js"></script>
<script type="text/javascript" src="/js/jspdf.js"></script>
In my cost/list.js I use jquery with document.ready() before I use lodash so my question is why does this happen? I thought maybe first it was scope but It cant be as I use these files everywhere and never had this issue before. Then I thought maybe it was the loading as the ejs including of partials could load either before or after the page is ready but my js cost/list.js should wait for it to be ready due to the $(document).ready(). Im not sure what the issue is and any ideas as to whats happening with the ejs includes would be great.
Went through the page a bit more and found out its pdfmake use lodash too but they use an older version(3.x) whereas today im on (4.17.4) this is why as pdfmakes lodash comes last it takes precedence and becomes the global. Hopefully this will help someone in the future. Check your scripts I went through them one by one moving my lodash script after every other script and found it that way
I have included jquery in javascript but it is not working wt to do
i hv also included jquery in it
<script type="text/javascript" src="/home/aman/html/book_cricket.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11./jquery.min.js"></script>
jQuery should run at the beginning
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11./jquery.min.js"></script>
<script type="text/javascript" src="/home/aman/html/book_cricket.js"></script>
The browser reads the javascript files in the order you place them.
Try reversing them to
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11./jquery.min.js"></script>
<script type="text/javascript" src="/home/aman/html/book_cricket.js"></script>
I encountered a problem where my AngularJS webpages don't load properly sometimes. When this happens, the code in the corresponding controller does not run. It only happens rarely. I suspect that this could be due to the loading order of AngularJS files. Perhaps there are other possible causes. Please alert me if you can think of any. Below is my code showing the loading order of the html page;
<script src="lib/angular/angular.min.js"></script>
<script src="lib/angular/angular-route.min.js"></script>
<script src="js/app.js"></script>
<script src="js/services.js"></script>
<script src="js/controllers.js"></script>
<script src="js/filters.js"></script>
<script src="js/directives.js"></script>
<script src="vendor/dialogs.min.js" type="text/javascript"></script>
<script src="lib/angular/angular-sanitize.min.js"></script>
<script src="vendor/angular-translate.min.js"></script>
<link href="vendor/dialogs.css" rel="stylesheet">
Is there anything wrong?
First Load angular library:
<script src="lib/angular/angular.min.js"></script>
<script src="lib/angular/angular-route.min.js"></script>
<script src="vendor/dialogs.min.js" type="text/javascript"></script>
<script src="lib/angular/angular-sanitize.min.js"></script>
<script src="vendor/angular-translate.min.js"></script>
After that load your controllers, services, filters, directives
<script src="js/services.js"></script>
<script src="js/controllers.js"></script>
<script src="js/filters.js"></script>
<script src="js/directives.js"></script>
Finally, now you can load your app init file
<script src="js/app.js"></script>
Although the order is correctly mentioned by Nitish,
you should consider using a script loading tools such as require js as mantaining the inter-dependency between libraries will get messy once you have a large no of files to include.
i have these jquery files included but some plugins work and some are not when i change squence then some plugins work but other give error. Please tell me best squence of these files. Thanks
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<script type="text/javascript" src="js/jquery-1.9.1.js"></script>
<script src="js/jquery-ui.js" type="text/javascript"></script>
<script type="text/javascript" src="js/urdutextbox.js"></script>
<script type="text/javascript">
var jQuery_1_10_2 = $.noConflict(true);
</script>
<script type="text/javascript" src="js/jquery-ui.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-timepicker-addon.js"></script>
<script type="text/javascript" src="js/jquery-ui-sliderAccess.js"></script>
<script type="text/javascript" src="js/jquery-ui-timepicker-addon.min.js"></script>
<script src="js/sitefunction.js"></script>
<script src="js/jquery.cookie.js"></script>
This would work.
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
<script type="text/javascript" src="js/jquery-ui.min.js"></script>
<script type="text/javascript" src="js/jquery-ui-sliderAccess.js"></script>
<script type="text/javascript" src="js/jquery-ui-timepicker-addon.min.js"></script>
<script src="js/sitefunction.js"></script>
<script src="js/jquery.cookie.js"></script>
<script type="text/javascript" src="js/urdutextbox.js"></script>
Also note that you do not need to include normal and minified versions (*.min.js). And since jquery-ui.js depends on jquery core code, it could be kept down to jquery core.
Also please note that you may not require two or more versions of a jquery core thing as it might not make any sense. Instead if you really wish to have some recently added functionality, please make your own custom file by going to jquery custom build at this link.
Just because a version of jQuery requires a certain version doesn't mean it won't work with a later version.
I would try to remove:
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery-1.10.2.min.js"></script>
I would also completely remove this since there's no way for a plugin to work after you remove jQuery as a global.
<script type="text/javascript">
var jQuery_1_10_2 = $.noConflict(true);
</script>
Also, you're free to remove the type="text/javascript" from your script tags, no issue with it but it's not needed.
I'd put your site functions after all the other scripts are include as well, and I'd put jquery.cookie.js before the ui stuff, just as preference.
So, I'd end up with:
<script src="js/jquery-1.9.1.js"></script>
<script src="js/jquery.cookie.js"></script>
<script src="js/urdutextbox.js"></script>
<script src="js/jquery-ui.min.js"></script>
<script src="js/jquery-ui-timepicker-addon.js"></script>
<script src="js/jquery-ui-sliderAccess.js"></script>
<script src="js/jquery-ui-timepicker-addon.min.js"></script>
<script src="js/sitefunction.js"></script>
I am using jquery and its related plugins in my site.
Since i use more js. for visiting each page in my site. all the js loads so site loading time increases.
How to use js libraries efficiently without loading js for each page visit.
UPDATE:
I am using
<!-- JQUERY-->
<script src="{$TEMPLATE_FACK}/js/jquery.js" type="text/javascript"></script>
<script type="text/javascript" language="javascript">
$.noConflict();
</script>
<script src="{$TEMPLATE_FACK}/js/global.js" type="text/javascript"></script>
<!-- JQUERY.VALIDATE SCRIPT -->
<script src="{$TEMPLATE_FACK}/js/jquery.validate.js" type="text/javascript"></script>
<!--JS VALIDATION SCRIPTS -->
<script type="text/javascript" language="javascript" src="{$TEMPLATE_FACK}/js/scriptaculous/lib/prototype.js"></script>
<script type="text/javascript" language="javascript" src="{$TEMPLATE_FACK}/js/scriptaculous/src/scriptaculous.js"></script>
<script type="text/javascript" language="javascript" src="{$TEMPLATE_FACK}/js/jsvalidate.js"></script>
<!--jQuery URL Script-->
<script type="text/javascript" language="javascript" src="{$TEMPLATE_FACK}/js/jquery.url.js"></script>
<!-- TINYMCE SCRIPTS -->
<script type="text/javascript" src="{$TEMPLATE_FACK}/tinymce/jquery.tinymce.js"></script>
<script src="{$TEMPLATE_FACK}/tinymce/tiny_mce_src.js" type="text/javascript"></script>
<script src="{$TEMPLATE_FACK}/js/quicktags.js" type="text/javascript"></script>
<!-- WORD COUNT -->
<script src="{$TEMPLATE_FACK}/js/jquery.wordcount.js" type="text/javascript"></script>
<!-- Thick box scripts -->
<script src="{$TEMPLATE_FACK}/js/thickbox.js" type="text/javascript"></script>
<!--JS FOR GRAPH (Highcharts Refer: http://highcharts.com/ref/#plotOptions-pie-point-events)-->
<script type="text/javascript" src="{$TEMPLATE_FACK}/js/graph/highcharts.js"></script>
<!-- 1a) Optional: add a theme file -->
<!--
<script type="text/javascript" src="{$TEMPLATE_FACK}/js/graph/themes/gray.js"></script>
-->
<!-- 1b) Optional: the exporting module -->
<!--<script type="text/javascript" src="{$TEMPLATE_FACK}/js/graph/modules/exporting.js"></script>-->
<!--JS FOR Tag adding in Faq add1.html - added by Mogan Dec 02, 2010-->
<script src="{$TEMPLATE_FACK}/js/create_html.js" type="text/javascript"></script>
<!--FANCY BOX -->
<script type="text/javascript" src="{$TEMPLATE_FACK}/js/fancybox/jquery.mousewheel-3.0.4.pack.js"></script>
<script type="text/javascript" src="{$TEMPLATE_FACK}/js/fancybox/jquery.fancybox-1.3.2.js"></script>
This much of js i am using in header section. once i am visiting each page all these loads again and again
The user doesn't have to load it each time, just be sure to set your cache headers correctly so the user caches the JavaScript files that are reused. For libraries specifically (since this is tagged jQuery), look at using a CDN - which will also have the cache headers I mention, as well as parallelizing the download since it's not on your own domain.
Also, you can use a Content delivery network (CDN) for libraries like jQuery etc. Google provides a bunch.
Additionally to the previous answer you should minify all javascript file together, optionally you can use gzip compression.