Uncaught ReferenceError: $ is not defined - Datepicker - Codeigniter 3

One problem might be the use of the "defer" attribute with the <script> elements. This means that jQuery won't load until after all the other html loads.

But this bit of code will try run as soon as the view is loaded.  

Code:

$( "#datepicker" ).datepicker({inline: true});

Of course, it fails - jQuery hasn't loaded yet so $ is not defined.

Remove the defer attr from the <script> tags and see if that helps.

You might get new errors that we can address later.

Hello Guys, Thank you so much for your tipps, help and attention.

I think, until today i have made this wrong even that i've already read the whole C.I documentation.

There is a compatibility between those links format:

Code:

<?php echo base_url(); ?>assets/lib/jquery-3.3.1.min.js"

And this link format:

Code:

<?php echo base_url("assets/lib/jquery-3.3.1.min.js"); ?>"

The documentation says openly so, use the base_url like this:

1° echo base_url("blog/post/123");

2° echo base_url("images/icons/edit.png");

https://www.codeigniter.com/user_guide/h...l#base_url

base_url with controllername, method and parameter INSIDE the (parentheses) and NOT OUTSIDE.

But, definitivily i removed the "defer" attr from the <script> tags and it runs!.

Thank you so much everyone, in special @Dave_Friend It works without any error.