You can use the jQuery .data() method to store the data in an HTML element and then access the data using the .data() method in the jQuery selector.
For example, if you have an HTML element with a class of storage-url and you want to store a variable called "url" in it, you could do the following:

<div class="storage-url" data-url="{{storage::url(url)}}"></div>

Then, in your jQuery code, you can access the data using the .data() method:

var url = $('.storage-url').data('url');