JSFiddle - React, Tailwind, and code Playground

HTML

<ul data-bind="foreach: steps">
    <li>
        <div data-bind="text: $data"></div>
        <!-- ko if: $index() !== ($parent.steps().length - 1) -->
            <span class="inscription-steps-separator">//</span>
        <!-- /ko --> 
    </li>    
</ul>

JavaScript

var viewModel = (function()
{
    var self = {};

    self.steps = ko.observableArray([1,2,3,4,5]);

    return self;
}());
                 
ko.applyBindings(viewModel);