JSFiddle - React, Tailwind, and code Playground
HTML
<ul class="nav nav-tabs">
<li class="one">One Code</li>
<li class="two">Two Code</li>
<li class="three">Three Code</li>
</ul>
<button type="submit" id="btnid" onclick="btnclick();">Submit</button>
JavaScript
function btnclick() {
var arr = [];
$("ul.nav").find("li").each(function () {
arr.push($(this).html()) //I don't know what you want, I am assuming the Html
})
alert(arr);
}