JSFiddle - React, Tailwind, and code Playground
HTML
<span id="myspan">aa</span>
<input id="btn" type="button" value="click">
JavaScript
function loadSpan()
{
var _html = "<a class=\"addItem\">test</a>";
$('#myspan').html(_html);
}
$(function(){
$('#btn').click(function(){
loadSpan();
});
$('.addItem').click(function(){
alert("OK");
});
})