JSFiddle - React, Tailwind, and code Playground
by Qwerty_Wasd
HTML
<div id="test" onclick="myFunc(this)">
<span class="span">sdsd</span>
</div>
JavaScript
function myFunc(e){
}
/////////////////////////////////
window.onclick = function(e){
if (e.target.classList.contains('span')){
console.log('its span')
//отменить алерт mainFunc
}
}