JSFiddle - React, Tailwind, and code Playground

HTML

<span>test10</span><a href="#" id=10 onclick="delet(this.id);">delet</a>

JavaScript

function delet(proid){
    alert('something will happen');
    $.post("back.php",{
        proid:proid
    },function(data){
        alert(data);
    });
}