JSFiddle - React, Tailwind, and code Playground

HTML

<span id="1" class="name">Content</span>
<span id="2" class="name">Content</span>

<input type="text" id="whispering">

JavaScript

var spans = document.getElementsByClassName("name"),
    b = document.getElementById("whispering");

for(var i = 0; i < spans.length; i++){
    spans[i].onclick = function(){
        this.innerHTML = b.value;
    }
}