JSFiddle - React, Tailwind, and code Playground

HTML

<span id ="myId">data1</span>
<span id ="myId">data2</span>
<span id ="myId">data3</span>
<span id ="myId">data4</span>
<span id ="myId">data5</span>
<span id ="someotherid">aaa</span>

JavaScript

var spans=document.getElementsByTagName("span");
for(var i=0;i<spans.length;i++){
    if(spans[i].id=="myId"){
        spans[i].innerHTML="";
    }
}