JSFiddle - React, Tailwind, and code Playground

HTML

<p>Click the button to remove a substring in the paragraph below:</p>

<p id="demo">jquery12325365345423545423this string starts with a code</p>

<button onclick="myFunction()">Try it</button>

<script>
var alreadyDone = false;
function myFunction()
{
    if(!alreadyDone)
    {
        alreadyDone=true;
        var str=document.getElementById("demo").innerHTML; 
        var n=str.substring(26);
        document.getElementById("demo").innerHTML=n;
    }
}
</script>