JSFiddle - React, Tailwind, and code Playground

HTML

<b>Number </b>
<input id = "deliveryIdentification" name = "deliveryIdentification" type = "text" size = "16" maxlength = "30">

<!-- Array Area Creation -->
<input type='button' onclick='changeText2()' value='Add' />

<ol id="deliveryIdArray">
</ol>

JavaScript

var list = document.getElementById('deliveryIdArray');
var names = [];

function changeText2() {
    var deliveryIdentification = document.getElementById('deliveryIdentification').value;
    names.push(deliveryIdentification);//simply add new name to array;
    //array changed re-render list
    renderList();
}

function renderList(){
    while (list.firstChild) {
        list.removeChild(list.firstChild);
    }
    //create each li again
    for(var i=0;i<names.length;i++){
        var entry = document.createElement('li');
        entry.appendChild(document.createTextNode(names[i]));
        var removeButton = document.createElement('button');
        removeButton.appendChild(document.createTextNode("remove"));
        removeButton.setAttribute('onClick','removeName('+i+')');
        entry.appendChild(removeButton);
        list.appendChild(entry);
    }
}


function removeName(nameindex){
    names.splice(nameindex,1);
    //array changed re-render list
    renderList();
}

function getDeliveries(){
    return names;
}