JSFiddle - React, Tailwind, and code Playground

HTML

<script src=https://code.jquery.com/jquery-1.5.min.js></script>

JavaScript

/* One-time setup (run once before other code)
     *   adds onreadystatechange to $.ajax options
     *   from https://gist.github.com/chrishow/3023092)
     *   success etc will still fire if provided
     */
    $.ajaxPrefilter(function( options, originalOptions, jqXHR ) {
        if ( options.onreadystatechange ) {
            var xhrFactory = options.xhr;
            options.xhr = function() {
                var xhr = xhrFactory.apply( this, arguments );
                function handler() {
                    options.onreadystatechange( xhr, jqXHR );
                }
                if ( xhr.addEventListener ) {
                    xhr.addEventListener( "readystatechange", handler, false );
                } else {
                    setTimeout( function() {
                        var internal = xhr.onreadystatechange;
                        if ( internal ) {
                            xhr.onreadystatechange = function() {
                                handler();
                                internal.apply( this, arguments ); 
                            };
                        }
                    }, 0 );
                }
                return xhr;
            };
        }
    });

    // ----- myReadyStateChange(): this will do my incremental processing -----
    var last_start = 0; // using global var for over-simplified example
    function myReadyStateChange(xhr /*, jqxhr */) {
        if(xhr.readyState >= 3 && xhr.responseText.length > last_start) {
        	var chunk = xhr.responseText.slice(last_start);
            alert('Got chunk: ' + chunk);
            console.log('Got chunk: ', chunk);
            last_start += chunk.length;
        }
    }

    // ----- call my url and process response incrementally -----
    last_start = 0;
    $.ajax({
      url: "https://code.jquery.com/jquery-1.5.js", // whatever your target url is goes here
      onreadystatechange: myReadyStateChange
    });