JSFiddle - React, Tailwind, and code Playground

by Gaspar

HTML

<p><br><br><br><br><br></p>
<span id="stim_id">STIMULUS</span>

JavaScript

var r_start;

function shown() {
    r_start = performance.now();
}

function item_display() {
    var before = performance.now();
    $("#stim_id").show(complete = shown())
    var after = performance.now();
    var text = "before: " + before + "<br>callback RT: " + r_start + "<br>after: " + after + "<br>before vs. callback: " + (r_start - before) + "<br>before vs. after: " + (after - r_start)
    console.log("")
    console.log(text)
    $("p").html(text);
	setTimeout(function(){ $("#stim_id").hide(); }, 500);
}
setInterval(item_display, Math.floor(Math.random() * (1000 - 500 + 1)) + 800);