JSFiddle - React, Tailwind, and code Playground

HTML

<div id="div_01" class="blinkDivs"></div>
<div id="div_02" class="blinkDivs"></div>
<div id="div_03" class="blinkDivs"></div>

CSS

.blinkDivs {
  background-color: white;
  border: 3px solid black;
  border-radius: 40px;
  height: 50px;
  width: 50px;
  margin-bottom: 1px;
}

.blinkDivs:hover {
  cursor: pointer;
}

JavaScript

var OAHelper = new ObjectArrayHelper();

var taskList = new Array();

$(".blinkDivs").click(function() {
	
    var ElementID = $(this).attr("id");
    console.log(ElementID);
    
    //ElementID is NOT in array
    if (!OAHelper.checkIfObjectExists(taskList, "id", ElementID)) {

        var task = new Task(ElementID);
        var newTask = { id: ElementID, task: task};
        taskList.push(newTask);

		var t = OAHelper.getValue(taskList, "task", "id", ElementID);

		if (t !== false) {
			t.blink();
		}
	}
});



function Task(ElementID)
{
    var self = this;
    self.id = ElementID;
    self.interval = null;
    self.limiter = 0;
    self.toggle = 0;
    self.$jqElement = $("#" + self.id);
	this.blink = function()
	{
        

        self.limiter = 0;
        self.interval = setInterval(function() {

            if (self.toggle == 0) {
                self.$jqElement.css("background-color", "blue");
                self.toggle = 1;
            } else {
                self.$jqElement.css("background-color", "white");
                self.toggle = 0;
            }

            if (self.limiter > 4) {

                OAHelper.deleteObject(taskList, "id", self.id);
                clearInterval(self.interval);
            }
            self.limiter++;
        }, 400);
	}
}



/**
 * This class provides helper functions to do operations on object arrays
 *
 * functions:
 *
 * delete objects,
 * output objects,
 * change value of specific key,
 * check if specific object exists,
 * check if specific object has specific key value pair
 *
 * Autor: Eduard Fekete
 * @constructor
 */
function ObjectArrayHelper()
{
    /**
     * Runs through all objects of an object array and searches for a record with specific identity.
     *
     * Return Values:
     * 		true	if record exists
     * 		false	if record does not exist
     *
     * Autor: Eduard Fekete
     *
     * @param pObjectArray			Array of objects
     * @param pIdentifier			Identifier Key of the object
    ...