JSFiddle - React, Tailwind, and code Playground

JavaScript

var funfacts= ['URL1','URL2','URL3'];
var multimedia= ['URL4','URL5'];
var employees = ['URL6','URL7','URL8','URL9','URL10'];
var information = ['URL11','URL12','URL13'];

var pages = [funfacts, multimedia, employees, information];
var timeout=1000;
var t=0;
for(i=0;i<pages.length;i++)
{
    (function(value){
        for(j=0;j<pages[value].length;j++)
        {
            t++;
            (function(iv, ij){
                var tmo = timeout*t;
                setTimeout(function(){
                    callAjax(iv, ij, tmo);
                }, tmo);

            })(value, j); 
        }
             
    })(i);             
}

function callAjax(i, j, t)
{
    console.log(pages[i][j]+" "+t);
    alert(pages[i][j]+" "+t);
}