Loop over array but with a time delay
<p>I am trying to loop over an array. However, I would like to add a 15 second delay between each array value. This will write value 1 to console, then count down 15 seconds and write value 2 to console, and so on. </p>

<p>I'm not sure exactly how to do this. My code as of now just outputs the numbers 15 all the way to 1 on the console at once with no actual count down and no array values.</p>

<p>array</p>

<pre><code>["l3", "l4", "l5", "l6", "l7", "l8", "l9", "l10", "l11", "l12", "l13", "l14", "l15", "l16"] 
</code></pre>

<p>code</p>

<pre><code>var adArray = [];
// get links with class adfu
var adfuClass = document.getElementsByClassName('adfu');
for (var i = 0; i &lt; adfuClass.length; i++) {
    var ids = adfuClass[i].id
    var newIds = ids.replace(/tg_/i, "l");
    adArray.push(newIds);
}
// get links with class ad30
var ad30Class = document.getElementsByClassName('ad30');
for (var i = 0; i &lt; ad30Class.length; i++) {
    var ids = ad30Class[i].id;
     var newIds = ids.replace(/tg_/i, "l");
     adArray.push(newIds);
}
// get links with class adf
var adfClass = document.getElementsByClassName('adf');
for (var i = 0; i &lt; adfClass.length; i++) {
    var ids = adfClass[i].id;
     var newIds = ids.replace(/tg_/i, "l");
     adArray.push(newIds);
}
// loop through array with all new ids
for (var i = 0, l = adArray.length; i &lt; l; i++) {
    var counter = 15;
    var countDown = setTimeout(function() {
        console.log(counter);
        if (counter == 0) {
            console.log(adArray[i]);
        }
        counter--;
    }, 1000);
}
</code></pre>
