run a function inside FOR every 10 seconds

Question

I have this for inside my script:

for(var i = 0, l = eachLine.length; i < l; i++) {
 if(eachLine[i].length>0){
  doP(eachLine[i], +i);
 }
}

the for read lines from a string and call doP function. What happens is it is too fast and cause some speed trouble in my webside depending on text size.

What I want is to call doP function every 10 seconds... in other words, I want for to wait 10 seconds to call doP function again... how can I make it work?

Answer 1

Using setInterval()

var i = 0, len = eachLine.length;
function looper(){
    if(i == 0)
        interval = setInterval(looper, 10000)
    if(eachLine[i].length > 0)
        doP(eachLine[i], ++i);
    if(i >= len) 
        clearInterval(interval);
}
looper();

var eachLine = ["Hi", "there", "I", "am", "lines", "of", "text"];
var i = 0, len = eachLine.length;
function looper(){
    if(i == 0)
        interval = setInterval(looper, 2000)
    if(eachLine[i].length > 0)
        doP(eachLine[i], ++i);
    if(i >= len) 
        clearInterval(interval);
}
looper();

function doP(line, count){
    $('body').append(count + ": " + line + "<br/>");
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>

Using setTimeout()

var i = 0, len = eachLine.length;
function looper(){
    if(eachLine[i].length > 0)
        doP(eachLine[i], ++i);
    if(i < len) 
        setTimeout(looper, 10000);
}
looper();

var eachLine = ["Hi", "there", "I", "am", "lines", "of", "text"];
var i = 0, len = eachLine.length;
function looper(){
    if(eachLine[i].length > 0)
        doP(eachLine[i], ++i);
    if(i < len) 
        setTimeout(looper, 2000);
}
looper();

function doP(line, count){
    $('body').append(count + ": " + line + "<br/>");
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>