I built a counter to count up to a target number. All the four counter are counting at the same time. Is there any possibility that (from left to right) that the first counter counts, when it is finished then the second counter counts etc., respectively not all at the same time? Here is my code:
(function($) {
$.fn.countTo = function(options) {
options = options || {};
return $(this).each(function() {
// set options for current element
var settings = $.extend({}, $.fn.countTo.defaults, {
from: $(this).data('from'),
to: $(this).data('to'),
speed: $(this).data('speed'),
refreshInterval: $(this).data('refresh-interval'),
decimals: $(this).data('decimals')
}, options);
// how many times to update the value, and how much to increment the value on each update
var loops = Math.ceil(settings.speed / settings.refreshInterval),
increment = (settings.to - settings.from) / loops;
// references & variables that will change with each update
var self = this,
$self = $(this),
loopCount = 0,
value = settings.from,
data = $self.data('countTo') || {};
$self.data('countTo', data);
// if an existing interval can be found, clear it first
if (data.interval) {
clearInterval(data.interval);
}
data.interval = setInterval(updateTimer, settings.refreshInterval);
// initialize the element with the starting value
render(value);
function updateTimer() {
value += increment;
loopCount++;
render(value);
if (typeof(settings.onUpdate) == 'function') {
settings.onUpdate.call(self, value);
}
if (loopCount >= loops) {
// remove the interval
$self.removeData('countTo');
clearInterval(data.interval);
value = settings.to;
if (typeof(settings.onComplete) == 'function') {
settings.onComplete.call(self, value);
}
}
}
function render(value) {
var formattedValue = settings.formatter.call(self, value, settings);
$self.html(formattedValue);
}
});
};
$.fn.countTo.defaults = {
from: 0, // the number the element should start at
to: 0, // the number the element should end at
speed: 1000, // how long it should take to count between the target numbers
refreshInterval: 100, // how often the element should be updated
decimals: 0, // the number of decimal places to show
formatter: formatter, // handler for formatting the value before rendering
onUpdate: null, // callback method for every time the element is updated
onComplete: null // callback method for when the element finishes updating
};
function formatter(value, settings) {
return value.toFixed(settings.decimals);
}
}(jQuery));
jQuery(function($) {
// custom formatting example
$('.count-number').data('countToOptions', {
formatter: function(value, options) {
return value.toFixed(options.decimals).replace(/\B(?=(?:\d{3})+(?!\d))/g, ',');
}
});
// start all the timers
$('.timer').each(count);
function count(options) {
var $this = $(this);
options = $.extend({}, options || {}, $this.data('countToOptions') || {});
$this.countTo(options);
}
});.counter {
background-color: #f5f5f5;
padding: 20px 0;
border-radius: 5px;
}
.count-title {
font-size: 40px;
font-weight: normal;
margin-top: 10px;
margin-bottom: 0;
text-align: center;
}
.count-text {
font-size: 13px;
font-weight: normal;
margin-top: 10px;
margin-bottom: 0;
text-align: center;
}
.fa-2x {
margin: 0 auto;
float: none;
display: table;
color: #4ad1e5;
}<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css">
<div class="container">
<div class="row">
<br/>
<div class="col text-center">
<h2>Bootstrap 4 counter</h2>
<p>counter to count up to a target number</p>
</div>
</div>
<div class="row text-center">
<div class="col">
<div class="counter">
<i class="fa fa-code fa-2x"></i>
<h2 class="timer count-title count-number" data-to="100" data-speed="1500"></h2>
<p class="count-text ">Our Customer</p>
</div>
</div>
<div class="col">
<div class="counter">
<i class="fa fa-coffee fa-2x"></i>
<h2 class="timer count-title count-number" data-to="1700" data-speed="1500"></h2>
<p class="count-text ">Happy Clients</p>
</div>
</div>
<div class="col">
<div class="counter">
<i class="fa fa-lightbulb-o fa-2x"></i>
<h2 class="timer count-title count-number" data-to="11900" data-speed="1500"></h2>
<p class="count-text ">Project Complete</p>
</div>
</div>
<div class="col">
<div class="counter">
<i class="fa fa-bug fa-2x"></i>
<h2 class="timer count-title count-number" data-to="157" data-speed="1500"></h2>
<p class="count-text ">Coffee With Clients</p>
</div>
</div>
</div>
</div>Thank you for any help
Using recursion seems easier than trying to await one to finish etc. I did replace your jquery .each with a vanilla querySelector because that gives back the first element matching the id.
(function ($) {
$.fn.countTo = function (options) {
options = options || {};
$(this).each(function () {
// set options for current element
var settings = $.extend({}, $.fn.countTo.defaults, {
from: $(this).data('from'),
to: $(this).data('to'),
speed: $(this).data('speed'),
refreshInterval: $(this).data('refresh-interval'),
decimals: $(this).data('decimals')
}, options);
// how many times to update the value, and how much to increment the value on each update
var loops = Math.ceil(settings.speed / settings.refreshInterval),
increment = (settings.to - settings.from) / loops;
// references & variables that will change with each update
var self = this,
$self = $(this),
loopCount = 0,
value = settings.from,
data = $self.data('countTo') || {};
$self.data('countTo', data);
// if an existing interval can be found, clear it first
if (data.interval) {
clearInterval(data.interval);
}
data.interval = setInterval(updateTimer, settings.refreshInterval);
// initialize the element with the starting value
render(value);
function updateTimer() {
value += increment;
loopCount++;
render(value);
if (typeof(settings.onUpdate) == 'function') {
settings.onUpdate.call(self, value);
}
if (loopCount >= loops) {
// remove the interval
$self.removeData('countTo');
clearInterval(data.interval);
value = settings.to;
if (typeof(settings.onComplete) == 'function') {
settings.onComplete.call(self, value);
}
//Introduce recursion here
const el = document.querySelector('.timer');
el && count(el);
}
}
function render(value) {
var formattedValue = settings.formatter.call(self, value, settings);
$self.html(formattedValue);
}
});
};
$.fn.countTo.defaults = {
from: 0, // the number the element should start at
to: 0, // the number the element should end at
speed: 1000, // how long it should take to count between the target numbers
refreshInterval: 100, // how often the element should be updated
decimals: 0, // the number of decimal places to show
formatter: formatter, // handler for formatting the value before rendering
onUpdate: null, // callback method for every time the element is updated
onComplete: null // callback method for when the element finishes updating
};
function formatter(value, settings) {
return value.toFixed(settings.decimals);
}
}(jQuery));
jQuery(function ($) {
// custom formatting example
$('.count-number').data('countToOptions', {
formatter: function (value, options) {
return value.toFixed(options.decimals).replace(/\B(?=(?:\d{3})+(?!\d))/g, ',');
}
});
// start all the timers
//$('.timer').each(data.collection.slice(1),count);
});
//instead of the for loop above kick it off by calling count once. then rely on recursion
count(document.querySelector('.timer'));
function count(el) {
var $this = $(el);
el.classList.remove('timer');
options = $.extend({}, $this.data('countToOptions') || {});
$this.countTo(options);
}.counter {
background-color:#f5f5f5;
padding: 20px 0;
border-radius: 5px;
}
.count-title {
font-size: 40px;
font-weight: normal;
margin-top: 10px;
margin-bottom: 0;
text-align: center;
}
.count-text {
font-size: 13px;
font-weight: normal;
margin-top: 10px;
margin-bottom: 0;
text-align: center;
}
.fa-2x {
margin: 0 auto;
float: none;
display: table;
color: #4ad1e5;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.min.css">
<div class="container">
<div class="row">
<br/>
<div class="col text-center">
<h2>Bootstrap 4 counter</h2>
<p>counter to count up to a target number</p>
</div>
</div>
<div class="row text-center">
<div class="col">
<div class="counter">
<i class="fa fa-code fa-2x"></i>
<h2 class="timer count-title count-number" data-to="100" data-speed="1500"></h2>
<p class="count-text ">Our Customer</p>
</div>
</div>
<div class="col">
<div class="counter">
<i class="fa fa-coffee fa-2x"></i>
<h2 class="timer count-title count-number" data-to="1700" data-speed="1500"></h2>
<p class="count-text ">Happy Clients</p>
</div>
</div>
<div class="col">
<div class="counter">
<i class="fa fa-lightbulb-o fa-2x"></i>
<h2 class="timer count-title count-number" data-to="11900" data-speed="1500"></h2>
<p class="count-text ">Project Complete</p>
</div></div>
<div class="col">
<div class="counter">
<i class="fa fa-bug fa-2x"></i>
<h2 class="timer count-title count-number" data-to="157" data-speed="1500"></h2>
<p class="count-text ">Coffee With Clients</p>
</div>
</div>
</div>
</div>