javascript - jQuery animated number counter from zero to value

Question

I have created a script to animate a number from zero to it's value.

Working

jQuery

$({ Counter: 0 }).animate({
  Counter: $('.Single').text()
}, {
  duration: 1000,
  easing: 'swing',
  step: function() {
    $('.Single').text(Math.ceil(this.Counter));
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<span class="Single">150</span>

Answer 1

Your thisdoesn't refer to the element in the step callback, instead you want to keep a reference to it at the beginning of your function (wrapped in $thisin my example):

$('.Count').each(function () {
  var $this = $(this);
  jQuery({ Counter: 0 }).animate({ Counter: $this.text() }, {
    duration: 1000,
    easing: 'swing',
    step: function () {
      $this.text(Math.ceil(this.Counter));
    }
  });
});

Update: If you want to display decimal numbers, then instead of rounding the value with Math.ceil you can round up to 2 decimals for instance with value.toFixed(2):

step: function () {
  $this.text(this.Counter.toFixed(2));
}