https://www.pumacy.de/wp-content/plugins/pricing-table-by-supsystic/js/responsiveText.js?ver=1.9.16

1(function( $ ){
2
3  $.fn.responsiveText = function( options ) {
4
5    // Setup options
6    var settings = $.extend({
7          'minFontSize' : Number.NEGATIVE_INFINITY,
8          'maxFontSize' : Number.POSITIVE_INFINITY
9        }, options);
10
11    return this.each(function(){
12
13      // Store the object
14      var $this = $(this),
15          text = $this.get(0);
16
17      if (!text) return;
18
19      $this.data('original-font-size', parseFloat(
20        window.getComputedStyle(text).fontSize
21      ), 10);
22
23      // Resizer() resizes items based on the object width divided by the compressor * 10
24      var resizer = function () {
25        var ratio = null,
26            originalWidth = window.screen.availWidth,
27            currentWidth = window.innerWidth,
28            size = $this.data('original-font-size');
29
30        if (originalWidth == currentWidth || !size) return;
31
32        if (currentWidth != originalWidth)
33          ratio = originalWidth / currentWidth;
34
35        if (currentWidth > originalWidth)
36          size *= ratio;
37        else
38          size /= ratio;
39
40        size = Math.max(
41          Math.min(
42            size, 
43            settings.maxFontSize
44          ), 
45          settings.minFontSize
46        );
47
48        $this.css('font-size', size + 'px');
49      };
50
51      resizer();
52
53      // Call on resize. Opera debounces their resize by default.
54      $(window).on('resize.responsiveText orientationchange.responsiveText', resizer);
55
56    });
57
58  };
59
60})( jQuery );