https://www.casinositeguide.com/js/viewimageresize.js

1(function($) {
2    $.fn.viewimageresize = function(selector)
3    {
4        var cfg = {
5                selector: "img"
6            };
7
8        if(typeof selector == "object") {
9            cfg = $.extend(cfg, selector);
10        } else {
11            if(selector) {
12                cfg = $.extend({ selector: selector });
13            }
14        }
15
16        var $img = this.find(cfg.selector);
17        var $this = this;
18
19        $img.removeAttr("height")
20            .css("height", "");
21
22        function image_resize()
23        {
24            var width = $this.width();
25
26            $img.each(function() {
27                if($(this).data("width") == undefined)
28                    $(this).data("width", $(this).width());
29
30                if($(this).data("width") > width) {
31                    $(this).removeAttr("width")
32                           .removeAttr("height")
33                           .css("width","")
34                           .css("height", "");
35
36                    if($(this).data("width") > width) {
37                        $(this).css("width", "100%");
38                    }
39                } else {
40                    $(this).attr("width", $(this).data("width"));
41                }
42            });
43        }
44
45        $(window).on("load", function() {
46            image_resize();
47        });
48
49        $(window).on("resize", function() {
50            image_resize();
51        });
52    }
53
54    $.fn.viewimageresize2 = function(selector)
55    {
56        var cfg = {
57                selector: "img"
58            };
59
60        if(typeof selector == "object") {
61            cfg = $.extend(cfg, selector);
62        } else {
63            if(selector) {
64                cfg = $.extend({ selector: selector });
65            }
66        }
67
68        var $img = this.find(cfg.selector);
69        var $this = this;
70
71        function image_resize()
72        {
73            var width = $this.width();
74
75            $img.each(function() {
76                $(this).removeAttr("width")
77                       .removeAttr("height")
78                       .css("width","")
79                       .css("height", "");
80
81                if($(this).data("width") == undefined)
82                    $(this).data("width", $(this).width());
83
84                if($(this).data("width") > width) {
85                    $(this).css("width", "100%");
86                }
87            });
88        }
89
90        $(window).on("resize", function() {
91            image_resize();
92        });
93
94        image_resize();
95    }
96}(jQuery));