https://www.chemicalbook.cn/control/demo.js?v=1.0

1// JavaScript Document
2(function(a) {
3    a.fn.extend({
4        demo:function() {
5            var b = a(this);
6            var p = b.width();
7            var o = b.height();
8            var l = b.css("position");
9            var i = a(window).width();
10            var f = a(window).height();
11            var g = "normal";
12            var c = 706;
13            var k = 405;
14            var d = b.css("center");
15            var n = b.css("center");
16            var e = (i - c) / 2;
17            var h = (f - k - 20) / 2;
18            var j = a("<div>", {
19                id:"zhezhao"
20            });
21            var m = a("<a>", {
22                id:"close",
23                href:"javascript:void(0)",
24                text:"×"
25            });
26            m.bind("click", function() {
27                j.animate({
28                    width:c,
29                    height:k,
30                    right:e,
31                    top:h
32                }, function () {
33                    $(".wenjuan").hide();
34                    j.remove();
35                    m.detach();
36                    b.animate({
37                        width:p,
38                        height:o,
39                        right:d,
40                        top:n
41                    }, g, function() {
42                        b.on("click", function() {
43                            b.animate({
44                                width:c,
45                                height:k,
46                                right:e,
47                                top:h
48                            }, g, function() {
49                                m.appendTo(b);
50                                b.off("click");
51                                j.appendTo("body").css({
52                                    width:c,
53                                    height:k,
54                                    right:e,
55                                    top:h
56                                }).animate({
57                                    width:"100%",
58                                    height:"100%",
59                                    right:0,
60                                    top:0
61                                }, g);
62                            });
63                        });
64                    });
65                });
66            });
67            b.on("click", function() {
68                b.animate({
69                    width:c,
70                    height:k,
71                    right:e,
72                    top:h
73                }, g, function() {
74                    m.appendTo(b);
75                    b.off("click");
76                    j.appendTo("body").css({
77                        width:c,
78                        height:k,
79                        right:e,
80                        top:h
81                    }).animate({
82                        width:"100%",
83                        height:"100%",
84                        right:0,
85                        top:0
86                    }, g);
87                });
88            });
89        }
90    });
91})(jQuery);