西瓜皮儿

动画特效

2021/12/28

# 霓虹灯按钮


















































 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

































































































































































<body>
    <button class="btn">
        <span class="span1">&nbsp;</span>
        <span class="span2">&nbsp;</span>
        <span class="span3">&nbsp;</span>
        <span class="span4">&nbsp;</span>
        我是按钮
    </button>
    <button class="btn2">
        <span class="span1">&nbsp;</span>
        <span class="span2">&nbsp;</span>
        <span class="span3">&nbsp;</span>
        <span class="span4">&nbsp;</span>
        我是按钮
    </button>
    <button class="btn3">
        <span class="span1">&nbsp;</span>
        <span class="span2">&nbsp;</span>
        <span class="span3">&nbsp;</span>
        <span class="span4">&nbsp;</span>
        我是按钮
    </button>

    <style>
        body {
            background-color: black;
            padding: 50px;
        }
        button {
            margin-right: 20px;
        }
        .btn {
            position: relative;
            width: 100px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            color: rgb(219, 245, 181);
            background-color: transparent;
            outline: none;
            border: 0;
            box-shadow: rgb(145, 165, 114) 0px 0px 1px;
            overflow: hidden;
        }
        .btn:hover {
            background-color: #00ff0d;
            color: rgb(56, 83, 15);
            box-shadow: #00ff0d 0 0 10px;
        }
        .btn>span {
            display: block;
            position: absolute;
        }
        .btn>.span1 {
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to right, transparent, #00ff0d);
            animation: move1 800ms 0s linear infinite forwards; 
        }
        @keyframes move1 {
            0% {
                left: -100%;
                top: 0;
            }
            100% {
                left: 200%;
            }
        }
        .btn>.span2 {
            top: -100%;
            right: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to bottom, transparent, #00ff0d);
            animation: move2 800ms 200ms linear infinite forwards; 
        }
        @keyframes move2 {
            0% {
                top: -100%;
                right: 0%;
            }
            100% {
                top: 200%;
            }
        }
        .btn>.span3 {
            right: -100%;
            bottom: 0%;
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to left, transparent, #00ff0d);
            animation: move3 800ms 400ms linear infinite forwards; 
        }
        @keyframes move3 {
            0% {
                right: -100%;
                bottom: 0%;
            }
            100% {
                right: 200%;
            }
        }
        .btn>.span4 {
            bottom: -100%;
            left: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to top, transparent, #00ff0d);
            animation: move4 800ms 600ms linear infinite forwards; 
        }
        @keyframes move4 {
            0% {
                bottom: -100%;
                left: 0%;
            }
            100% {
                bottom: 200%;
            }
        }

        /* 后面就是重复按钮 */
        .btn2 {
            position: relative;
            width: 100px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            color: rgb(245, 181, 234);
            background-color: transparent;
            outline: none;
            border: 0;
            box-shadow: rgb(245, 181, 234) 0px 0px 1px;
            overflow: hidden;
        }
        .btn2:hover {
            background-color: #ff00ff;
            color: rgb(83, 15, 83);
            box-shadow: #ff00ff 0 0 10px;
        }
        .btn2>span {
            display: block;
            position: absolute;
        }
        .btn2>.span1 {
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to right, transparent, #ff00ff);
            animation: move1 800ms 0s linear infinite forwards; 
        }
        .btn2>.span2 {
            top: -100%;
            right: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to bottom, transparent, #ff00ff);
            animation: move2 800ms 200ms linear infinite forwards; 
        }
        .btn2>.span3 {
            right: -100%;
            bottom: 0%;
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to left, transparent, #ff00ff);
            animation: move3 800ms 400ms linear infinite forwards; 
        }
        .btn2>.span4 {
            bottom: -100%;
            left: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to top, transparent, #ff00ff);
            animation: move4 800ms 600ms linear infinite forwards; 
        }
        /* 按钮3 */
        .btn3 {
            position: relative;
            width: 100px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            color: rgb(181, 230, 245);
            background-color: transparent;
            outline: none;
            border: 0;
            box-shadow: rgb(181, 230, 245) 0px 0px 1px;
            overflow: hidden;
        }
        .btn3:hover {
            background-color: #00ffff;
            color: rgb(15, 81, 83);
            box-shadow: #00ffff 0 0 10px;
        }
        .btn3>span {
            display: block;
            position: absolute;
        }
        .btn3>.span1 {
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to right, transparent, #00ffff);
            animation: move1 800ms 0s linear infinite forwards; 
        }
        .btn3>.span2 {
            top: -100%;
            right: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to bottom, transparent, #00ffff);
            animation: move2 800ms 200ms linear infinite forwards; 
        }
        .btn3>.span3 {
            right: -100%;
            bottom: 0%;
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to left, transparent, #00ffff);
            animation: move3 800ms 400ms linear infinite forwards; 
        }
        .btn3>.span4 {
            bottom: -100%;
            left: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to top, transparent, #00ffff);
            animation: move4 800ms 600ms linear infinite forwards; 
        }
    </style>
</body>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228

# 追赶霓虹灯代码

  • 实际上是通过不同的时间间隔配合渐变条产生的视觉残影制作的

























































 
















 
















 
















 
























































































































<body>
    <button class="btn">
        <span class="span1">&nbsp;</span>
        <span class="span2">&nbsp;</span>
        <span class="span3">&nbsp;</span>
        <span class="span4">&nbsp;</span>
        我是按钮
    </button>
    <button class="btn2">
        <span class="span1">&nbsp;</span>
        <span class="span2">&nbsp;</span>
        <span class="span3">&nbsp;</span>
        <span class="span4">&nbsp;</span>
        我是按钮
    </button>
    <button class="btn3">
        <span class="span1">&nbsp;</span>
        <span class="span2">&nbsp;</span>
        <span class="span3">&nbsp;</span>
        <span class="span4">&nbsp;</span>
        我是按钮
    </button>

    <style>
        body {
            background-color: black;
            padding: 50px;
        }
        button {
            margin-right: 20px;
        }
        .btn {
            position: relative;
            width: 100px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            color: rgb(219, 245, 181);
            background-color: transparent;
            outline: none;
            border: 0;
            box-shadow: rgb(145, 165, 114) 0px 0px 1px;
            overflow: hidden;
        }
        .btn:hover {
            background-color: #00ff0d;
            color: rgb(56, 83, 15);
            box-shadow: #00ff0d 0 0 10px;
        }
        .btn>span {
            display: block;
            position: absolute;
        }
        .btn>.span1 {
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to right, transparent, #00ff0d);
            animation: move1 800ms 0s linear infinite forwards; 
        }
        @keyframes move1 {
            0% {
                left: -100%;
                top: 0;
            }
            100% {
                left: 200%;
            }
        }
        .btn>.span2 {
            top: -100%;
            right: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to bottom, transparent, #00ff0d);
            animation: move2 800ms 400ms linear infinite forwards; 
        }
        @keyframes move2 {
            0% {
                top: -100%;
                right: 0%;
            }
            100% {
                top: 200%;
            }
        }
        .btn>.span3 {
            right: -100%;
            bottom: 0%;
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to left, transparent, #00ff0d);
            animation: move3 800ms 800ms linear infinite forwards; 
        }
        @keyframes move3 {
            0% {
                right: -100%;
                bottom: 0%;
            }
            100% {
                right: 200%;
            }
        }
        .btn>.span4 {
            bottom: -100%;
            left: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to top, transparent, #00ff0d);
            animation: move4 800ms 1200ms linear infinite forwards; 
        }
        @keyframes move4 {
            0% {
                bottom: -100%;
                left: 0%;
            }
            100% {
                bottom: 200%;
            }
        }

        /* 后面就是重复按钮 */
        .btn2 {
            position: relative;
            width: 100px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            color: rgb(245, 181, 234);
            background-color: transparent;
            outline: none;
            border: 0;
            box-shadow: rgb(245, 181, 234) 0px 0px 1px;
            overflow: hidden;
        }
        .btn2:hover {
            background-color: #ff00ff;
            color: rgb(83, 15, 83);
            box-shadow: #ff00ff 0 0 10px;
        }
        .btn2>span {
            display: block;
            position: absolute;
        }
        .btn2>.span1 {
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to right, transparent, #ff00ff);
            animation: move1 800ms 0s linear infinite forwards; 
        }
        .btn2>.span2 {
            top: -100%;
            right: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to bottom, transparent, #ff00ff);
            animation: move2 800ms 400ms linear infinite forwards; 
        }
        .btn2>.span3 {
            right: -100%;
            bottom: 0%;
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to left, transparent, #ff00ff);
            animation: move3 800ms 800ms linear infinite forwards; 
        }
        .btn2>.span4 {
            bottom: -100%;
            left: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to top, transparent, #ff00ff);
            animation: move4 800ms 1200ms linear infinite forwards; 
        }
        /* 按钮3 */
        .btn3 {
            position: relative;
            width: 100px;
            height: 50px;
            line-height: 50px;
            text-align: center;
            color: rgb(181, 230, 245);
            background-color: transparent;
            outline: none;
            border: 0;
            box-shadow: rgb(181, 230, 245) 0px 0px 1px;
            overflow: hidden;
        }
        .btn3:hover {
            background-color: #00ffff;
            color: rgb(15, 81, 83);
            box-shadow: #00ffff 0 0 10px;
        }
        .btn3>span {
            display: block;
            position: absolute;
        }
        .btn3>.span1 {
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to right, transparent, #00ffff);
            animation: move1 800ms 0s linear infinite forwards; 
        }
        .btn3>.span2 {
            top: -100%;
            right: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to bottom, transparent, #00ffff);
            animation: move2 800ms 400ms linear infinite forwards; 
        }
        .btn3>.span3 {
            right: -100%;
            bottom: 0%;
            line-height: 1px;
            width: 100px;
            background: linear-gradient(to left, transparent, #00ffff);
            animation: move3 800ms 800ms linear infinite forwards; 
        }
        .btn3>.span4 {
            bottom: -100%;
            left: 0%;
            line-height: 50px;
            width: 1px;
            background: linear-gradient(to top, transparent, #00ffff);
            animation: move4 800ms 1200ms linear infinite forwards; 
        }
    </style>
</body>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228

# 简易loading动画

  • 来自【阿阳热爱前端】
  • css动画技术
    1. css设置变量
    2. transform动画
    3. animation动画





























































































 
 
 
 













































 


















































<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>HTML+CSS 简易Loading动画</title>
    <link rel="stylesheet" href="./index.css" />
</head>

<body>
    <div class="container">
        <div class="sun">
            <div class="sun-body">
                <div class="line" style="--i: 1"></div>
                <div class="line" style="--i: 2"></div>
                <div class="line" style="--i: 3"></div>
                <div class="line" style="--i: 4"></div>
                <div class="line" style="--i: 5"></div>
                <div class="line" style="--i: 6"></div>
                <div class="line" style="--i: 7"></div>
                <div class="line" style="--i: 8"></div>
            </div>
            <div class="eye"></div>
        </div>
        <div class="horizon"></div>
    </div>
    <style>
        /* 定义全局的变量 */
        :root {
            --light-color: #f4c042;
            --dark-color: #7a5600;
        }

        /* 将所有元素以及它的伪元素的内外边距清除,并且改变盒子模型的计算方法 */
        *,
        *::before,
        *::after {
            padding: 0;
            margin: 0;
            box-sizing: border-box;
        }

        body {
            /* 弹性布局 让页面元素垂直+水平居中 */
            display: flex;
            justify-content: center;
            align-items: center;
            /* 让页面占浏览器可视区域的高度 */
            height: 100vh;
            background-color: var(--light-color);
        }

        .container {
            /* 相对定位 */
            position: relative;
            width: 300px;
            height: 300px;
        }

        /* 太阳 start */
        .container .sun {
            /* 绝对定位 */
            position: absolute;
            top: 135px;
            /* 这里是自动计算 也可以自己手动计算出82px */
            left: calc(50% - 136px / 2);
            width: 136px;
            height: 136px;
            animation: sun 2.7s linear infinite;
        }
        /* 圆圈 start */
        .container .sun .sun-body {
            position: absolute;
            top: 18px;
            left: 18px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            border: 6px solid var(--dark-color);
            animation: sun-body 2.7s linear infinite;
        }
        /* 圆圈 end */
        /* 外层光线 start */
        .container .sun .sun-body .line {
            position: absolute;
            top: -24px;
            left: calc(50% - 3px);
            width: 6px;
            height: 12px;
            border-radius: 6px;
            background-color: var(--dark-color);
            /* 我们写了8个类名为line的元素 并设置变量--i 可以通过自定计算旋转角度 */
            transform: rotate(calc(var(--i) * 45deg));
            /* 在设置旋转角度为圆圈中心 */
            transform-origin: center 68px;
        }
        /* 外层光线 end */
        /* 眼睛 start */
        .container .sun .eye {
            position: absolute;
            top: 60px;
            left: 40px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--dark-color);
            /* 用阴影复制一对眼睛 */
            box-shadow: 16px 0 var(--dark-color);
            animation: eye 2.7s linear infinite;
        }
        /* 眼睛 end */
        /* 太阳 end */

        /* 地平线 start */
        .container .horizon {
            position: absolute;
            bottom: 0;
            width: 100%;
            height: 115px;
            background-color: var(--light-color);
        }
        .container .horizon::before {
            content: "";
            position: absolute;
            left: 5%;
            width: 90%;
            height: 6px;
            border-radius: 6px;
            background-color: var(--dark-color);
        }
        /* 地平线 end */
        /* loading 字样 start */
        .container .horizon::after {
            content: "Loading...";
            position: absolute;
            top: 30px;
            width: 100%;
            text-align: center;
            font-size: 25px;
            color: var(--dark-color);
            animation: loading 2.7s linear infinite;
        }
        /* loading 字样 end*/

        @keyframes sun {
            10% {
                transform: translate(0);
            }
            40%,
            70% {
                transform: translateY(-40px);
            }
        }

        @keyframes sun-body {
            40% {
                transform: rotate(0);
            }
            50%,
            100% {
                transform: rotate(45deg);
            }
        }

        @keyframes eye {
            50%,
            60% {
                transform: scale(1);
            }
            55% {
                transform: scaleY(0.1);
            }
            70%,
            100% {
                transform: translateX(34px);
            }
        }

        @keyframes loading {
            40% {
                opacity: 1;
            }
            60% {
                opacity: 0;
            }
        }
    </style>
</body>

</html>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192

# 手写轮播图

<body>
    <div class="swiper-container">
        <div class="swiper">
            <div class="swiper-item">
                <img src="http://p1.music.126.net/Hw0XfBDOKAq6zky6-FfNmQ==/109951167524024227.jpg?imageView&quality=89" class="swiper-img">
            </div>
            <div class="swiper-item">
                <img src="http://p1.music.126.net/GlneKk-0iSdP7Ug9tHtA1w==/109951167524304592.jpg?imageView&quality=89" class="swiper-img">
            </div>
            <div class="swiper-item">
                <img src="http://p1.music.126.net/9HzGGuuftmIPYeSe0IEBcA==/109951167524071252.jpg?imageView&quality=89" class="swiper-img">
            </div>
            <div class="swiper-item">
                <img src="http://p1.music.126.net/wKGNJ7gaazIfkfI3uYPiIA==/109951167524045404.jpg?imageView&quality=89" class="swiper-img">
            </div>
            <div class="swiper-item">
                <img src="http://p1.music.126.net/iFc1gO43OsSk2njkHWZYbA==/109951167524364228.jpg?imageView&quality=89" class="swiper-img">
            </div>
        </div>
        <span class="prev">《GO</span>
        <span class="next">GO》</span>
    </div>
    <style>
        * {
            padding: 0;
            margin: 0;
        }
        /* 隐藏scroll-bar */
        .swiper-container::-webkit-scrollbar {
            display: none;
        }

        .swiper-container {
            position: relative;
            width: 100%;
            overflow: hidden;
        }
        .swiper {
            display: flex;
            position: relative;
            transition: all .5s 0s ease-in-out;
        }
        .swiper-item {
            flex-shrink: 0;
            width: 100%;
            text-align: center;
            justify-content: space-between;
            overflow: hidden;
        }
        .swiper-img {
            width: 100vw;
            height: auto;
        }
        .prev,.next {
            position: absolute;
            background-color: rgba(232, 232, 232, 0.3);
            box-shadow: 0 0 3px #333;
            width: 3em;
            height: 1.2em;
            line-height: 1.2em;
            border-radius: .75em;
            top: 50%;
            transform: translate(0, -50%);
            user-select: none;
        }
        .prev {
            left: 3%;
            text-align: left;
        }
        .next {
            position: absolute;
            right: 3%;
            text-align: right;
        }
    </style>
    <script>
        const prev = document.querySelector(".prev");
        const next = document.querySelector(".next");
        const swiperItem = document.querySelector(".swiper-item");
        let swiper = document.querySelector(".swiper");
        let itemNum = swiper.querySelectorAll(".swiper-item").length;
        let swiperRect = swiper.getClientRects()[0];
        let swiperItemRect = swiperItem.getClientRects()[0];
        let itemWidth = parseInt(swiperItemRect.width);
        let moving = false;

        // 设计模式：代理模式
        // 利用proxy管理当前展示的 index，劫持后做DOM操作
        let showIdxProxy = new Proxy({ i: 0 }, {
            set(target, p, val) {
                if (val < 0) {
                    val = itemNum - 1;
                    swiper.style.left = `-${(itemNum - 1) * itemWidth}px`;
                } else if (val >= itemNum) {
                    val = 0;
                    swiper.style.left = "0px";
                } else {
                    swiper.style.left = `-${Math.abs(val * itemWidth)}px`;
                }
                Reflect.set(target, p, val);
                return true;
            }
        });

        window.addEventListener("resize", (() => {
            let timer;
            return () => {
                if (timer) return;
                timer = setTimeout(() => {
                    swiper = document.querySelector(".swiper");
                    itemNum = swiper.querySelectorAll(".swiper-item").length;
                    swiperItemRect = swiperItem.getClientRects()[0];
                    itemWidth = parseInt(swiperItemRect.width);
                }, 20)
            }
        })())

        prev.addEventListener("click", () => {
            if (moving) return;
            moving = true;
            setTimeout(() => moving = false, 500);
            showIdxProxy.i = showIdxProxy.i <= 0 ? itemNum - 1 : showIdxProxy.i - 1;

        })
        next.addEventListener("click", () => {
            if (moving) return;
            moving = true;
            setTimeout(() => moving = false, 500);
            showIdxProxy.i = showIdxProxy.i >= itemNum - 1 ? 0 : showIdxProxy.i + 1;
        });
    </script>
</body>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
上次更新: 11/1/2024

svg概览