css-examples/modules/overflow.html at main · mdn/css-examples · GitHub

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
<!doctype html>
<html lang="en-us">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width" />
    <title>Overflow</title>
    <style>
      article {
        display: flex;
        gap: 1em;
      }

      label {
        display: block;
        white-space: nowrap;
      }

      pre {
        border: 2px dashed crimson;
        height: 150px;
        width: 20em;
        margin-bottom: 3em;
        overflow-clip-margin: 1em;
        text-align: center;
      }

      .wide {
        width: 40em;
      }

      ::before {
        font-weight: bold;
        color: white;
        background: crimson;
        display: inline-block;
        min-width: 50%;
        padding: 3px 5px;
        box-sizing: border-box;
      }

      .hidden {
        overflow: hidden hidden;
      }
      .hidden::before {
        content: "hidden: ";
      }

      .clip {
        overflow: clip clip;
      }
      .clip::before {
        content: "clip: ";
      }

      .scroll {
        overflow: scroll scroll;
      }
      .scroll::before {
        content: "scroll: ";
      }

      .auto {
        overflow: auto auto;
      }
      .auto::before {
        content: "auto: ";
      }

      .overlay {
        overflow: clip clip;
        overflow: overlay overlay;
      }
      .overlay::before {
        content: "overlay (or clip if not supported): ";
      }

      .visible {
        overflow: visible visible;
      }
      .visible::before {
        content: "visible: ";
      }

      article:not(:has(pre.clip)) > fieldset > label:nth-of-type(2),
      article:not(:has(pre.hidden, pre.scroll, pre.auto, pre.overlay))
        fieldset
        fieldset {
        opacity: 20%;
        pointer-events: none;
      }
    </style>
  </head>
  <body>
    <article>
      <fieldset>
        <legend>Select options:</legend>
        <label
          ><code>overflow</code>:
          <select id="overflowValue">
            <option>hidden</option>
            <option>clip</option>
            <option>scroll</option>
            <option>auto</option>
            <option selected>visible</option>
            <option>overlay</option>
          </select>
        </label>
        <label>
          <code>overflow-clip-margin</code>:
          <input type="number" id="ocm" value="1" min="0" max="10" size="2" />
          <code>em</code>
        </label>
        <label
          ><input type="checkbox" id="wide" /> <code>width</code>:
          <code>20em</code> or <code>40em</code></label
        >
        <fieldset>
          <legend>Scroll programatically:</legend>
          <label
            >ScrollLeft:
            <input type="range" min="0" max="100" value="0" id="scrollL"
          /></label>
          <label
            >ScrollTop:
            <input type="range" min="0" max="100" value="0" id="scrollT"
          /></label>
        </fieldset>
      </fieldset>
      <pre class="visible">&nbsp;
    Oh, Rubber Duckie, you're the one
    You make bath time lots of fun
    Rubber Duckie, I'm awfully fond of you

    Rubber Duckie, joy of joys
    When I squeeze you, you make noise
    Rubber Duckie, you're my very best friend, it's true

    Oh, every day when I make my way to the tubby
    I find a little fella who's cute and yellow and chubby
    Rub-a-dub-dubby

    <a href="#">Rubber Duckie</a>, you're so fine
    And I'm lucky that you're mine
    Rubber Duckie, I'm awfully fond of you
    </pre>
    </article>
    <script>
      const pre = document.querySelector("pre");
      const val = document.getElementById("overflowValue");
      const check = document.getElementById("wide");
      const ocm = document.getElementById("ocm");
      const scrollL = document.getElementById("scrollL");
      const scrollT = document.getElementById("scrollT");

      val.addEventListener("change", () => {
        if (pre.classList.contains("wide")) {
          pre.className = `wide ${val.value}`;
        } else {
          pre.className = `${val.value}`;
        }
        scrollExample();
        clipMargin();
      });

      wide.addEventListener("change", () => {
        pre.classList.toggle("wide");
        scrollExample();
      });

      ocm.addEventListener("change", () => {
        clipMargin();
      });

      scrollL.addEventListener("change", () => {
        scrollExample();
      });
      scrollT.addEventListener("change", () => {
        scrollExample();
      });

      function scrollExample() {
        pre.scrollTo({
          top: scrollT.value,
          left: scrollL.value * 2,
          behavior: "smooth",
        });
      }

      function clipMargin() {
        pre.style.overflowClipMargin = `${ocm.value}em`;
      }
    </script>
  </body>
</html>