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replace ascii trees: dns hierarchy, dom structure

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This commit is contained in:
Michael Czechowski
2026-04-20 11:38:28 +02:00
parent 5d4d167cbd
commit 8ed7796968
6 changed files with 121 additions and 20 deletions
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18
slides/223015c/02-netzwerke-protokolle-css.md
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@@ -810,19 +810,15 @@ SPEAKER NOTES:
# Die DNS-Hierarchie
```
. (Root)
/|\
/ | \
.de .com .org ...
/
hdm-stuttgart
|
www
```
![bg right:45% fit](./assets/demos/dns-tree.png)
**Dezentral:** Niemand kennt alles.
Jede Ebene kennt nur die nächste.
Jede Ebene kennt nur die nächste:
- Root → .de, .com, .org
- .de → alle .de-Domains
- hdm-stuttgart.de → www, mail, …
<!--
SPEAKER NOTES:

10
slides/223015c/03-interaktivitaet-javascript.md
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@@ -491,15 +491,7 @@ Funktionale Programmierung, Original-Array bleibt unverändert
- JavaScript kann diesen Baum **lesen und ändern**
- Jedes HTML-Element = ein "Node"
```
document
└── html
├── head
│ └── title
└── body
├── h1
└── p
```
![bg right:45% fit](./assets/demos/dom-tree.png)
<!--
DOM = Programmierschnittstelle für HTML

58
slides/223015c/assets/demos/dns-tree.html Normal file
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@@ -0,0 +1,58 @@
<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<title>DNS-Hierarchie</title>
<style>
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, sans-serif; }
body { padding: 30px; display: inline-block; }
.tree { display: flex; flex-direction: column; align-items: center; }
.node {
background: #fef3c7;
border: 2px solid #ca8a04;
color: #713f12;
padding: 8px 18px;
border-radius: 6px;
font-family: ui-monospace, monospace;
font-weight: 700;
font-size: 0.95rem;
}
.root { background: #fde68a; border-color: #b45309; }
.leaf { background: #dbeafe; border-color: #1e40af; color: #1e3a8a; }
.level { display: flex; gap: 36px; margin-top: 12px; }
.edges {
width: 100%;
height: 20px;
position: relative;
}
svg { display: block; }
</style>
</head>
<body>
<div class="tree">
<div class="node root">. (Root)</div>
<svg width="360" height="26">
<line x1="180" y1="0" x2="60" y2="26" stroke="#d63384" stroke-width="2"/>
<line x1="180" y1="0" x2="180" y2="26" stroke="#d63384" stroke-width="2"/>
<line x1="180" y1="0" x2="300" y2="26" stroke="#d63384" stroke-width="2"/>
</svg>
<div class="level">
<div class="node">.de</div>
<div class="node">.com</div>
<div class="node">.org</div>
</div>
<svg width="360" height="26">
<line x1="60" y1="0" x2="60" y2="26" stroke="#d63384" stroke-width="2"/>
</svg>
<div class="level">
<div class="node">hdm-stuttgart</div>
</div>
<svg width="240" height="26">
<line x1="120" y1="0" x2="120" y2="26" stroke="#d63384" stroke-width="2"/>
</svg>
<div class="level">
<div class="node leaf">www</div>
</div>
</div>
</body>
</html>

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55
slides/223015c/assets/demos/dom-tree.html Normal file
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@@ -0,0 +1,55 @@
<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<title>DOM-Baum</title>
<style>
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, sans-serif; }
body { padding: 30px; display: inline-block; }
.tree { display: flex; flex-direction: column; align-items: center; }
.node {
background: #dbeafe;
border: 2px solid #1e40af;
color: #1e3a8a;
padding: 7px 16px;
border-radius: 6px;
font-family: ui-monospace, monospace;
font-weight: 700;
font-size: 0.9rem;
}
.root { background: #e0e7ff; border-color: #4f46e5; color: #3730a3; }
.content { background: #dcfce7; border-color: #15803d; color: #14532d; font-weight: 400; font-style: italic; }
.level { display: flex; gap: 28px; margin-top: 10px; align-items: flex-start; }
.col { display: flex; flex-direction: column; align-items: center; }
</style>
</head>
<body>
<div class="tree">
<div class="node root">document</div>
<svg width="200" height="24"><line x1="100" y1="0" x2="100" y2="24" stroke="#d63384" stroke-width="2"/></svg>
<div class="node root">&lt;html&gt;</div>
<svg width="380" height="26">
<line x1="190" y1="0" x2="90" y2="26" stroke="#d63384" stroke-width="2"/>
<line x1="190" y1="0" x2="290" y2="26" stroke="#d63384" stroke-width="2"/>
</svg>
<div class="level">
<div class="col">
<div class="node">&lt;head&gt;</div>
<svg width="120" height="22"><line x1="60" y1="0" x2="60" y2="22" stroke="#d63384" stroke-width="2"/></svg>
<div class="node">&lt;title&gt;</div>
</div>
<div class="col">
<div class="node">&lt;body&gt;</div>
<svg width="220" height="26">
<line x1="110" y1="0" x2="55" y2="26" stroke="#d63384" stroke-width="2"/>
<line x1="110" y1="0" x2="165" y2="26" stroke="#d63384" stroke-width="2"/>
</svg>
<div class="level">
<div class="node">&lt;h1&gt;</div>
<div class="node">&lt;p&gt;</div>
</div>
</div>
</div>
</div>
</body>
</html>

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