### Create Basic Page Structure with SwifWeb DOM Elements

Source: https://context7.com/swifweb/web/llms.txt

This snippet demonstrates how to create a basic HTML page structure using SwifWeb's DOM element abstractions. It includes headers, navigation, main content sections, and footers, showcasing declarative UI building in Swift. No external dependencies beyond the SwifWeb DOM module are required.

```swift
import DOM

let page = Div {
    Header {
        H1("Welcome to SwifWeb")
        Nav {
            A("Home").href("/").class("nav-link")
            A("About").href("/about").class("nav-link")
            A("Contact").href("/contact").class("nav-link")
        }
    }
    Main {
        Section {
            H2("Getting Started")
            P("SwifWeb makes web development in Swift a breeze.")
            Img()
                .src("/images/hero.png")
                .alt("Hero image")
                .loading(.lazy)
        }
        Article {
            H3("Features")
            Ul {
                Li("Type-safe HTML generation")
                Li("Reactive state management")
                Li("Full CSS support")
                Li("Web API integrations")
            }
        }
    }
    Footer {
        P("© 2024 My App")
    }
}
```

--------------------------------

### Establish WebSocket Connection with WebSocketAPI

Source: https://context7.com/swifweb/web/llms.txt

This Swift code snippet demonstrates how to establish a WebSocket connection using the WebSocketAPI. It covers handling connection events like opening, receiving messages, closing, and errors, as well as sending data to the server. Ensure the WebSocketAPI is imported.

```swift
import WebSocketAPI

// Create WebSocket connection
let socket = WebSocket("wss://api.example.com/ws")

// Handle connection events
socket.onOpen {
    print("Connected to server")
    socket.send("Hello, Server!")
}

socket.onMessage { event in
    print("Received: (event.data)")

    // Handle different message types
    if let text = event.data as? String {
        print("Text message: (text)")
    }
}

socket.onClose { event in
    print("Connection closed: (event.code) - (event.reason)")
}

socket.onError { error in
    print("WebSocket error occurred")
}

// Send messages
socket.send("Hello, World!")
socket.send(jsonData)

// Check connection state
if socket.readyState == .open {
    socket.send("Message while connected")
}

// Close connection
socket.close(1000, "Normal closure")
```

--------------------------------

### Persist Data with LocalStorageAPI

Source: https://context7.com/swifweb/web/llms.txt

This Swift code demonstrates how to use the LocalStorageAPI for client-side data persistence. It shows how to store and retrieve various data types (String, Int, Double, Bool) with type safety, manage storage items, and listen for storage change events. The StorageAPI must be imported.

```swift
import StorageAPI

// Store values
LocalStorage.set("John Doe", forKey: "username")
LocalStorage.set(42, forKey: "userAge")
LocalStorage.set(true, forKey: "isLoggedIn")

// Retrieve values with type safety
let username = LocalStorage.string(forKey: "username") // Optional<String>
let age = LocalStorage.integer(forKey: "userAge")       // Optional<Int>
let score = LocalStorage.double(forKey: "highScore")    // Optional<Double>

// Check storage length
print("Items in storage: (LocalStorage.length)")

// Iterate through keys
for i in 0..<LocalStorage.length {
    if let key = LocalStorage.key(at: i) {
        print("Key: (key)")
    }
}

// Listen for storage changes
LocalStorage.onChange { key, oldValue, newValue in
    print("Storage changed - Key: (key)")
}

LocalStorage.onClear {
    print("Storage was cleared")
}

// Remove specific item
LocalStorage.removeItem(forKey: "username")

// Clear all storage
LocalStorage.clear()
```

--------------------------------

### Embed and Control HTML5 Video and Audio with SwifWeb

Source: https://context7.com/swifweb/web/llms.txt

This snippet demonstrates how to embed and control HTML5 audio and video elements using SwifWeb's DOM API. It includes setting sources, attributes like controls, autoplay, and event handlers for playback events. Dependencies include the DOM module.

```swift
import DOM

let videoPlayer = Video {
    Source()
        .src("/videos/intro.webm")
        .type("video/webm")
    Source()
        .src("/videos/intro.mp4")
        .type("video/mp4")
    P("Your browser does not support the video element.")
}
.controls(true)
.autoplay(false)
.muted(true)
.loop(false)
.poster("/images/video-poster.jpg")
.preload(.metadata)
.onPlay {
    print("Video started playing")
}
.onPause {
    print("Video paused")
}
.onEnded {
    print("Video finished")
}
.onTimeUpdate {
    print("Time updated")
}

let audioPlayer = Audio {
    Source()
        .src("/audio/track.mp3")
        .type("audio/mpeg")
    Source()
        .src("/audio/track.ogg")
        .type("audio/ogg")
}
.controls(true)
.preload(.auto)
.onCanPlay {
    print("Audio ready to play")
}
.onVolumeChange {
    print("Volume changed")
}
```

--------------------------------

### Reactive State Management with @State in Swift

Source: https://context7.com/swifweb/web/llms.txt

Demonstrates how to use the @State property wrapper for reactive data binding in Swifweb. UI elements automatically update when @State variables change. Supports conditional rendering, dynamic lists, and optional error messages.

```swift
import DOM

@State var counter = 0
@State var items: [String] = ["Apple", "Banana", "Cherry"]
@State var isLoading = false
@State var errorMessage: String? = nil

let app = Div {
    // Counter example with reactive updates
    H2($counter.map { "Count: \($0)" })

    Div {
        Button("-")
            .onClick { counter -= 1 }
            .disabled($counter.map { $0 <= 0 })

        Span($counter.map { String($0) })
            .class("counter-display")

        Button("+")
            .onClick { counter += 1 }
    }
    .class("counter-controls")

    // Conditional rendering based on state
    Div {
        if isLoading {
            Span("Loading...")
                .class("spinner")
        }
    }

    // Dynamic list rendering
    Ul {
        ForEach($items) { item in
            Li(item)
                .onClick {
                    items.removeAll { $0 == item }
                }
        }
    }

    // Error display with optional binding
    $errorMessage.map { message in
        if let msg = message {
            return Div(msg).class("error-alert")
        }
        return Div()
    }
}
```

--------------------------------

### Build Form Elements and Handle Input with SwifWeb

Source: https://context7.com/swifweb/web/llms.txt

This Swift code snippet illustrates building an interactive user registration form using SwifWeb's DOM elements. It utilizes the `@State` property wrapper for two-way data binding with various input types (text, email, password, select, checkbox) and configures form attributes like action, method, and encType. An onSubmit handler is included to process form submission.

```swift
import DOM

@State var username = ""
@State var email = ""
@State var password = ""
@State var agreeToTerms = false
@State var selectedCountry = "us"

let form = Form {
    FieldSet {
        Legend("User Registration")

        Label("Username").for("username")
        InputText($username)
            .id(Id("username"))
            .name("username")
            .placeholder("Enter username")
            .minlength(3)
            .maxlength(20)
            .required(true)
            .autofocus(true)

        Label("Email").for("email")
        InputEmail($email)
            .id(Id("email"))
            .name("email")
            .placeholder("your@email.com")
            .required(true)
            .autocomplete(.email)

        Label("Password").for("password")
        InputPassword($password)
            .id(Id("password"))
            .name("password")
            .placeholder("Enter password")
            .minlength(8)
            .pattern("[A-Za-z0-9]{8,}")
            .required(true)

        Label("Country").for("country")
        Select($selectedCountry) {
            Option("United States").value("us")
            Option("Canada").value("ca")
            Option("United Kingdom").value("uk")
            OptGroup("Europe") {
                Option("Germany").value("de")
                Option("France").value("fr")
            }
        }
        .id(Id("country")),
        .name("country")

        Div {
            InputCheckbox($agreeToTerms)
                .id(Id("terms")),
                .name("terms")
                .required(true)
            Label("I agree to the terms and conditions").for("terms")
        }

        Button("Register")
            .type("submit")
            .disabled(!agreeToTerms)
    }
}
.action("/api/register")
.method(.post)
.encType(.multipartFormData)
.onSubmit { event in
    print("Form submitted with username: \(username)")
}
```

--------------------------------

### Query and Manipulate DOM Elements with DOM

Source: https://context7.com/swifweb/web/llms.txt

This Swift code snippet illustrates how to interact with the Document Object Model (DOM) using the DOM library. It covers setting document properties like title and meta description, querying single and multiple elements by selectors, updating element content and classes, and accessing element dimensions and position. The DOM library must be imported.

```swift
import DOM

let document = Window.shared.document

// Set document title reactively
document.title = "My SwifWeb App"
document.metaDescription = "A web app built with Swift"

// Query single element
if let header = document.querySelector("#header") {
    header.innerText = "Updated Header"
}

// Query multiple elements
let buttons = document.querySelectorAll(".btn")
buttons.forEach { button in
    button.class("btn-updated")
}

// Element dimensions and position
let element = Div()
let rect = element.boundingClientRect
print("Width: (rect.width), Height: (rect.height)")
print("Top: (rect.top), Left: (rect.left)")

// Offset properties
print("Offset width: (element.offsetWidth)")
print("Offset height: (element.offsetHeight)")
print("Offset top: (element.offsetTop)")
print("Offset left: (element.offsetLeft)")

// Client properties (excluding borders)
print("Client width: (element.clientWidth)")
print("Client height: (element.clientHeight)")
```

--------------------------------

### Event Handling in Swift DOM

Source: https://context7.com/swifweb/web/llms.txt

Illustrates how to attach type-safe event listeners to DOM elements using Swifweb's DOMEvents library. Covers common events like click, mouse enter/leave, input changes, focus, blur, keydown, drag and drop, and scroll. Event objects provide type information for properties like `event.key`.

```swift
import DOM
import DOMEvents

let interactiveDiv = Div {
    Button("Click Me")
        .onClick { event in
            print("Button clicked!")
        }
        .onMouseEnter {
            print("Mouse entered")
        }
        .onMouseLeave {
            print("Mouse left")
        }

    InputText()
        .onInput { event in
            print("Input changed")
        }
        .onChange { event in
            print("Value committed")
        }
        .onFocus {
            print("Input focused")
        }
        .onBlur {
            print("Input blurred")
        }
        .onKeyDown { event in
            if event.key == "Enter" {
                print("Enter pressed")
            }
        }

    Div("Drag me")
        .draggable(true)
        .onDragStart { event in
            print("Drag started")
        }
        .onDrag { event in
            print("Dragging...")
        }
        .onDragEnd { event in
            print("Drag ended")
        }

    Div("Drop here")
        .onDragOver { event in
            event.preventDefault()
        }
        .onDrop { event in
            print("Dropped!")
        }
}
.onScroll { event in
    print("Scrolling...")
}
```

--------------------------------

### Document and Element Selection API

Source: https://context7.com/swifweb/web/llms.txt

Query and manipulate DOM elements using standard selector syntax. This API allows for interacting with the web page's structure and content.

```APIDOC
## Document and Element Selection

### Description
Query and manipulate DOM elements using standard selector syntax.

### Method
DOM Manipulation

### Endpoint
N/A (Browser DOM)

### Parameters
N/A

### Request Example
```swift
import DOM

let document = Window.shared.document

document.title = "My SwifWeb App"

// Query single element
if let header = document.querySelector("#header") {
    header.innerText = "Updated Header"
}

// Query multiple elements
let buttons = document.querySelectorAll(".btn")
buttons.forEach { button in
    button.class("btn-updated")
}

// Element dimensions
let element = Div()
let rect = element.boundingClientRect
print("Width: \(rect.width)")
```

### Response
#### Success Response (DOM Operations)
- **document.title**: Sets the document title.
- **document.querySelector**: Selects a single element.
- **document.querySelectorAll**: Selects multiple elements.
- **element.innerText**: Sets the text content of an element.
- **element.class**: Adds or modifies CSS classes.
- **element.boundingClientRect**: Returns the size and position of an element.

#### Response Example
```swift
let buttons = document.querySelectorAll(".btn")
buttons.forEach { button in
    button.class("btn-updated")
}
```
```

--------------------------------

### Build Data Tables with DOM

Source: https://context7.com/swifweb/web/llms.txt

This Swift code snippet demonstrates how to programmatically construct HTML table elements using the DOM library. It includes creating table headers (THead), body (TBody) with iterated rows (Tr) and data cells (Td), and a footer (TFoot). It also shows how to add attributes like scope, colSpan, and event handlers like onClick to buttons within the table. The DOM library must be imported.

```swift
import DOM

let users = [
    ("John", "john@example.com", "Admin"),
    ("Jane", "jane@example.com", "User"),
    ("Bob", "bob@example.com", "Editor")
]

let table = Table {
    THead {
        Tr {
            Th("Name").scope(.col)
            Th("Email").scope(.col)
            Th("Role").scope(.col)
            Th("Actions").scope(.col)
        }
    }
    TBody {
        ForEach(users) { user in
            Tr {
                Td(user.0)
                Td(user.1)
                Td(user.2)
                Td {
                    Button("Edit")
                        .class("btn btn-sm")
                        .onClick {
                            print("Edit (user.0)")
                        }
                    Button("Delete")
                        .class("btn btn-sm btn-danger")
                        .onClick {
                            print("Delete (user.0)")
                        }
                }
            }
        }
    }
    TFoot {
        Tr {
            Td("Total: (users.count) users")
                .colSpan(4)
        }
    }
}
.class("data-table")
.summary("User management table")
```

--------------------------------

### CSS Styling with Stylesheet in Swift

Source: https://context7.com/swifweb/web/llms.txt

Shows how to define CSS rules programmatically using the Stylesheet class in Swifweb. Supports various selectors (element, class, ID), nested rules, pseudo-classes (hover), media queries, and keyframe animations. Styles are applied directly to the document's head.

```swift
import CSS
import DOM

let stylesheet = Stylesheet {
    // Element selector
    CSSRule(Body.pointer)
        .fontFamily("system-ui, -apple-system, sans-serif")
        .margin(0.px)
        .padding(0.px)
        .backgroundColor(.hex("#f5f5f5"))

    // Class selector
    CSSRule(Class("container"))
        .maxWidth(1200.px)
        .margin(0.px, .auto)
        .padding(20.px)

    // ID selector
    CSSRule(Id("header"))
        .backgroundColor(.hex("#333"))
        .color(.white)
        .padding(15.px, 20.px)

    // Nested selectors
    CSSRule(Class("nav"), A.pointer)
        .color(.white)
        .textDecoration(.none)
        .padding(10.px, 15.px)

    // Hover state
    CSSRule(Class("btn"))
        .backgroundColor(.hex("#007bff"))
        .color(.white)
        .padding(10.px, 20.px)
        .borderRadius(5.px)
        .cursor(.pointer)
        .transition("background-color 0.3s ease")

    // Media queries
    MediaRule(.maxWidth(768.px)) {
        CSSRule(Class("container"))
            .padding(10.px)

        CSSRule(Class("nav"))
            .display(.block)
    }

    // Keyframe animations
    Keyframes("fadeIn") {
        KeyframeSelector(0.percent)
            .opacity(0)
        KeyframeSelector(100.percent)
            .opacity(1)
    }
}

// Apply styles to elements
Window.shared.document.head.appendChild(stylesheet)
```

--------------------------------

### Table Elements API

Source: https://context7.com/swifweb/web/llms.txt

Build data tables with proper semantic structure using Swift. This API allows for the programmatic creation of HTML table elements.

```APIDOC
## Table Elements

### Description
Build data tables with proper semantic structure using Swift.

### Method
Table Creation

### Endpoint
N/A (DOM Manipulation)

### Parameters
N/A

### Request Example
```swift
import DOM

let users = [("John", "john@example.com", "Admin")]

let table = Table {
    THead {
        Tr {
            Th("Name")
        }
    }
    TBody {
        ForEach(users) { user in
            Tr {
                Td(user.0)
            }
        }
    }
}
.class("data-table")
```

### Response
#### Success Response (Table Structure)
- **Table**: Constructor for creating a table.
- **THead, TBody, TFoot**: Constructors for table sections.
- **Tr**: Constructor for table rows.
- **Th, Td**: Constructors for table header and data cells.
- **ForEach**: Iterates over data to create rows.
- **Button**: Creates buttons within table cells.
- **class**: Adds CSS classes to the table.
- **summary**: Adds a summary to the table.

#### Response Example
```swift
let table = Table {
    THead {
        Tr {
            Th("Name").scope(.col)
            Th("Email").scope(.col)
        }
    }
    TBody {
        ForEach(users) { user in
            Tr {
                Td(user.0)
                Td(user.1)
            }
        }
    }
}
```
```

--------------------------------

### WebSocket API

Source: https://context7.com/swifweb/web/llms.txt

Establish real-time bidirectional communication with WebSocket servers. This API allows for sending and receiving messages, handling connection events, and managing connection state.

```APIDOC
## WebSocket API

### Description
Establish real-time bidirectional communication with WebSocket servers.

### Method
WebSocket

### Endpoint
wss://api.example.com/ws

### Parameters
N/A

### Request Example
```swift
import WebSocketAPI

let socket = WebSocket("wss://api.example.com/ws")
socket.onOpen { ... }
socket.onMessage { ... }
socket.onClose { ... }
socket.onError { ... }
socket.send("Hello, Server!")
socket.close(1000, "Normal closure")
```

### Response
#### Success Response (Connection Events)
- **onOpen**: Called when the connection is established.
- **onMessage**: Called when a message is received.
- **onClose**: Called when the connection is closed.
- **onError**: Called when an error occurs.

#### Response Example
```swift
// Example of onMessage handler
socket.onMessage { event in
    print("Received: \(event.data)")
}
```
```

--------------------------------

### Local Storage API

Source: https://context7.com/swifweb/web/llms.txt

Persist data in the browser's local storage with type-safe accessors. This API provides methods for storing, retrieving, and managing data locally.

```APIDOC
## Local Storage API

### Description
Persist data in the browser's local storage with type-safe accessors.

### Method
LocalStorage

### Endpoint
N/A (Browser Local Storage)

### Parameters
N/A

### Request Example
```swift
import StorageAPI

// Store values
LocalStorage.set("John Doe", forKey: "username")
LocalStorage.set(42, forKey: "userAge")

// Retrieve values
let username = LocalStorage.string(forKey: "username")
let age = LocalStorage.integer(forKey: "userAge")

// Remove item
LocalStorage.removeItem(forKey: "username")

// Clear all storage
LocalStorage.clear()
```

### Response
#### Success Response (Storage Operations)
- **set**: Stores a value for a given key.
- **string, integer, double**: Retrieves a value with type safety.
- **length**: Returns the number of items in storage.
- **key(at:)**: Returns the key at a specific index.
- **onChange**: Callback for storage change events.
- **onClear**: Callback for storage clear events.
- **removeItem**: Removes a specific item.
- **clear**: Clears all local storage.

#### Response Example
```swift
LocalStorage.onChange { key, oldValue, newValue in
    print("Storage changed - Key: \(key)")
}
```
```

--------------------------------

### Create Scalable Vector Graphics (SVG) in Swift with SwifWeb

Source: https://context7.com/swifweb/web/llms.txt

This code snippet shows how to generate SVG graphics directly within Swift using SwifWeb's DOM API. It covers creating gradients, circles, paths, and text elements, along with setting attributes and viewbox for scalability. The DOM module is a required dependency.

```swift
import DOM

let icon = Svg {
    SVGDefs {
        LinearGradient {
            SVGStop()
                .attribute("offset", "0%")
                .attribute("stop-color", "#667eea")
            SVGStop()
                .attribute("offset", "100%")
                .attribute("stop-color", "#764ba2")
        }
        .id(Id("gradient"))
    }

    SVGСircle()
        .attribute("cx", "50")
        .attribute("cy", "50")
        .attribute("r", "40")
        .attribute("fill", "url(#gradient)")

    Path()
        .attribute("d", "M30 50 L45 65 L70 35")
        .attribute("stroke", "white")
        .attribute("stroke-width", "4")
        .attribute("fill", "none")
        .attribute("stroke-linecap", "round")
        .attribute("stroke-linejoin", "round")

    SVGText("✓")
        .attribute("x", "50")
        .attribute("y", "55")
        .attribute("text-anchor", "middle")
        .attribute("fill", "white")
        .attribute("font-size", "24")
}
.attribute("viewBox", "0 0 100 100")
.attribute("width", "48")
.attribute("height", "48")
.class("icon-success")
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.