### Initialize VK Global JavaScript Object

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/login.html

This immediately-invoked function expression (IIFE) ensures that the global 'vk' object is initialized only once. It sets essential properties such as 'id', 'ts' (timestamp), '__debug' flag, and 'rv' (revision number), and records the application's start time using 'vkNow()'. This setup is crucial for the VK client-side JavaScript framework.

```javascript
!window.__jsInited && (function () {
    window.vk = {"id": 0, "ts": 1552161996, "__debug": false, "rv": "18453"};
    vk.started = vkNow();
    window.__jsInited = true;
})();
```

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

### Basic VKNet JSON Update Payload

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Categories/BotsLongPoll/FullLongPollFormat.txt

This JSON snippet demonstrates the fundamental structure for an update payload in the VKNet system. It includes a 'ts' field for the timestamp and an 'updates' array which is designed to contain individual update objects. The `[{0}]` serves as a placeholder for actual update data.

```JSON
{
	"ts": "713",
	"updates": [{0}]
}
```

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

### Initialize VK Global Objects and Audio Player in JavaScript

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/consent.html

This JavaScript block initializes global VK objects, including user ID, timestamp, debug status, and revision. It also sets up the audio and audioplayer modules with specific configurations, such as cookie names and API hashes. Finally, it includes a DOM ready handler to automatically open the audio player if the URL hash is '#player' and a playlist exists. This ensures core application components are ready upon page load.

```JavaScript
extend(cur, {module: 'i-oauth'});
!window.__jsInited && (function () {
  window.vk = {"id": 32190123, "ts": 1552162134, "__debug": false, "rv": "18453"};
  vk.started = vkNow();
  window.audio && audio.init({"cookie": "remixmaudio", "cookie_path": "\\/"});
  window.audioplayer && audioplayer.init({
    "add_hash": "bbfea29313fa0c000c",
    "del_hash": "c7f8b564a2abb9b9",
    "res_hash": "bf9a3461a4ef1f27b0",
    "use_new_stats": true
  });
  onDOMReady(function () {
    if ( window.nav && window.audio && window.audioplayer && nav.hash == '#player' && audio.playlist().length ) {
      audioplayer.openPlayer(ge('lm_audio'), true);
    }
  });
  window.__jsInited = true;
})();
```

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

### Configure VK Sticker URL Template in JavaScript

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/consent.html

This JavaScript snippet configures the URL template for VK stickers within the window.store.stickers object. It defines how sticker URLs should be constructed, using placeholders for ID and size, enabling dynamic loading of sticker images.

```JavaScript
window.store.stickers = {"url_template": "https:\/\/vk.com\/sticker\/1-%id%-%size%-7"};
```

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

### VK Global JavaScript Initialization

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/captcha.html

This snippet performs essential client-side initialization for the VK application. It sets the current module, initializes the global 'vk' object with core properties like ID, timestamp, debug status, and revision, and configures the URL template for stickers.

```javascript
extend(cur, {module: 'i-oauth'});
!window.__jsInited && (function () {
  window.vk = {"id": 0, "ts": 1552162101, "__debug": false, "rv": "18453"};
  vk.started = vkNow();
  window.__jsInited = true;
})();
window.store.stickers = {"url_template": "https:\/\/vk.com\/sticker\/1-%id%-%size%-7"};
```

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

### Configure VK Stickers URL Template

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/login.html

This snippet configures the URL template for VK stickers within the global 'window.store.stickers' object. It provides a base URL with placeholders for '%id%' and '%size%', enabling the dynamic generation of sticker image URLs based on specific sticker identifiers and desired display sizes.

```javascript
window.store.stickers = {"url_template": "https:\/\/vk.com\/sticker\/1-%id%-%size%-7"};
```

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

### Extend Current Module for OAuth

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/login.html

This snippet extends the global 'cur' object, setting its 'module' property to 'i-oauth'. This is typically used within the VK application's framework to identify the currently active module or context, allowing for module-specific logic and data management.

```javascript
extend(cur, {module: 'i-oauth'});
```

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

### Toggle OAuth Phone Privacy Setting in JavaScript

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/consent.html

This JavaScript function toggles the phone privacy setting for OAuth access. Similar to email privacy, it updates a CSS class, a hidden input value, and the href of an "allow" button to reflect the new privacy state, ensuring the correct parameter is passed on click.

```JavaScript
var togglePhonePrivacy = function () {
  var pcont = geByClass1('pcont', 'm'),
    deny = !hasClass('oauth_access_phone_denied', pcont),
    allow_btn = ge('allow_btn');
  toggleClass('oauth_access_phone_denied', pcont, deny);
  val('phone_denied', deny ? 1 : 0);
  if (allow_btn) {
    var href = attr(allow_btn, 'href') || attr(allow_btn, 'data-href');
    attr(allow_btn, 'data-href', false);
    href = href.replace('&phone_denied=1', '');
    if (deny) href += '&phone_denied=1';
    attr(allow_btn, 'href', href);
    prepareClick(allow_btn);
  }
  return false;
};
```

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

### Toggle Phone Privacy Setting in VK OAuth

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/captcha.html

Similar to email privacy, this JavaScript function handles the user's phone privacy setting during an OAuth flow. It updates the UI, a hidden input field, and the 'allow' button's URL to reflect the current denial or allowance state for phone access.

```javascript
var togglePhonePrivacy = function () {
  var pcont = geByClass1('pcont', 'm'),
  deny = !hasClass('oauth_access_phone_denied', pcont),
  allow_btn = ge('allow_btn');
  toggleClass('oauth_access_phone_denied', pcont, deny);
  val('phone_denied', deny ? 1 : 0);
  if (allow_btn) {
    var href = attr(allow_btn, 'href') || attr(allow_btn, 'data-href');
    attr(allow_btn, 'data-href', false);
    href = href.replace('&phone_denied=1', '');
    if (deny) href += '&phone_denied=1';
    attr(allow_btn, 'href', href);
    prepareClick(allow_btn);
  }
  return false;
};
```

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

### Toggle Email Privacy Setting in VK OAuth

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/captcha.html

This JavaScript function manages the user's email privacy setting within an OAuth context. It dynamically updates the UI to reflect whether email access is denied or allowed, modifies a hidden input field's value, and adjusts the 'allow' button's URL parameter to persist the privacy choice.

```javascript
var toggleEmailPrivacy = function () {
  var pcont = geByClass1('pcont', 'm'),
  deny = !hasClass('oauth_access_email_denied', pcont),
  allow_btn = ge('allow_btn');
  toggleClass('oauth_access_email_denied', pcont, deny);
  val('email_denied', deny ? 1 : 0);
  if (allow_btn) {
    var href = attr(allow_btn, 'href') || attr(allow_btn, 'data-href');
    attr(allow_btn, 'data-href', false);
    href = href.replace('&email_denied=1', '');
    if (deny) href += '&email_denied=1';
    attr(allow_btn, 'href', href);
    prepareClick(allow_btn);
  }
  return false;
}
```

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

### Toggle Phone Privacy for OAuth Access

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/login.html

This JavaScript function toggles the phone privacy setting for OAuth access. Similar to the email privacy function, it manipulates UI elements, updates a hidden input field to reflect the denied/allowed state, and modifies the 'allow' button's href to include or remove the 'phone_denied=1' parameter, ensuring the server receives the correct privacy preference.

```javascript
var togglePhonePrivacy = function () {
    var pcont = geByClass1('pcont', 'm'),
        deny = !hasClass('oauth_access_phone_denied', pcont),
        allow_btn = ge('allow_btn');
    toggleClass('oauth_access_phone_denied', pcont, deny);
    val('phone_denied', deny ? 1 : 0);
    if (allow_btn) {
        var href = attr(allow_btn, 'href') || attr(allow_btn, 'data-href');
        attr(allow_btn, 'data-href', false);
        href = href.replace('&phone_denied=1', '');
        if (deny) href += '&phone_denied=1';
        attr(allow_btn, 'href', href);
        prepareClick(allow_btn);
    }
    return false;
};
```

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

### Toggle Email Privacy for OAuth Access

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/login.html

This JavaScript function toggles the email privacy setting for OAuth access. It updates the UI by adding or removing a CSS class, modifies a hidden input field's value to reflect the new privacy state (denied/allowed), and dynamically adjusts the 'allow' button's href attribute to include or remove the 'email_denied=1' parameter.

```javascript
var toggleEmailPrivacy = function () {
    var pcont = geByClass1('pcont', 'm'),
        deny = !hasClass('oauth_access_email_denied', pcont),
        allow_btn = ge('allow_btn');
    toggleClass('oauth_access_email_denied', pcont, deny);
    val('email_denied', deny ? 1 : 0);
    if (allow_btn) {
        var href = attr(allow_btn, 'href') || attr(allow_btn, 'data-href');
        attr(allow_btn, 'data-href', false);
        href = href.replace('&email_denied=1', '');
        if (deny) href += '&email_denied=1';
        attr(allow_btn, 'href', href);
        prepareClick(allow_btn);
    }
    return false;
}
```

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

### Toggle OAuth Email Privacy Setting in JavaScript

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/consent.html

This JavaScript function toggles the email privacy setting for OAuth access. It updates a CSS class on a container element, sets a hidden input value, and modifies the href attribute of an "allow" button to reflect the new privacy state, ensuring the correct parameter is passed on click.

```JavaScript
var toggleEmailPrivacy = function () {
  var pcont = geByClass1('pcont', 'm'),
    deny = !hasClass('oauth_access_email_denied', pcont),
    allow_btn = ge('allow_btn');
  toggleClass('oauth_access_email_denied', pcont, deny);
  val('email_denied', deny ? 1 : 0);
  if (allow_btn) {
    var href = attr(allow_btn, 'href') || attr(allow_btn, 'data-href');
    attr(allow_btn, 'data-href', false);
    href = href.replace('&email_denied=1', '');
    if (deny) href += '&email_denied=1';
    attr(allow_btn, 'href', href);
    prepareClick(allow_btn);
  }
  return false;
}
```

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

### Clear Document Body if in Iframe in JavaScript

Source: https://github.com/vknet/vk/blob/develop/VkNet.Tests/TestData/Authorization/consent.html

This JavaScript snippet checks if the current window is an iframe (i.e., parent exists and is not the current window). If it is, it clears the entire content of the document's body element. This is often used for security or content control within embedded contexts.

```JavaScript
parent && parent != window && (document.getElementsByTagName('body')[0].innerHTML = '');
```

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