## WebExtensionCollection class

Represents the list of web extension.

```javascript
class WebExtensionCollection implements Iterable<WebExtension>;
```


## Methods

| Method | Description |
| --- | --- |
| [get(number)](#get-number-)| Gets web extension by the specific index. |
| [add()](#add--)| Adds a web extension. |
| [addWebVideoPlayer(string, boolean, number, number)](#addWebVideoPlayer-string-boolean-number-number-)| Add a web video player into exel. |
| [removeAt(number)](#removeAt-number-)| Remove web extension by the index. |
| [getCount()](#getCount--)| <b>@deprecated.</b> Please use the 'count' property instead. Gets the number of elements contained in. |
| [isNull()](#isNull--)| Checks whether the implementation object is null. |

## \[Symbol.iterator\](): Iterator\<WebExtension\>

Returns an iterator over the items in the collection. Enables use of `for...of`, spread syntax, and `Array.from()`.



### get(number) {#get-number-}

Gets web extension by the specific index.

```javascript
get(index: number) : WebExtension;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | The index. |

**Returns**

The  web extension.

### add() {#add--}

Adds a web extension.

```javascript
add() : number;
```


**Returns**

The index.

### addWebVideoPlayer(string, boolean, number, number) {#addWebVideoPlayer-string-boolean-number-number-}

Add a web video player into exel.

```javascript
addWebVideoPlayer(url: string, autoPlay: boolean, startTime: number, endTime: number) : number;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| url | string |  |
| autoPlay | boolean | Indicates whether auto playing the video. |
| startTime | number | The start time in unit of seconds. |
| endTime | number | The end time in unit of seconds. |

### removeAt(number) {#removeAt-number-}

Remove web extension by the index.

```javascript
removeAt(index: number) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | The index. |

### getCount() {#getCount--}

<b>@deprecated.</b> Please use the 'count' property instead. Gets the number of elements contained in.

```javascript
getCount() : number;
```


### isNull() {#isNull--}

Checks whether the implementation object is null.

```javascript
isNull() : boolean;
```