## RevisionLogCollection class

Represents all revision logs.

```javascript
class RevisionLogCollection;
```


## Properties

| Property | Type | Description |
| --- | --- | --- |
| [daysPreservingHistory](#daysPreservingHistory--)| number | Gets and sets the number of days the spreadsheet application will keep the change history for this workbook. |

## Methods

| Method | Description |
| --- | --- |
| [get(number)](#get-number-)| Gets [RevisionLog](../revisionlog/) by index. |
| [highlightChanges(HighlightChangesOptions)](#highlightChanges-highlightchangesoptions-)| Highlights changes of shared workbook. |


### daysPreservingHistory {#daysPreservingHistory--}

Gets and sets the number of days the spreadsheet application will keep the change history for this workbook.

```javascript
daysPreservingHistory : number;
```


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

Gets [RevisionLog](../revisionlog/) by index.

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

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

**Returns**

Returns [RevisionLog](../revisionlog/) object.

### highlightChanges(HighlightChangesOptions) {#highlightChanges-highlightchangesoptions-}

Highlights changes of shared workbook.

```javascript
highlightChanges(options: HighlightChangesOptions) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| options | [HighlightChangesOptions](../highlightchangesoptions/) | Set the options for filtering which changes should be tracked. |