## HtmlFixedSaveOptions.idPrefix property

Specifies a prefix that is prepended to all generated element IDs in the output document.
Default value is null and no prefix is prepended.


```js
get idPrefix(): string
```

### Exceptions

| exception | condition |
| --- | --- |
| RuntimeError (Proxy error(ArgumentException)) | The value does not meet the requirements specified above. |

### Remarks

If the prefix is specified, it can contain only letters, digits, underscores, and hyphens,
and must start with a letter.


### See Also

* module [Aspose.Words.Saving](../../)
* class [HtmlFixedSaveOptions](../)