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# init(contentsOf:options:)

Initializes and returns an NSXMLDocument object created from the XML or HTML contents of a URL-referenced source

```
convenience init(contentsOf url: URL, options mask: XMLNode.Options = []) throws
```

## Parameters

`url`

An [`NSURL`](/documentation/Foundation/NSURL) object specifying a URL source.

`mask`

A bit mask for input options. You can specify multiple options by bit-OR’ing them. See Constants for a list of valid input options.

## Return Value

An initialized `NSXMLDocument` object, or  `nil` if initialization fails because of parsing errors or other reasons.

## Discussion

> Handling Errors in Swift:
> In Swift, this method returns a nonoptional result and is marked with the `throws` keyword to indicate that it throws an error in cases of failure.
> 
> You call this method in a `try` expression and handle any errors in the `catch` clauses of a `do` statement, as described in [Error Handling](https://docs.swift.org/swift-book/LanguageGuide/ErrorHandling.html) in [The Swift Programming Language](https://docs.swift.org/swift-book/) and `About Imported Cocoa Error Parameters`.

## See Also

  [Tree-Based XML Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/NSXML_Concepts/NSXML.html#//apple_ref/doc/uid/TP40001269)


---

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