[name]
		
			A low level class for loading resources with XMLHttpRequest, used internaly by most loaders.
			It can also be used directly to load any file type that does not have a loader.
		
		Example
		
			[example:webgl_loader_msgpack WebGL / loader / msgpack]
			[example:webgl_morphtargets_human WebGL / morphtargets / human]
		
		
		var loader = new THREE.FileLoader();
		//load a text file and output the result to the console
		loader.load(
			// resource URL
			'example.txt',
			// onLoad callback
			function ( data ) {
				// output the text to the console
				console.log( data )
			},
			// onProgress callback
			function ( xhr ) {
				console.log( (xhr.loaded / xhr.total * 100) + '% loaded' );
			},
			// onError callback
			function ( err ) {
				console.error( 'An error happened' );
			}
		);
		
		
			Note: The cache must be enabled using
			THREE.Cache.enabled = true;
			This is a global property and only needs to be set once to be used by all loaders that use FileLoader internally.
			[page:Cache Cache] is a cache module that holds the response from each request made through this loader, so each file is requested once.
		
		Constructor
		[name] ( [param:LoadingManager manager] )
		
			[page:LoadingManager manager] — The [page:LoadingManager loadingManager] for the loader to use.
			Default is [page:DefaultLoadingManager].
		
		Properties
		[property:LoadingManager manager]
		
			The [page:LoadingManager loadingManager]  the loader is using. Default is [page:DefaultLoadingManager].
		
		[property:String mimeType]
		
			The expected [link:https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types mimeType].
			See [page:.setMimeType]. Default is *undefined*.
		
		[property:String path]
		The base path from which files will be loaded. See [page:.setPath]. Default is *undefined*.
		[property:object requestHeader]
		The [link:https://developer.mozilla.org/en-US/docs/Glossary/Request_header request header] used in HTTP request. See [page:.setRequestHeader]. Default is *undefined*.
		[property:String responseType]
		The expected response type. See [page:.setResponseType]. Default is *undefined*.
		[property:String withCredentials]
		
			Whether the XMLHttpRequest uses credentials. See [page:.setWithCredentials].
			Default is *undefined*.
		
		Methods
		[method:null load]( [param:String url], [param:Function onLoad], [param:Function onProgress], [param:Function onError] )
		
			[page:String url] — the path or URL to the file. This can also be a
				[link:https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs Data URI].
			[page:Function onLoad] (optional) — Will be called when loading completes. The argument will be the loaded response.
			[page:Function onProgress] (optional) — Will be called while load progresses. The argument will be the XMLHttpRequest instance,
				which contains .[page:Integer total] and .[page:Integer loaded] bytes.
			[page:Function onError] (optional) — Will be called if an error occurs.
			Load the URL and pass the response to the onLoad function.
		
		[method:FileLoader setMimeType]( [param:String mimeType] )
		
			Set the expected [link:https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types mimeType]
			of the file being loaded. Note that in many cases this will be determined automatically, so by default it is *undefined*.
		
		[method:FileLoader setPath]( [param:String path] )
		
			Set the base path or URL from which to load files. This can be useful if
			you are loading many models from the same directory.
		
		[method:FileLoader setRequestHeader]( [param:object requestHeader] )
		
			[page:object requestHeader] - key: The name of the header whose value is to be set. value: The value to set as the body of the header.
			Set the [link:https://developer.mozilla.org/en-US/docs/Glossary/Request_header request header] used in HTTP request.
		
		[method:FileLoader setResponseType]( [param:String responseType] )
		
			Change the response type. Valid values are:
			[page:String text] or empty string (default) - returns the data as [page:String string].
			[page:String arraybuffer] - loads the data into a [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer ArrayBuffer] and returns that.
			[page:String blob] - returns the data as a [link:https://developer.mozilla.org/en/docs/Web/API/Blob Blob].
			[page:String document] - parses the file using the [link:https://developer.mozilla.org/en-US/docs/Web/API/DOMParser DOMParser].
			[page:String json] - parses the file using [link:https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse JSON.parse].
		
		[method:FileLoader setWithCredentials]( [param:Boolean value] )
		
			Whether the XMLHttpRequest uses credentials such as cookies, authorization headers or
			TLS client certificates. See [link:https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/withCredentials XMLHttpRequest.withCredentials].
			Note that this has no effect if you are loading files locally or from the same domain.
		
		Source
		[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]