readAsText

Summary

Returns partial Blob data representing the number of bytes currently loaded (as a fraction of the total), decoded into memory according to the encoding determination.

Method of apis/file/FileReader apis/file/FileReader

Syntax

var  = FileReader.readAsText(blob, encoding);

Parameters

blob

Data-type: Blob

encoding

Data-type: any

(Optional)

Defaults to UTF-8.

Return Value

Returns an object of type DOM NodeDOM Node

Type: HRESULT

This method can return one of these values.

S_OK

Examples

var reader = new FileReader();

reader.onload = function(e) {
  var text = reader.result;
}

reader.readAsText(file);

Notes

This method asynchronously starts reading the contents of the specified File. When the read operation is complete, readyState will become DONE and the onloadend event handler (that is, callback), if present, will be invoked. At that time, the result property contains the contents of the file as a text string.

Related specifications

W3C File API Specification: W3C Working Draft

Attributions

Microsoft Developer Network: Windows Internet Explorer API reference Article