component-file
v0.1.1
Published
File & FileReader wrappers
Downloads
90
Maintainers
Readme
File
File component wrapping the native File
and FileReader
objects
with a higher level API.
Installation
node.js:
$ npm install file-component
browser:
$ component install component/file
Events
Reader
error
an error occurredprogress
in progress (e.percent
etc)end
read is complete
Example
var file = require('file');
var input = document.querySelector('input');
input.onchange = function(){
var img = file(input.files[0]);
if (!img.is('image/*')) {
alert('Images only!');
return;
}
var reader = img.toDataURL(function(err, str){
if (err) throw err;
var img = document.createElement('img');
img.src = str;
img.height = 300;
document.body.appendChild(img);
});
reader.on('progress', function(e){
console.log(e.percent);
});
};
API
file(file)
Wraps a File
object:
var file = require('file');
file(input.files[0]);
File#is(type)
Returns a boolean if the file's mime type matches type
:
var file = require('file');
file(input.files[0]);
file.is('image/*');
file.is('image/jpeg');
file.is('*/json');
File#toArrayBuffer(fn)
Convert to an ArrayBuffer
and invoke fn(err, result)
,
returns a Reader
.
File#toText(fn)
Convert to text and invoke fn(err, result)
,
returns a Reader
.
File#toDataURL(fn)
Convert to a data uri string and invoke fn(err, result)
,
returns a Reader
.
License
MIT