The FileReader()
constructor creates a new FileReader.
For details about how to use FileReader
, see Using files from web applications.
The FileReader()
constructor creates a new FileReader.
For details about how to use FileReader
, see Using files from web applications.
new FileReader();
None.
The following code snippet shows creation of a FileReader
object using the FileReader()
constructor and subsequent usage of the object:
function printFile(file) { const reader = new FileReader(); reader.onload = function(evt) { console.log(evt.target.result); }; reader.readAsText(file); }
Specification |
---|
File API # filereaderConstrctr |
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
FileReader |
6
|
12
|
3.6
|
10
|
≤12.1
|
6
|
3
|
18
|
32
|
≤12.1
|
6
|
1.0
|
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https://developer.mozilla.org/en-US/docs/Web/API/FileReader/FileReader