Syntax
var sizeInBytes = blob.size
Value
The number of bytes of data contained within the Blob
(or
Blob
-based object, such as a File
).
Example
This example uses an <input>
element of type file
to ask
the user for a group of files, then iterates over those files outputting their names and
lengths in bytes.
// fileInput is a HTMLInputElement: <input type="file" multiple id="myfileinput">
var fileInput = document.getElementById("myfileinput");
// files is a FileList object (simliar to NodeList)
var files = fileInput.files;
for (var i = 0; i < files.length; i++) {
console.log(files[i].name + " has a size of " + files[i].size + " Bytes");
}
Specifications
Specification | Status | Comment |
---|---|---|
File API The definition of 'Blob.size' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
BCD tables only load in the browser