Blob.size

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.

Blob.size 屬性回傳以 byte 為單位的 Blob 或一個 File 的大小。

語法

var sizeInBytes = blob.size

一個數字。

範例

js
// fileInput 是個 HTMLInputElement: <input type="file" multiple id="myfileinput">
var fileInput = document.getElementById("myfileinput");

// files 是個 FileList 物件 (類似 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");
}

規格

Specification
File API
# dfn-size

瀏覽器相容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
size

Legend

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Full support
Full support
Has more compatibility info.

參見