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• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

readAsText() method is used to read the contents of the specified Blob or File . When the read operation is complete, the readyState is changed to DONE ， loadend event is triggered, and the result property contains the contents of the file as a text string.

Newer API avaliable
Blob.text() method is a newer promise-based API to read a file as text.

句法

instanceOfFileReader.readAsText(blob[, encoding]);
					

参数

blob

Blob or File from which to read.

encoding 可选

A string specifying the encoding to use for the returned data. By default, UTF-8 is assumed if this parameter is not specified.

规范

规范	状态	注释
文件 API The definition of 'readAsText()' in that specification.	工作草案	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
readAsText	Chrome 7	Edge 12	Firefox 3.6	IE 10	Opera 11	Safari 6	WebView Android ≤37	Chrome Android 18	Firefox Android 32	Opera Android 11	Safari iOS 6.1	Samsung Internet Android 1.0

图例

完整支持

完整支持

另请参阅

• FileReader

元数据

• 最后修改： Jan 31, 2020

相关话题

1. FileReader
2. 构造函数

   1. FileReader()
3. 特性

   1. error
   2. onabort
   3. onload
   4. readyState
   5. result
4. 方法

   1. abort()
   2. readAsArrayBuffer()
   3. readAsBinaryString()
   4. readAsDataURL()
   5. readAsText()
5. 事件

   1. abort
   2. error
   3. load
   4. loadend
   5. loadstart
   6. progress
6. 继承：

   1. EventTarget
7. 文件 API 相关页面

   1. Blob
   2. File
   3. FileList
   4. FileReaderSync