在此页

• 句法
• 用法注意事项
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

text() 方法在 Blob interface returns a Promise that resolves with a string containing the contents of the blob, interpreted as UTF-8.

句法

var textPromise = blob.text();
blob.text().then(text => /* do something with the text */);
var text = await blob.text();
					

参数

None.

返回

A promise that resolves with a USVString which contains the blob's data as a text string. The data is always presumed to be in UTF-8 format.

用法注意事项

FileReader 方法 readAsText() is an older method that performs a similar function. It works on both Blob and File objects. There are two key differences:

• Blob.text() returns a promise, whereas FileReader.readAsText() is an event based API.
• Blob.text() always uses UTF-8 as encoding, while FileReader.readAsText() can use a different encoding depending on the blob's type and a specified encoding name.

规范

规范	状态	注释
文件 API The definition of 'Blob.text()' in that specification.	工作草案

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
text()	Chrome 76	Edge 79	Firefox 69	IE No	Opera No	Safari No	WebView Android 76	Chrome Android 76	Firefox Android No	Opera Android 54	Safari iOS No	Samsung Internet Android 12.0

图例

完整支持

完整支持

不支持

不支持

另请参阅

• Body.text()
• Streams API
• FileReader.readAsText()

元数据

• 最后修改： Sep 11, 2019

相关话题

1. Blob
2. 构造函数

   1. Blob()
3. 特性

   1. size
   2. type
4. 方法

   1. arrayBuffer()
   2. slice()
   3. stream()
   4. text()
5. 文件 API 相关页面

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