在此页

• 句法
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

TextEncoder() constructor returns a newly created utf-8 TextEncoder 对象。

句法

encoder = new TextEncoder();
					

参数

• TextEncoder() takes no parameters since Firefox 48 and Chrome 53

注意 : Prior to Firefox 48 and Chrome 53, an encoding type label was accepted as a paramer to the TextEncoder object, since then both browers have removed support for any encoder type other than utf-8 , to match the spec . Any type label passed into the TextEncoder constructor will now be ignored and a utf-8 TextEncoder 将被创建。

异常

• TextEncoder() throws no exceptions since Firefox 48 and Chrome 53

注意 : Prior to Firefox 48 and Chrome 53 an exception would be thrown for an unknown encoding type.

规范

规范	状态	注释
编码 The definition of 'TextEncoder()' in that specification.	实时标准	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
TextEncoder() 构造函数	Chrome 53 注意事项 53 注意事项 Does not accept parameters. Supports only utf-8 编码。 38 — 53 注意事项 抛出 RangeError exception for unknown encoding types.	Edge 79 注意事项 79 注意事项 Does not accept parameters. Supports only utf-8 编码。	Firefox 48 注意事项 48 注意事项 The constructor accepts an encoding type label argument, but the value is ignored. Only utf-8 encoding is supported. 38 — 48 注意事项 If the encoding type label argument is invalid, then a RangeError exception is thrown. 19 — 38 注意事项 If the encoding type label argument is invalid, then a TypeError exception is thrown. 18 注意事项 Firefox 18 implemented an earlier and slightly different version of the specification.	IE 不支持 No	Opera 25	Safari 10.1	WebView Android 38	Chrome Android 38	Firefox Android 48 注意事项 48 注意事项 The constructor accepts an encoding type label argument, but the value is ignored. Only utf-8 encoding is supported. 38 — 48 注意事项 If the encoding type label argument is invalid, then a RangeError exception is thrown. 19 — 38 注意事项 If the encoding type label argument is invalid, then a TypeError exception is thrown. 18 注意事项 Firefox 18 implemented an earlier and slightly different version of the specification.	Opera Android ?	Safari iOS 10.3	Samsung Internet Android 3.0

图例

完整支持

完整支持

不支持

不支持

兼容性未知 ?

兼容性未知

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

见实现注意事项。

另请参阅

• TextEncoder interface it belongs to.

元数据

• 最后修改： Mar 25, 2019

相关话题

1. 编码 API
2. TextEncoder
3. 构造函数

   1. TextEncoder()
4. 特性

   1. encoding
5. 方法

   1. encode()
   2. encodeInto()
6. Related pages for Encoding API

   1. TextDecoder