Window btoa()Method

Window 对象参考手册Window Object


Definition and Usage

The btoa() method is used to create a base-64 encoded string.

This method uses the characters "A-Z", "a-z", "0-9", "+", "/" and "=" to encode the string.

The base-64 decoding method isatob() 。

Syntax

window.btoa(str)

Parameter description:

  • str: Required. The string to be encoded.

Return Value

This method returns a base-64 encoded string.

Browser Support

The numbers in the table specify the first browser version that fully supports the method.

Method
btoa() Yes 10.0 1.0 Yes Yes

Example

Example

Create a base-64 encoded string:

var str = "EXAMPLE"; var enc = window.btoa(str); var res = "Encoded string:" + enc;

Try it Yourself »

Window 对象参考手册Window Object

Other Extensions