DOM:window.btoa

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Contents 1 Summary 2 Syntax 3 Example 4 Notes 5 Specification 6 See also

[edit] Summary

Creates a base-64 encoded ASCII string from a string of binary data.

[edit] Syntax

var encodedData = window.btoa(stringToEncode);

[edit] Example

var encodedData = window.btoa("Hello, world"); // encode a string
var decodedData = atob(encodedData); // decode the string

[edit] Notes

You can use this method to encode data which may otherwise cause communication problems, transmit it, then use the window.atob method to decode the data again. For example, you can encode control characters such as ASCII values 0 through 31.

btoa() is also available to XPCOM components implemented in JavaScript, even though window is not the global object in components.

[edit] Specification

DOM Level 0. Not part of any standard.

[edit] See also

atob