This feature has been removed from the Web. Though some browsers may still support it, it is in the process of being dropped. Do not use it in old or new projects. Pages or Web apps using it may break at any time.

Set the runtime-wide principals transcoder callback. This function is deprecated. In SpiderMonkey 1.8.1 or later, use JS_SetRuntimeSecurityCallbacks instead.


JSPrincipalsTranscoder JS_SetPrincipalsTranscoder(JSRuntime *rt,
                                                  JSPrincipalsTranscoder px);
Name Type Description
rt JSRuntime * The runtime to configure.
px JSPrincipalsTranscoder  The new principals transcoder.


JS_SetPrincipalsTranscoder sets a runtime-wide callback which the JavaScript engine uses to serialize and deserialize principals. This callback is described at JSPrincipalsTranscoder.

JS_SetPrincipalsTranscoder returns the previous principals transcoder.

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 Contributors to this page: fscholz, Jorend, Jimb
 Last updated by: fscholz,