function onGlobalMessage()

in www/benchmarks/setImmediate.js [156:164]

• 6 lines of code
• 3 McCabe index (conditional complexity)

        function onGlobalMessage(event) {
            // This will catch all incoming messages (even from other windows!), so we need to try reasonably hard to
            // avoid letting anyone else trick us into firing off. We test the origin is still this window, and that a
            // (randomly generated) unpredictable identifying prefix is present.
            if (event.source === global && isStringAndStartsWith(event.data, MESSAGE_PREFIX)) {
                var handle = event.data.substring(MESSAGE_PREFIX.length);
                tasks.runIfPresent(handle);
            }
        }