In JavaScript ... callback function: // Define a function that takes a callback as an argument function doSomethingAsync(callback) { // Simulate an asynchronous operation setTimeout(function ...

J. Bernstein's Constant Database program. find(key,callback,offset) - Finds the first instance of a key and returns the value in the callback. false if the key was not found. key (string) - they key ...

A set of overrides to existing JavaScript functions that take callbacks, which will log an error if an exception is thrown during the invocation of the callback. This ...