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The most used and known of the console methods is the console.log to output a message in the web console. The message may be a simple string with optional substitution values(%s, %c, etc...) or one or more javascript objects. Console.dir() displays an interactive list of the properties of a javascript object. The table method, when called on the console object, displays the data in a table format. With console.group, a set of data can be grouped and contain sub-group of related data.