Mute and capture console.log in the browser

mute.js

// completely mute
console.log = function() {};

// captured data in log
var log = [];
console.log = function() {
  log.push([].slice.call(arguments));
};

// fancy namespaced version. Demo -> http://codepen.io/KarlPokus/pen/rLwXQX/
(function(c) {
  var saved = c.log,
      data = [];
  
  c.mute = function() {
    c.log = function(str) {
      var args = (arguments.length > 1) ? [].slice.call(arguments) : str;
      data.push(args);
    };
  };
  
  c.resume = function() {
    c.log = saved;
    var out = data;
    data = []; // reset
    return out;
  }
})(console);

// test
console.log('a'); // logs
console.mute();
console.log('b'); // muted
console.log('c', 'd'); // muted
var muted = console.resume(); // reset and resume
console.log('e'); // logs
console.log(muted); // logs ['b', ['c', 'd']]

Added fancy namespaced version. Demo