WB 2.11.0

// Native Javascript for Bootstrap 3 | Alert

// by dnp_theme

(function(factory){

  // CommonJS/RequireJS and "native" compatibility

  if(typeof module !== "undefined" && typeof exports == "object") {

    // A commonJS/RequireJS environment

    if(typeof window != "undefined") {

      // Window and document exist, so return the factory's return value.

      module.exports = factory();

    } else {

      // Let the user give the factory a Window and Document.

      module.exports = factory;

    }

  } else {

    // Assume a traditional browser.

    window.Alert = factory();

  }

})(function(root){

  // ALERT DEFINITION

  // ===================

  var Alert = function( element ) {

    this.btn = typeof element === 'object' ? element : document.querySelector(element);

    this.alert = null;

    this.duration = 150; // default alert transition duration

    this.init();

  }

  // ALERT METHODS

  // ================

  Alert.prototype = {

    init : function() {

      this.actions();

      document.addEventListener('click', this.close, false); //delegate to all alerts, including those inserted later into the DOM

    },

    actions : function() {

      var self = this;

      this.close = function(e) {

        var target = e.target;

        self.btn = target.getAttribute('data-dismiss') === 'alert' && target.className === 'close' ? target : target.parentNode;

        self.alert = self.btn.parentNode;

        if ( self.alert !== null && self.btn.getAttribute('data-dismiss') === 'alert' && /in/.test(self.alert.className) ) {

          self.alert.className = self.alert.className.replace(' in','');

          setTimeout(function() {

            self.alert && self.alert.parentNode.removeChild(self.alert);

          }, self.duration);

        }

      }

    }

    }

  // ALERT DATA API

  // =================

    var Alerts = document.querySelectorAll('[data-dismiss="alert"]'), i = 0, all = Alerts.length;

  for (i;i<all;i++) {

    new Alert(Alerts[i]);

  }

  return Alert;

});