meteor-ionic/components/ionNavBackButton/ionNavBackButton.js

Template.ionNavBackButton.events({
  'click': function (event) {
    $('[data-nav-container]').addClass('nav-view-direction-back');
    $('[data-navbar-container]').addClass('nav-bar-direction-back');
    // window.history.back();
  }
});

Template.ionNavBackButton.helpers({
  classes: function () {
    var classes = ['buttons button button-clear back-button pull-left'];

    if (this.class) {
      classes.push(this.class);
    }

    return classes.join(' ');
  },

  icon: function () {
    if (this.icon) {
      return this.icon;
    } else {
      return 'ios-arrow-back';
    }
  },

  text: function () {
    if (this.text) {
      return this.text;
    } else if(this.text !== false) {
      return 'Back';
    }
  },

  url: function () {
    if (this.href) {
      return this.href;
    }

    if (this.path) {
      return Router.routes[this.path].path(Template.parentData(1));
    }
  }
});