tab切换

说明：

　　

html 部分：

  <div>
      <ul class="tab-nav-box tp-tab tp-tab01" data-content=".tab-content-box-3">
          <a class="tab-item active" href="javascript:void(0)">tab1</a>
          <a class="tab-item" href="javascript:void(0)">tab2</a>
          <a class="tab-item" href="javascript:void(0)">tab3</a>
      </ul>
        <div class="tab-box tab-content-box-1">
          <div class="content-item active">content tab1</div>
          <div class="content-item">content tab2</div>
          <div class="content-item">content tab3</div>
        </div>
    </div>

js 部分/*

 * @name        tab.js tab切换功能

 */
 define(function(require, exports, module) {
     // 通过 require 引入依赖
     // var bind = require('../common/bind.js');
    //找到页面上data-role =tab元素
    var Tab = function(ele,config){
        this.cfg = $.extend({
           trigger:'touchend',
           index:0, // 默认选中的索引项
           content: '.tab-content-box'
        }, config);
        this.init(ele);
    };
    Tab.prototype = {
        constructor:Tab,
        init: function(ele){
          var self = this;
          this.$ele = ele;

          this.$content = $(self.$ele.data("content") || self.cfg.content);
          this.renderTab();
          this.event();
        },
        renderTab:function(){
          var self = this;
          this.$ele.children().eq(self.cfg.index).addClass('active');
          this.$content.children().eq(self.cfg.index).addClass('active');
        },
        event:function(){
          var self = this;
          self.$ele.on(self.cfg.trigger, '.tab-item', function(){

            var _this = $(this);
            if(_this.hasClass('active')) return;
            _this.addClass('active').siblings().removeClass('active');
            self.$content.children().removeClass('active').eq(_this.index()).addClass('active');
          })
        }
    }
    $.extend($.fn,{
        tab:function(config){
            return new Tab($(this), config || {});
        }
    });
    module.exports = $;
 })