jQuery.fn.dataset = function(attr, val) {
    // 获取数据集
    if (arguments.length == 0) {
      var dataset = {};
      jQuery(this).eq(0).each(function() {
        var attrs = this.attributes;
        for (var i = 0, l = attrs.length; i < l; i++) {
          var attr = attrs[i];
          if (/^data-/i.test(attr.name)) {
            dataset[decode(encode(attr.name.substring(5)))] = autobox(attr.value);
            if (decode(encode(attr.name.substring(5))) == "path") {
              dataset[decode(encode(attr.name.substring(5)))] = attr.value != null "name") {
              dataset[decode(encode(attr.name.substring(5)))] = attr.value != null "data-path"){
        return this.attr(encode(attr));
      }
      return autobox(this.attr(encode(attr)));
    }

    // 设置数据集
    var dataset = attr;
    if (typeof attr != 'object') {
      dataset = {};
      dataset[attr] = String(val);
    }
    var tmp = {};
    jQuery.each(dataset, function(k, v) {
      tmp[encode(k)] = autobox(v);
    });
    return this.attr(tmp);
  };

$("div").dataset("name") //获取data-name的值

$("div").dataset("name","Tezml") //给data-name这个属性赋值为Tezml