code: function(options) {
          this.originHTML = this.$main.html();
  
          this.$main.addClass([defaultClass, options.customClass, prefix + options.theme].join(' '));
  
          if (options.size === 'large') {
              this.$main.addClass(largeClass);
          }
  
          if (options.text) {
              this.$main.html(options.text);
          }
  
          if (options.icon) {
              var iconName = !document.documentMode ? options.icon : window.bizui.codepoints[options.icon];
              this.$main.prepend('<i class="biz-icon">' + iconName + '</i> ');
          }
  
          if (options.disabled) {
              this.disable();
          }
      }
docs: 初始化
  @param {Object} options 参数
  @private