form表单填写，enter键实现tab键的下一个input获得焦点实现

1.表单填写，为了让客户输入更舒服

2.jquery实现

//功能：回车键实现tab键效果
jQuery(function () {
	 $('#noteDiv').on('keydown', 'input, select, textarea', function(e) {
    		    var self = $(this)
    		      , form = self.parents('form:eq(0)')
    		      , focusable
    		      , next
    		      ;
    		    if (e.keyCode == 13) {
    		        focusable = form.find('input,a,select,button,textarea').filter(':visible');
    		        next = focusable.eq(focusable.index(this)+1);
    		        if (next.length) {
    		            next.focus();
    		        } else {
    		            form.submit();
    		        }
    		        return false;
                     }
          });
});