标签分类

仅限于HTML 4.01

空标签，不存在innerHTML：

area,base,basefont,br,col,frame,hr,img,input,isindex,link,meta,param,embed,wbr

默认为块元素的标签：

address,applet,blockquote,button,center,dd,del,dir,div,dl,dt,fieldset,form,frameset,hr,h1,h2,h3,h4,h5,h6,iframe,ins,isindex,li,menu,noframes,noscript,ol,p,pre,script,table,tbody,td,tfoot,th,thead,tr,ul,xml

默认为内联元素的标签：

a,abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,textarea,tt,u,var

会自动闭合的标签：

colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr