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行内元素和块级元素有什么区别?语义化作用
2022-07-28 20:15:00 【大鸡腿最好吃】
常见的行内元素
a,span,input,img
img,input为特殊的行内元素,可以设置宽高
常用的块级元素
div,h1-h6,p,ul,li,form
区别
行内元素不换行,宽高不可以设置,只能让他的子元素撑起来,内边距和外边距只在水平方向有效(对它周围的元素产生影响),内边距垂直方向显示效果增加,位置上不会有改变
块级元素自动换行,可以设置宽高,可以设置 margin
、padding
display:inline块级转行内
display;block 行内转块级
display:inline-block
行内元素或块级元素转行内块元素
语义化作用
- 对于编写代码的人来说,有语义化标签的HTML的结构,更加清晰,方便编写代码;
- 对于团队来说,方便团队的开发与维护;
- 对于浏览器,更加方便解析,
- 对于爬虫,有利于SEO;
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