Label attribute notes

• a tag

•  The target = "_ blank" in a tag means to open this webpage,

            The default is usually target = "_ self",

            <a href="http://www.baidu.com" target="_blank "> Baidu </a> (add a web page)

• name is to set a bookmark: <a name=”tips”> bookmark </a>

            <a href=”#tips”>跳转</a>

• <a href="javascript:;"> </a> Prevent the refresh of the page

•  iframe is an embedded webpage

 　      <iframe src="http://www.baidu.com" frameborder="0"></iframe>

•  ctrl slash (comment shortcut)

• img

• alt is the text displayed when the picture cannot be displayed
• src is the path,
  ./ in the path represents the directory where the file itself is located,
  ../ represents the parent directory where the file is located,

  ../../ represents the parent of the parent

   title is the prompt attribute. (Putting the mouse on the picture will display the text, and the prompt attribute is displayed)

   

  ol ordered list
  type is divided into 1, a, A, i, I ul unordered list
  type into disc, circle, square dl custom table listing tatble
  interbank combined rowspan = "merging several input several"
  across columns combined colspan = "Merge several input several"