购物车-删除单行商品-HTMLTableElement.deleteRow()

wta

问题发源的代码：

/*删除单行商品*/
function deleteRow(rowId){
	var Index=document.getElementById(rowId).rowIndex; //获取当前行的索引号
	document.getElementById("shopping").deleteRow(Index);
	document.getElementById("shopping").deleteRow(Index-1);
	productCount();
	}

https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableRowElement/rowIndex
https://developer.mozilla.org/en-US/docs/Web/API/HTMLTableRowElement/rowIndex

 <table>
     <tr>
         <td>w3434</td>
         <td>w35566</td>
         <td>w65656</td>
     </tr>
     <tr>
         <td>w1ewewe</td>
         <td>w1fdgfge</td>
         <td>w1sdf</td>
     </tr>
     <tr>
         <td>w2dffdfgfd</td>
         <td>w2ffg</td>
         <td>w2yc</td>
     </tr>
     <tr>
         <td>w3qwe</td>
         <td>w3f</td>
         <td>w3gfg</td>
     </tr>
 </table>

 <script>
     var wrows = document.getElementsByTagName('tr')
     for (var w = 0, wlen = wrows.length; w < wlen; w++) {
         console.log(wrows[w])
         console.log(wrows[w].rowIndex)
     }
     // document.getElementsByTagName('table').deleteRow(1)
     //Uncaught TypeError: document.getElementsByTagName(...).deleteRow is not a function
     document.getElementsByTagName('table')[0].deleteRow(1)

 </script>

 <table>
     <tr>
         <td>w3434</td>
         <td>w35566</td>
         <td>w65656</td>
     </tr>
     <tr>
         <td>w1ewewe</td>
         <td>w1fdgfge</td>
         <td>w1sdf</td>
     </tr>
     <tr>
         <td>w2dffdfgfd</td>
         <td>w2ffg</td>
         <td>w2yc</td>
     </tr>
     <tr>
         <td>w3qwe</td>
         <td>w3f</td>
         <td>w3gfg</td>
     </tr>
 </table>
 <table>
     <tr>
         <td>wwwwww3434</td>
         <td>www35566</td>
         <td>www65656</td>
     </tr>
     <tr>
         <td>www1ewwwewwwe</td>
         <td>www1fdgfge</td>
         <td>www1sdf</td>
     </tr>
     <tr>
         <td>www2dffdfgfd</td>
         <td>www2ffg</td>
         <td>www2yc</td>
     </tr>
     <tr>
         <td>www3qwwwe</td>
         <td>www3f</td>
         <td>www3gfg</td>
     </tr>
 </table>

 <script>
     var wtabs = document.getElementsByTagName('table')
     for (var w = 0, wlen = wtabs.length; w < wlen; w++) {
         console.log(wtabs[w])
         console.log(wtabs[w].tabIndex)//-1
     }

 </script>