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>