这些值是通过JS放置的,我对此很执迷。我试图访问public void onBindViewHolder(MyViewHolder vh, int index)
{
int row = index % myArray.getHeight();
int col = index / myArray.getHeight();
if (myArray[row][col].isValid())
{
img.setImageResource(R.drawable.check);
}
else
{
img.setImageResource(R.drawable.nocheck);
}
}
元素的值,但无济于事。如何获取值?
.id
答案 0 :(得分:1)
箭头函数表达式的语法比函数表达式短,并且没有自己的
this
,arguments
,super
或new.target
。这些函数表达式最适合非方法函数,因此不能用作构造函数。
您可以使用普通的函数语法:
// click function
$('.delete').click(function() {
let id = $(this).next('.id').text();
console.log(id);
})
.delete{background-color: lightgray}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr class="tablerow">
<td class="delete"> Delete </td>
<td class="id">Some Text</td>
</tr>
<tr class="tablerow">
<td class="delete"> Delete </td>
<td class="id">Some Text2</td>
</tr>
<table>
您仍然可以通过将event
传递给箭头功能来使用箭头功能,以便可以使用target
属性来引用当前元素:
// click function
$('.delete').click((e) => {
let id = $(e.target).next('.id').text();
console.log(id);
})
.delete{background-color: lightgray}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr class="tablerow">
<td class="delete"> Delete </td>
<td class="id">Some Text</td>
</tr>
<tr class="tablerow">
<td class="delete"> Delete </td>
<td class="id">Some Text2</td>
</tr>
<table>
答案 1 :(得分:0)
尝试一下。
$('.delete').click(function(){
let id = $(this).closest('tr').find('.id').text();
console.log(id)
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
<tr class="tablerow">
<td class="delete"> delete</td>
<td class="id">1</td>
</tr>
<tr class="tablerow">
<td class="delete">delete</td>
<td class="id">2</td>
</tr>
<tr class="tablerow">
<td class="delete">delete </td>
<td class="id">3</td>
</tr>
</table>
答案 2 :(得分:-1)
如果我理解正确,则您正在尝试访问类id
的表单元格。您可以这样做
$('.delete').click(() =>{
let id = $(this).closest('td');
})