我需要你的帮助。
在现有 javascript 专家的帮助下，我能够创建一个表格，用户可以在其中滚动(使用向上和向下箭头键)，并允许用户单击一行来选择并突出显示它。
现在我想修改现有的函数，以便每当用户单击或使用箭头键导航到表中的选定行时，我都想从行并使用它来填充下面的输入框列表。如何修改 JavaScript 编码才能允许我执行此操作？
<!DOCTYPE html>
<html>
<head>
<style type="text/css">
#mstrTable tr.normal td {
color: #235A81;
background-color: white;
}
#mstrTable tr.highlighted td {
color: #FFFFFF;
background-color: #235A81;
}
</style>
<script type='text/javascript'>
function test() {
var table = document.getElementById("mstrTable");
var thead = table.getElementsByTagName("thead")[0];
var tbody = table.getElementsByTagName("tbody")[0];
var ishigh;
tbody.onclick = function (e) {
e = e || window.event;
var td = e.target || e.srcElement
var row = td.parentNode;
if (ishigh&&ishigh!=row){
ishigh.className='';
}
row.className = row.className==="highlighted" ? "" : "highlighted";
ishigh=row;
}
document.onkeydown = function(e){
e = e || event;
var code = e.keyCode, rowslim = table.rows.length - 2, newhigh;
if(code === 38){ //up arraow
newhigh = rowindex(ishigh) - 2;
if(!ishigh || newhigh < 0){return GoTo('mstrTable', rowslim);}
return GoTo('mstrTable', newhigh);
} else if (code === 40){ //down arrow
newhigh = rowindex(ishigh);
if(!ishigh || newhigh > rowslim){return GoTo('mstrTable', 0);}
return GoTo('mstrTable', newhigh);
}
}
function GoTo(id,nu){
var obj=document.getElementById(id),
trs=obj.getElementsByTagName('TR');
nu = nu + 1;
if (trs[nu]){
if (ishigh&&ishigh!=trs[nu]){
ishigh.className='';
}
trs[nu].className = trs[nu].className=="highlighted" ? "" : "highlighted";
ishigh=trs[nu];
}
}
function rowindex(row){
var rows = table.rows, i = rows.length;
while(--i > -1){
if(rows[i] === row){return i;}
}
}
}//end of nested function
</script>
</head>
<body>
<table id="mstrTable" cellspacing="1" border="1">
<thead>
<tr>
<th>first name</th>
<th>last name</th>
<th>age</th>
<th>total</th>
<th>discount</th>
<th>diff</th>
</tr>
</thead>
<tbody>
<tr>
<td>peter</td>
<td>parker</td>
<td>28</td>
<td>9.99</td>
<td>20.3%</td>
<td>+3</td>
</tr>
<tr>
<td>john</td>
<td>hood</td>
<td>33</td>
<td>19.99</td>
<td>25.1%</td>
<td>-7</td>
</tr>
<tr>
<td>clark</td>
<td>kent</td>
<td>18</td>
<td>15.89</td>
<td>44.2%</td>
<td>-15</td>
</tr>
<tr>
<td>bruce</td>
<td>almighty</td>
<td>45</td>
<td>153.19</td>
<td>44%</td>
<td>+19</td>
</tr>
<tr>
<td>bruce</td>
<td>evans</td>
<td>56</td>
<td>153.19</td>
<td>23%</td>
<td>+9</td>
</tr>
</tbody>
</table>
<br>
Firstname is:
<input type="text" id="firstname" />
<br>Lastname is:
<input type="text" id="lastname" />
<br>Age is:
<input type="text" id="age" />
<br>Total is:
<input type="text" id="total" />
<br>Discount is:
<input type="text" id="discount" />
<br>Diff is:
<input type="text" id="diff" />
<br>
<input type="button" value="testme" onclick="test()">
</body>
</html>
最佳答案
您可以编写另一个函数来填充必要的字段。示例:
function populateFields(row) {
el('firstname').value = row.cells[0].innerHTML;
el('lastname').value = row.cells[1].innerHTML;
el('age').value = row.cells[2].innerHTML;
el('total').value = row.cells[3].innerHTML;
el('discount').value = row.cells[4].innerHTML;
el('diff').value = row.cells[5].innerHTML;
}
// el() is shortcut for document.getElementById
将相应行传递给函数以从中获取数据的位置。
关于javascript - 根据表中单击/滚动的行填充输入框，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17998495/