我有一个5列的表格:
<script>
function function1() {
document.all.myTD.bgColor = "green";
}
function function2() {
document.all.myTD.bgColor = "grey";
}
</script>
<tr>
<th>aircrift type</th>
<th >registration</th>
<th >arrival time</th>
<th>departure time</th>
<th>actions</th>
</tr>
<tr>
<td>aircrift type</td>
<td >registration</td>
<td id="myTD">arrival time</td>
<td>departure time</td>
<td><select> <option onclick="function1()">airborne</option><option onclick="function2()">airborne</option></select></th>
</tr>
在此示例中,我需要在下拉菜单中插入一些操作。例如:如果飞机是空中飞机,我需要到达时间盒变成绿色,如果飞机降落为灰色。
我想为每一行创建此函数,然后将其保存到phpmyadmin DB。
最佳答案
如注释中所述-option
元素本身不会触发或接收事件-它们会传递给父元素,因此要在select
标记上分配事件侦听器。
如果将event
和值传递给事件处理程序,则可以通过将树向上引用到父级并向下引用到特定单元格(例如,如下所示的parentNode.parentNode),很容易地在特定单元格上设置所需的颜色。
<table>
<tr>
<th>aircrift type</th>
<th>registration</th>
<th>arrival time</th>
<th>departure time</th>
<th>actions</th>
</tr>
<tr>
<td>Boeing 747</td>
<td>BA747-01KDS</td>
<td>18:30</td>
<td>16:30</td>
<td>
<select name='aircraft-state' onchange='setcolour(event,this.value)'>
<option selected>Please Select
<option value='airborne'>Airborne
<option value='landed'>Landed
<option value='boarding'>Boarding
<option value='fuelling'>Fuelling
<option value='changeover'>Changeover
</select>
</td>
</tr>
<tr>
<td>Airbus A380</td>
<td>KLM380-FD76</td>
<td>19:45</td>
<td>15:00</td>
<td>
<select name='aircraft-state' onchange='setcolour(event,this.value)'>
<option selected>Please Select
<option value='airborne'>Airborne
<option value='landed'>Landed
<option value='boarding'>Boarding
<option value='fuelling'>Fuelling
<option value='changeover'>Changeover
</select>
</td>
</tr>
<tr>
<td>A10 Warthog</td>
<td>WB-USAF-0034</td>
<td>20:00</td>
<td>19:20</td>
<td>
<select name='aircraft-state' onchange='setcolour(event,this.value)'>
<option selected>Please Select
<option value='airborne'>Airborne
<option value='landed'>Landed
<option value='boarding'>Boarding
<option value='fuelling'>Fuelling
<option value='changeover'>Changeover
</select>
</td>
</tr>
</table>
<script>
function setcolour(e,v){
e.preventDefault();
var tr = e.target.parentNode.parentNode;
switch( v ){
case 'airborne':
tr.childNodes[3].style.backgroundColor='green';
break;
case 'landed':
tr.childNodes[3].style.backgroundColor='gray';
break;
case 'boarding':
tr.childNodes[3].style.backgroundColor='red';
break;
case 'fuelling':
tr.childNodes[3].style.backgroundColor='yellow';
break;
case 'changeover':
tr.childNodes[3].style.backgroundColor='purple';
break;
}
}
</script>
如果您希望根据所选值设置整个行颜色,则可以将上面的相关行更改为:
tr.style.backgroundColor='<COLOUR>';
关于javascript - 具有特定单元格功能的下拉菜单,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/44807482/