我试图通过单击不同的div或表行来在选择框上选择多个选项。
我有一个名为#events的多重选择。
我正在使用下面的代码,该代码可以通过简单的selectbox
来使用,而不能使用多个代码。
$("td.eventID").on("click", function(e) {
var $select = $("select#events");
$select.val($(this).data("value"));
// simulate click:
$select.find(":selected").click();
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tbody>
<tr>
<td class="eventID" data-value="1" style="cursor:pointer;">
FirstEventName
</td>
</tr>
<tr>
<td class="eventID" data-value="11" style="cursor:pointer;">
EV_Hildegard Spinka
</td>
</tr>
<tr>
<td class="eventID" data-value="14" style="cursor:pointer;">
EV_Melody Parker
</td>
</tr>
<tr>
<td class="eventID" data-value="4" style="cursor:pointer;">
EV_Theodore Auer
</td>
</tr>
<tr>
<td class="eventID" data-value="17" style="cursor:pointer;">
EV_Aditya Stracke
</td>
</tr>
</tbody>
</table>
<select name="events[]" id="events" class="form-control" multiple="" required="">
<option value="1">FirstEventName</option>
<option value="14">EV_Melody Parker</option>
<option value="4">EV_Theodore Auer</option>
<option value="17">EV_Aditya Stracke</option>
<option value="11">EV_Hildegard Spinka</option>
</select>
答案 0 :(得分:1)
您可以用> library(Metrics)
> library(MASS)
>
> data("iris")
>
> head(iris)
Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1 5.1 3.5 1.4 0.2 setosa
2 4.9 3.0 1.4 0.2 setosa
3 4.7 3.2 1.3 0.2 setosa
4 4.6 3.1 1.5 0.2 setosa
5 5.0 3.6 1.4 0.2 setosa
6 5.4 3.9 1.7 0.4 setosa
>
> iris$setosa <- 0
> iris$setosa[iris$Species == "setosa"] <- 1
> iris_lda <- lda(setosa ~ Sepal.Length + Sepal.Width, iris)
>
> table(predict(iris_lda)$class)
0 1
101 49
> table(iris$setosa)
0 1
100 50
>
> accuracy(iris$setosa, predict(iris_lda)$class)
[1] 0.9933333
>
> precision(iris$setosa, predict(iris_lda)$class)
[1] 1
>
> recall(iris$setosa, as.numeric(as.character(predict(iris_lda)$class)))
[1] 0.98
之类的逗号,
分隔多个值,然后在选择它们时将它们分割。
注意::要以编程方式选择选项后要更新视图,可以使用data-value="books,html"
.change()
$(".eventID").on("click", function(e) {
$("#events").val($(this).data("value").split(',')).change();
});
答案 1 :(得分:0)
我已解决,这要感谢 Zakaria Acharki的回答。但是,我不知道这是否是最好的解决方案,但是它可以按我的意愿工作。
我添加了一个隐藏的输入,它将接收我要选择的所有值。
之后,我对JS代码进行了一些更改,并添加了一个新代码。
// This code add values to the hidden input with "," and then, selecting every value on multiple select
$("td.eventID").on("click", function(e) {
var group = $('#groupingEvents');
var groupValues = group.val();
if(groupValues == "") {
group.val($(this).data("value") + ',');
} else
group.val(groupValues + $(this).data("value"));
$("#events").val(group.val().split(',')).change();
});
// This code is used if you click the selectbox to choose a new option, you need to send values to hidden input, otherwise, a bug appears.
$("#events").on("click", function() {
var group = $('#groupingEvents');
var selectValues = $(this).val();
if(group.val() == "") {
group.val(selectValues.join(","));
} else
group.val(selectValues.join(",") + ',')
});
$("td.eventID").on("click", function(e) {
var group = $('#groupingEvents');
var groupValues = group.val();
if(groupValues == "") {
group.val($(this).data("value") + ',');
} else
group.val(groupValues + $(this).data("value"));
$("#events").val(group.val().split(',')).change();
});
$("#events").on("click", function() {
var group = $('#groupingEvents');
var selectValues = $(this).val();
if(group.val() == "") {
group.val(selectValues.join(","));
} else
group.val(selectValues.join(",") + ',')
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table>
<tbody>
<tr>
<td class="eventID" data-value="1" style="cursor:pointer;">
FirstEventName
</td>
</tr>
<tr>
<td class="eventID" data-value="11" style="cursor:pointer;">
EV_Hildegard Spinka
</td>
</tr>
<tr>
<td class="eventID" data-value="14" style="cursor:pointer;">
EV_Melody Parker
</td>
</tr>
<tr>
<td class="eventID" data-value="4" style="cursor:pointer;">
EV_Theodore Auer
</td>
</tr>
<tr>
<td class="eventID" data-value="17" style="cursor:pointer;">
EV_Aditya Stracke
</td>
</tr>
</tbody>
</table>
<input type="hidden" id="groupingEvents" value="">
<select name="events[]" id="events" class="form-control" multiple="" required="">
<option value="1">FirstEventName</option>
<option value="14">EV_Melody Parker</option>
<option value="4">EV_Theodore Auer</option>
<option value="17">EV_Aditya Stracke</option>
<option value="11">EV_Hildegard Spinka</option>
</select>