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[英]How to get a list of Multiple Selected Items and output their Values as an Array using Javascript
[英]How to get multiple selected list items values in dropdown toggle?
需要在不删除以前加载的值的情况下获取下拉切换中的所有选定值,请帮助
const [selectedItem, setSelectedItem] = useState("Select...");
<Dropdown className="dropdown-groove">
<Dropdown.Toggle variant="outline-secondary " id="dropdown-basic">
{selectedItem}
<label className="dropdown-label">Dropdown label</label>
</Dropdown.Toggle>
<Dropdown.Menu>
<Dropdown.Item href="#/action-1">
{" "}
<Form.Check
onClick={(e) => {
setSelectedItem("List A");
e.stopPropagation();
}}
className="checkbox-groove"
inline
label="List Item 1"
name="group1"
type="checkbox"
/>{" "}
</Dropdown.Item>
<Dropdown.Item href="#/action-2">
{" "}
<Form.Check
onClick={(e) => {
setSelectedItem("List b");
e.stopPropagation();
}}
className="checkbox-groove"
inline
label="List Item 2"
name="group1"
type="checkbox"
/>{" "}
</Dropdown.Item>
</Dropdown.Menu>
</Dropdown>
您可以在第 6 行的 setState 之后声明一个函数
function toggleCheckbox(addItem) {
if (selectedItem.indexOf(addItem) < 0) {
setSelectedItem(`${selectedItem} ${addItem}`);
} else {
setSelectedItem(selectedItem.replace(addItem, ""));
}
}
并替换setSelectedItem("List A");
with toggleCheckbox("List A");
那么, List b & c 是相同的替换方式。
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