根据问题标题，我在我的angular 7项目中将ngx-bootstrap与bootstrap4一起使用。
当前，我已经应用了typeahed的分组功能，当我使用键盘上的向上箭头键滚动时会出现问题。
我做了很多尝试和许多解决方案，但是没有用。
还检查了valx-soft站点的ngx-bootstrap，那里也存在问题。
您可以通过添加滚动查看以下链接中的问题： 去 https://valor-software.com/ngx-bootstrap/#/typeahead 查找分组，然后打开stackblitz进行分组提前输入。
在上面的stackblitz示例中的grouping.html>输入标签内添加以下两行：
async alertDisplay() {
const {value: formValues} = await this.$swal.fire({
title: 'Create private customer',
html: '<input id="swal-input1" class="swal2-input" placeholder="Customer Number">' +
'<select id="swal-input2" class="swal2-input"> <option value="fi_FI">fi_FI</option> <option value="sv_SE">sv_SE</option> </select>'
+
'<input id="swal-input3" class="swal2-input" placeholder="regNo">' +
'<input v-model="createdCustomer.address.street" id="swal-input4" class="swal2-input" placeholder="Address (street)">' +
'<input v-model="createdCustomer.address.city" id="swal-input5" class="swal2-input" placeholder="Address (city)">' +
'<input v-model="createdCustomer.address.country" id="swal-input6" class="swal2-input" placeholder="Address (country)">' +
'<input v-model="createdCustomer.address.region" id="swal-input7" class="swal2-input" placeholder="Address (region)">' +
'<input v-model="createdCustomer.address.zipCode" id="swal-input8" class="swal2-input" placeholder="Address (zipCode)">' +
'<input id="swal-input9" class="swal2-input" placeholder="First Name">' +
'<input id="swal-input10" class="swal2-input" placeholder="Last Name">'
,
focusConfirm: false,
preConfirm: () => {
return [
document.getElementById('swal-input1').value,
document.getElementById('swal-input2').value,
document.getElementById('swal-input3').value,
document.getElementById('swal-input4').value,
document.getElementById('swal-input5').value,
document.getElementById('swal-input6').value,
document.getElementById('swal-input7').value,
document.getElementById('swal-input8').value,
document.getElementById('swal-input9').value,
document.getElementById('swal-input10').value
]
}
})
if (formValues) {
this.createdCustomer = formValues;
console.log('the content of this.createdCustomer');
console.log(this.createdCustomer);
console.log('the content of this.createdCustomer.address');
console.log(this.createdCustomer.address);
}
}