📅  最后修改于: 2022-03-11 15:03:18.877000             🧑  作者: Mango
$('select').on('change', function () {
var subcategories = '';
var str = "This category contains these subcategories: ";
var result = str.bold();
switch (this.value) {
case 'Category 1':
subcategories = "Subcategory 1.1, Subcategory 1.2";
break;
case 'Category 2':
subcategories = "Subcategory 2.1, Subcategory 2.2";
break;
case 'Category 3':
subcategories = "Subcategory 3.1, Subcategory 3.2";
break;
case 'Category 4':
subcategories = "Subcategory 4.1, Subcategory 4.2";
break;
}
document.getElementById("showSubcategory").innerHTML = result + subcategories;
});