0
我有一個窗體有兩個選擇區域和狀態，也有區域過濾狀態。我的腳本工作正常，但在IE8中，我有這個錯誤。爲什麼在IE8中發生此錯誤？選擇選項中的IE8錯誤
'0' 是無效或不是對象
如何解決這個？
這裏我的代碼：
<select id="regionId" name="region">
<option value="Central">Central</option>
<option value="Eastern">Eastern</option>
<option value="Northeastern">Northeastern</option>
<option value="Northern">Northern</option>
<option value="Southern">Southern</option>
<option value="Western">Western</option>
</select>
<select id="stateId" name="state">
</select>
<script type="text/javascript" >
$(document).ready(function() {
var countryStateArray = {
'Central': [
['', 'State/Territory'],
['Madhya Pradesh', 'Madhya Pradesh'],
['Chhattisgarh', 'Chhattisgarh'],
],
'Eastern': [
['', 'State/Territory'],
['Odisha', 'Odisha'],
['Bihar', 'Bihar'],
['West Bengal', 'West Bengal'],
['Jharkhand', 'Jharkhand'],
['Manipur', 'Manipur'],
['Mizoram', 'Mizoram'],
['Nagaland', 'Nagaland'],
['Tripura', 'Tripura'],
],
'Northeastern': [
['', 'State/Territory'],
['Arunachal Pradesh', 'Arunachal Pradesh.'],
['Assam', 'Assam'],
['Meghalaya', 'Meghalaya'],
['Sikkim', 'Sikkim'],
],
'Northern': [
['', 'State/Territory'],
['Uttar Pradesh', 'Uttar Pradesh'],
['Jammu and Kashmir++', 'Jammu and Kashmir++'],
['Himachal Pradesh', 'Himachal Pradesh'],
['Uttarakhand', 'Uttarakhand'],
['Punjab', 'Punjab'],
['Haryana', 'Haryana'],
['Delhi', 'Delhi'],
['Chandigarh', 'Chandigarh'],
],
'Southern': [
['', 'State/Territory'],
['Karnataka', 'Karnataka'],
['Andhra Pradesh', 'Andhra Pradesh'],
['Tamil Nadu', 'Tamil Nadu'],
['Telangana', 'Telangana'],
['Kerala', 'Kerala'],
['Puducherry', 'Puducherry'],
],
'Western': [
['', 'State/Territory'],
['Rajasthan', 'Rajasthan'],
['Maharashtra', 'Maharashtra'],
['Gujarat', 'Gujarat'],
['Goa', 'Goa'],
]
};
function setStates() {
var $country = $('#regionId');
var $state = $('#stateId');
var countryId = $country.val();
$state.empty();
if (countryStateArray[countryId]) {
for (var i = 0; i < countryStateArray[countryId].length; i++) {
var state = countryStateArray[countryId][i];
$('<option />', {
value: state[0],
text: state[1]
}).appendTo($state);
}
$state.show();
} else {
$state.empty().hide();
}
}
$('#regionId').change(setStates);
</script>