下拉菜单id=付款_方法
- 收款人支付
- 通过发票收费
下拉菜单id=shipping_carrier
- 联邦快递
- DHL
输入字段id=发货_编号__________________
目标：
如果用户选择通过发票收费
- 禁用shipping_carrier
- 将Fedex设置为默认值
- hide（）我的发货号输入
否则，
- 启用shipping_carrier
- 启用运输编号输入（必需）
代码
<script>
var logistic = function () {
if ($( "#payment_method option:selected" ).text("Charge through invoices")) {
$('#shipping_carrier').prop('disabled', false);
else {
$('#shipping_carrier').prop('disabled', 'disabled');
}
};
$(logistic);
$("#paid_by_reciever").change(logistic);
</script>
开始：
$("#payment_method").change(function() {
console.log($("#payment_method option:selected").val());
if ($("#payment_method option:selected").val() == 2) {
$('#shipping_carrier').prop('disabled', 'disabled');
$('#shipping_carrier').val(1);
$('#shipping_number').hide();
} else {
$('#shipping_carrier').prop('disabled', false);
$('#shipping_number').show();
}
});label {
display: block;
margin-bottom: 10px;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<label>
Payment method: <br />
<select id="payment_method" name="payment_method">
<option value="1">paid by reciever</option>
<option value="2">charge through invoices</option>
</select>
</label>
<label>
Shipping Carrier
<select id="shipping_carrier" name="shipping_carrier">
<option value="1">Fedex</option>
<option value="2">DHL</option>
</select><br />
</label>
<label>
Shipping number<br />
<input type="text" name="shipping_number" id="shipping_number" value="" />
</label>