場景

在實現新增和編輯時，初次進入頁面需要顯示默認文字，監聽下拉框的改變的事件實現聯動，所以在新增時必須要讓其選擇。

實現

<select class="form-control" name="businessInitiator" ><option? id="yuanliaoInitiator" th:selected="${refundOrder != null && refundOrder.businessInitiator != null && refundOrder.businessInitiator? == '原料立庫'}" value="原料立庫"><span th:text="原料立庫"></span></option><option? id="qingjieInitiator" th:selected="${refundOrder != null && refundOrder.businessInitiator != null && refundOrder.businessInitiator? == '清潔車間'}" value="清潔車間"><span th:text="清潔車間"></span></option><option? id="zhengjiInitiator" th:selected="${refundOrder != null && refundOrder.businessInitiator != null && refundOrder.businessInitiator? == '正極車間'}" value="正極車間"><span th:text="正極車間"></span></option><option? id="fujiInitiator" th:selected="${refundOrder != null && refundOrder.businessInitiator != null && refundOrder.businessInitiator? == '負極車間'}" value="負極車間"><span th:text="負極車間"></span></option><option value="" disabled selected hidden>選擇退貨發起方</option></select>

效果

總結

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