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				@@ -1,6 +1,6 @@ 
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				 import { defineComponent, onMounted, reactive } from "vue"; 
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				 import styles from "./index.module.less"; 
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				-import { Button } from "vant"; 
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				+import { Button, showToast } from "vant"; 
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				 export default defineComponent({ 
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				   name: "change-subject", 
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				@@ -106,6 +106,10 @@ export default defineComponent({ 
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				             round 
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				             color="linear-gradient(90deg, #44C9FF 0%, #259CFE 100%)" 
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				             onClick={() => { 
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				+              if (state.selectList.length > 0 && !state.instrumentCode) { 
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				+                showToast("请选择乐器"); 
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				+                return; 
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				+              } 
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				               emit("confirm", state.instrumentCode || state.subjectValue); 
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				             }} 
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				           > 
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