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历届学生/韩想/项目开发/练习项目/仿美食/Think/点餐/Vue/1.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+</head>
+<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
+
+<body>
+    <div class="dd">
+        <h2>{{hello}}</h2>
+    </div>
+</body>
+<script>
+    vm =  new Vue(
+        {
+            el:'.dd',
+            data:{
+                hello:'11'
+            },
+            methods:{
+
+            },
+            watch:{
+                hello(ntest,otest){
+                    console.log("ntest",ntest);
+                    console.log("otest",otest);
+                }
+            },
+            computed:{
+                // test(){
+                    
+                // }
+            }
+        }
+    )
+</script>
+</html>