（1）模板方案
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
</head>
<body><!-- 输入框模糊搜索 --><div id="box"><input type="text" v-model="mytext"/><ul><template v-for="item in dataList" :key="item"><li v-if="item.includes(mytext)">{{ item }}</li></template></ul></div><script>var obj = {data(){return {mytext:'',dataList:['aaa','abc','acb','add','abb','acc','bca','cca','bba','ccc','bbb'],}}}Vue.createApp(obj).mount('#box')</script>
</body>
</html>（2）复制方案 （浪费内存不优雅）
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
</head>
<body><!-- 输入框模糊搜索 --><div id="box"><input type="text" v-model="mytext"/ @input="handleInput"><ul><template v-for="item in dataList" :key="item"><!-- <li v-if="item.includes(mytext)">{{ item }}</li> --><li>{{item}}</li></template></ul></div><script>var obj = {data(){return {mytext:'',dataList:['aaa','abc','acb','add','abb','acc','bca','cca','bba','ccc','bbb'],baklist:['aaa','abc','acb','add','abb','acc','bca','cca','bba','ccc','bbb'] // 复制data}},methods:{handleInput(){this.dataList = this.baklist.filter(item=>item.includes(this.mytext))}}}Vue.createApp(obj).mount('#box')</script>
</body>
</html>（3）函数表达式
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title><script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
</head>
<body><!-- 输入框模糊搜索 --><div id="box"><input type="text" v-model="mytext"/><ul><template v-for="item in test()" :key="item"><li>{{ item }}</li></template></ul></div><script>var obj = {data(){return {mytext:'',dataList:['aaa1','abc','acb','add','abb','acc','bca','cca','bba','ccc','bbb','aac','aab'],}},methods:{test(){return this.dataList.filter(item=>item.includes(this.mytext))}}}Vue.createApp(obj).mount('#box')</script>
</body>
</html>（4）watch监听
（5）计算属性
