下图为官方代码，主要部分我写了一些注解
elementUI官方代码展示：
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<link
rel="stylesheet"
href="https://unpkg.com/element-ui/lib/theme-chalk/index.css" target="_blank" rel="external nofollow"
/>
</head>
<body>
<div id="app">
<el-autocomplete
v-model="state1"
placeholder="请输入内容"
:fetch-suggestions="querySearch"//el内置方法，调取建议输入列表
></el-autocomplete>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<script>
let vm = new Vue({
el: "#app",
data: {
state1: "",
restaurants: [],
},
methods: {
loadAll() {
return [
{ value: "三全鲜食（北新泾店）", address: "长宁区新渔路144号" },
{
value: "Hot honey 首尔炸鸡（仙霞路）",
address: "上海市长宁区淞虹路661号",
},
{
value: "新旺角茶餐厅",
address: "上海市普陀区真北路988号创邑金沙谷6号楼113",
},
{ value: "泷千家(天山西路店)", address: "天山西路438号" },
{
value: "胖仙女纸杯蛋糕（上海凌空店）",
address: "上海市长宁区金钟路968号1幢18号楼一层商铺18-101",
},
{ value: "贡茶", address: "上海市长宁区金钟路633号" },
{
value: "豪大大香鸡排超级奶爸",
address: "上海市嘉定区曹安公路曹安路1685号",
},
{
value: "茶芝兰（奶茶，手抓饼）",
address: "上海市普陀区同普路1435号",
},
{ value: "十二泷町", address: "上海市北翟路1444弄81号B幢-107" },
{ value: "星移浓缩咖啡", address: "上海市嘉定区新郁路817号" },
{ value: "阿姨奶茶/豪大大", address: "嘉定区曹安路1611号" },
{
value: "新麦甜四季甜品炸鸡",
address: "嘉定区曹安公路2383弄55号",
},
{
value: "Monica摩托主题咖啡店",
address: "嘉定区江桥镇曹安公路2409号1F，2383弄62号1F",
},
{
value: "浮生若茶（凌空soho店）",
address: "上海长宁区金钟路968号9号楼地下一层",
},
{
value: "NONO JUICE 鲜榨果汁",
address: "上海市长宁区天山西路119号",
},
{ value: "CoCo都可(北新泾店）", address: "上海市长宁区仙霞西路" },
{
value: "快乐柠檬（神州智慧店）",
address: "上海市长宁区天山西路567号1层R117号店铺",
},
{
value: "Merci Paul cafe",
address: "上海市普陀区光复西路丹巴路28弄6号楼819",
},
{
value: "猫山王（西郊百联店）",
address: "上海市长宁区仙霞西路88号第一层G05-F01-1-306",
},
{ value: "枪会山", address: "上海市普陀区棕榈路" },
{ value: "纵食", address: "元丰天山花园(东门) 双流路267号" },
{ value: "钱记", address: "上海市长宁区天山西路" },
{ value: "壹杯加", address: "上海市长宁区通协路" },
{
value: "唦哇嘀咖",
address:
"上海市长宁区新泾镇金钟路999号2幢（B幢）第01层第1-02A单元",
},
{
value: "爱茜茜里(西郊百联)",
address: "长宁区仙霞西路88号1305室",
},
{
value: "爱茜茜里(近铁广场)",
address:
"上海市普陀区真北路818号近铁城市广场北区地下二楼N-B2-O2-C商铺",
},
{
value: "鲜果榨汁（金沙江路和美广店）",
address: "普陀区金沙江路2239号金沙和美广场B1-10-6",
},
{
value: "开心丽果（缤谷店）",
address: "上海市长宁区威宁路天山路341号",
},
{
value: "超级鸡车（丰庄路店）",
address: "上海市嘉定区丰庄路240号",
},
{ value: "妙生活果园（北新泾店）", address: "长宁区新渔路144号" },
{ value: "香宜度麻辣香锅", address: "长宁区淞虹路148号" },
{
value: "凡仔汉堡（老真北路店）",
address: "上海市普陀区老真北路160号",
},
{
value: "港式小铺",
address: "上海市长宁区金钟路968号15楼15-105室",
},
{ value: "蜀香源麻辣香锅（剑河路店）", address: "剑河路443-1" },
{
value: "北京饺子馆",
address: "长宁区北新泾街道天山西路490-1号",
},
{
value: "饭典*新简餐（凌空SOHO店）",
address: "上海市长宁区金钟路968号9号楼地下一层9-83室",
},
{
value: "焦耳·川式快餐（金钟路店）",
address: "上海市金钟路633号地下一层甲部",
},
{ value: "动力鸡车", address: "长宁区仙霞西路299弄3号101B" },
{ value: "浏阳蒸菜", address: "天山西路430号" },
{
value: "四海游龙（天山西路店）",
address: "上海市长宁区天山西路",
},
{
value: "樱花食堂（凌空店）",
address: "上海市长宁区金钟路968号15楼15-105室",
},
{
value: "壹分米客家传统调制米粉(天山店)",
address: "天山西路428号",
},
{
value: "福荣祥烧腊（平溪路店）",
address: "上海市长宁区协和路福泉路255弄57-73号",
},
{
value: "速记黄焖鸡米饭",
address: "上海市长宁区北新泾街道金钟路180号1层01号摊位",
},
{ value: "红辣椒麻辣烫", address: "上海市长宁区天山西路492号" },
{
value: "(小杨生煎)西郊百联餐厅",
address: "长宁区仙霞西路88号百联2楼",
},
{ value: "阳阳麻辣烫", address: "天山西路389号" },
{
value: "南拳妈妈龙虾盖浇饭",
address: "普陀区金沙江路1699号鑫乐惠美食广场A13",
},
];
},
// queryString 是输入框里的内容
querySearch(queryString, callBack) {
let restaurants = this.restaurants;
// 要展示的建议列表，输入框为空就是展示所有建议列表，有匹配就展示匹配的内容
// filter(function(item,index,arr))
// filter方法里面的参数是函数
let results = queryString
? this.restaurants.filter(this.createFilter(queryString))
: restaurants;
callBack(results);
},
// createFilter返回的是一个函数
createFilter(queryString) {
return (restaurant) => {
// 输入框里输入的内容与建议列表有匹配的话，就是true，逐级返回
return (
restaurant.value
.toLowerCase()
.indexOf(queryString.toLowerCase()) === 0
);
};
},
},
mounted() {
this.restaurants = this.loadAll();
},
});
</script>
</body>
</html>
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