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vue實(shí)現(xiàn)搜索功能

更新時(shí)間：2019年05月28日 08:36:28 作者：grylf

這篇文章主要為大家詳細(xì)介紹了vue實(shí)現(xiàn)搜索功能，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

本文實(shí)例為大家分享了vue實(shí)現(xiàn)搜索功能的具體代碼，供大家參考，具體內(nèi)容如下

methods (要有一定的觸發(fā)條件才能執(zhí)行，如點(diǎn)擊事件)

<template>
 <div class="safetyInfo">
 <input type="text" name="" id="" placeholder="搜索" v-model="search"/> 
 <button @click="btn">搜索</button>
 <ul v-for="list in searchData">
 <li>
  <span>{{list.name}}</span>
  <span>{{list.date}}</span>
  <span>{{list.depart}}</span>
 </li>
 </ul>
 </div>
</template>
 
<script>
export default {
 name: 'HelloWorld',
 data () {
 return {
  search:'',
  searchData: '',
 products:[
  //假數(shù)據(jù)
  {name:"數(shù)據(jù)1",date:'2018-01-04',depart:'瀘化工1'},
  {name:"數(shù)據(jù)2",date:'2018-01-25',depart:'瀘化工2'},
  {name:"數(shù)據(jù)3",date:'2018-02-10',depart:'瀘化工3'},
  {name:"數(shù)據(jù)4",date:'2018-03-04',depart:'瀘化工4'},
  {name:"數(shù)據(jù)5",date:'2018-05-24',depart:'瀘化工5'},
  {name:"數(shù)據(jù)6",date:'2018-10-29',depart:'瀘化工6'}
  ]
 }
 },
 methods:{
 btn:function(){
 
 var search = this.search;
 if (search) {
 this.searchData = this.products.filter(function(product) {
  console.log(product)
 return Object.keys(product).some(function(key) {
  console.log(key)
  return String(product[key]).toLowerCase().indexOf(search) > -1
 })
 })
 }
 
 }
 }
}
</script>

computed (在HTML DOM加載后馬上執(zhí)行的，如賦值):

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
 
<title>Document</title>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
</head>
<body>
 
<div id="app">
<input v-model='search' />
<ul v-for="item in searchData ">
<li>{{item.name}},價(jià)格:￥{{item.price}}</li>
</ul>
</div>
 
 
<script>
var vm = new Vue({
el: '#app',
data: {
search: '',
products: [{
name: '蘋果',
price: 25,
category: "水果"
}, {
name: '香蕉',
price: 15,
category: "水果"
}, {
name: '雪梨',
price: 65,
category: "水果"
}, {
name: '寶馬',
price: 2500,
category: "汽車"
}, {
name: '奔馳',
price: 10025,
category: "汽車"
}, {
name: '柑橘',
price: 15,
category: "水果"
}, {
name: '奧迪',
price: 25,
category: "汽車"
}]
},
computed: {
searchData: function() {
var search = this.search;
 
if (search) {
return this.products.filter(function(product) {
return Object.keys(product).some(function(key) {
return String(product[key]).toLowerCase().indexOf(search) > -1
})
})
}
 
return this.products;
}
}
})
</script>
 
 
</body>
</html>

注：some()為數(shù)組中的每個(gè)元素執(zhí)行一次callback函數(shù)，直到它找到一個(gè)返回值為可以轉(zhuǎn)化為布爾值true的值,此時(shí)some()方法將立刻返回true，否則立刻返回false

by the way:

watch 它用于觀察Vue實(shí)例上的數(shù)據(jù)變動(dòng)。對(duì)應(yīng)一個(gè)對(duì)象，鍵是觀察表達(dá)式，值是對(duì)應(yīng)回調(diào)。值也可以是方法名，或者是對(duì)象，包含選項(xiàng)。

所以他們的執(zhí)行順序?yàn)椋耗J(rèn)加載的時(shí)候先computed再watch，不執(zhí)行methods；等觸發(fā)某一事件后，則是：先methods再watch。

以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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