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我正在玩數據網格組件，並添加了一個新列，名爲cool這是一個布爾值。防止Vue 2重新渲染數組？
現在，如果我想按此列進行排序，並且如果在排序後更改值（單擊「不是真」），它會立即對數據進行重新排序，使行切換到不合需要的位置（它應該只發生在另一次點擊）。
是否有可能防止立即排序/保持vue重新呈現表？
我也讀過一些地方，Vue不會按索引註冊更改數組，但由於某種原因它不會here？
// register the grid component
Vue.component('demo-grid', {
template: '#grid-template',
props: {
data: Array,
columns: Array,
filterKey: String
},
data: function() {
var sortOrders = {}
this.columns.forEach(function (key) {
sortOrders[key] = 1
})
return {
sortKey: '',
sortOrders: sortOrders
}
},
computed: {
filteredData: function() {
var sortKey = this.sortKey
var filterKey = this.filterKey && this.filterKey.toLowerCase()
var order = this.sortOrders[sortKey] || 1
var data = this.data
if (filterKey) {
data = data.filter(function (row) {
return Object.keys(row).some(function (key) {
return String(row[key]).toLowerCase().indexOf(filterKey) > -1
})
})
}
if (sortKey) {
data = data.slice().sort(function (a, b) {
a = a[sortKey]
b = b[sortKey]
return (a === b ? 0 : a > b ? 1 : -1) * order
})
}
return data
}
},
filters: {
capitalize: function (str) {
return str.charAt(0).toUpperCase() + str.slice(1)
}
},
methods: {
sortBy: function (key) {
this.sortKey = key
this.sortOrders[key] = this.sortOrders[key] * -1
}
}
})
// bootstrap the demo
var demo = new Vue({
el: '#demo',
data: {
searchQuery: '',
gridColumns: ['name', 'power', 'cool'],
gridData: [
{ name: 'Chuck Norris', power: Infinity, cool: true },
{ name: 'Bruce Lee', power: 9000, cool: true },
{ name: 'Jackie Chan', power: 7000, cool: false },
{ name: 'Jet Li', power: 8000, cool: false }
]
},
methods: {
\t notTrue() {
\t this.gridData[0].cool = !this.gridData[0].cool;
}
}
})body {
font-family: Helvetica Neue, Arial, sans-serif;
font-size: 14px;
color: #444;
}
table {
border: 2px solid #42b983;
border-radius: 3px;
background-color: #fff;
}
th {
background-color: #42b983;
color: rgba(255,255,255,0.66);
cursor: pointer;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
td {
background-color: #f9f9f9;
}
th, td {
min-width: 120px;
padding: 10px 20px;
}
th.active {
color: #fff;
}
th.active .arrow {
opacity: 1;
}
.arrow {
display: inline-block;
vertical-align: middle;
width: 0;
height: 0;
margin-left: 5px;
opacity: 0.66;
}
.arrow.asc {
border-left: 4px solid transparent;
border-right: 4px solid transparent;
border-bottom: 4px solid #fff;
}
.arrow.dsc {
border-left: 4px solid transparent;
border-right: 4px solid transparent;
border-top: 4px solid #fff;
}<script src="https://unpkg.com/[email protected]/dist/vue.js"></script>
<!-- component template -->
<script type="text/x-template" id="grid-template">
<table>
<thead>
<tr>
<th v-for="key in columns"
@click="sortBy(key)"
:class="{ active: sortKey == key }">
{{ key | capitalize }}
<span class="arrow" :class="sortOrders[key] > 0 ? 'asc' : 'dsc'">
</span>
</th>
</tr>
</thead>
<tbody>
<tr v-for="entry in filteredData">
<td v-for="key in columns">
{{entry[key]}}
</td>
</tr>
</tbody>
</table>
</script>
<!-- demo root element -->
<div id="demo">
<form id="search">
Search <input name="query" v-model="searchQuery">
</form>
<demo-grid
:data="gridData"
:columns="gridColumns"
:filter-key="searchQuery">
</demo-grid>
<a @click="notTrue()">Not true</a>
</div>
我似乎不明白。你能否詳細說明一下？ – Runnick