在该示例中，如何使用外部JSON文件替换“图像”数据数组？基本上，我想使用axios从外部获取/获取此数据，但是在此示例中，某些操作尚不完善。任何线索都非常感谢！
如果您喜欢这样看的话，我还为该示例创建了一个CodePen，它无需外部引用即可工作。非常感谢！ https://codepen.io/FloydGekko/pen/eLoRBQ
这是html，css和vue.js代码：
<head>
<style>
[v-cloak] {
display: none;
}
.imageBlock{
width:100%;
margin:10px;
}
div.polaroid {
width:310px;
height:440px;
margin:10px;
background-color: white;
box-shadow: 6px 4px 8px 0 rgba(0, 0, 0, 0.2), 6px 6px 20px 0 rgba(0, 0, 0, 0.19);
margin-bottom: 25px;
border-radius: 18px
}
div.container {
text-align: center;
padding: 10px 20px;
}
</style>
</head>
<body>
<div id="vue" v-cloak>
<h2 align="center">
Show
<select v-model="currentKind" @change="onChange">
<option v-for="kind, index in kinds" :value="kind" :key="`kind_${index}`">{{kind ? kind : 'kind...'}}</option>
</select>
<select v-model="currentColor" @change="onChange">
<option v-for="color, index in colors" :value="color" :key="`kind_${index}`">{{color ? color : 'color...'}}</option>
</select>
and
<select v-model="currentShape" @change="onChange">
<option v-for="shape, index in shapes" :value="shape" :key="`kind_${index}`">{{shape ? shape : 'shape...'}}</option>
</select>
</h2>
<isotope
id="root_isotope"
ref="isotope"
:options='options'
:list="images"
align="center">
<div class="polaroid" align="center"
v-for="(image, index) in images"
class="imageBlock"
:key="image.id">
<a target="_blank" :href="image.url"><img border="0" :src="image.pic" alt=""
style="
border-radius: 20px;
display: block;
margin-left: auto;
margin-right: auto;
width: 100%;">
</a>
<div class="container">
<a target="_blank" :href="image.url">
<h3 align="center">{{image.title}}</h3>
</a>
<!--<h1>{{image.kind}}</h1>
<h1>{{image.color}}</h1>
<h1>{{image.shape}}</h1>
<h1>{{image.id}}</h1>-->
</div>
</div>
</isotope>
<h2 align="center">
<button @click="reset">Show all</button>
</h2>
</div>
<script src='https://unpkg.com/vue/dist/vue.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.13.1/lodash.min.js'></script>
<script src='https://npmcdn.com/isotope-layout@3.0.6/dist/isotope.pkgd.min.js'></script>
<script src='https://rawgit.com/David-Desmaisons/Vue.Isotope/master/src/vue_isotope.js'></script>
<script src='https://unpkg.com/axios/dist/axios.min.js'></script>
<script>
let currentKind = null;
let currentColor = null;
let currentShape = null;
let imageSearchString = null;
var vm = new Vue({
el: '#vue',
data() {
return {
currentKind:'',
currentColor:'',
currentShape:'',
options: {
itemSelector: ".imageBlock",
getSortData: {
id: "id"
},
sortBy : "id",
getFilterData: {
Finder: function(itemElem) {
let kindSearch = currentKind ? itemElem.kind.indexOf(currentKind) !== -1 : true;
let colorSearch = currentColor ? itemElem.color.indexOf(currentColor) !== -1 : true;
let shapeSearch = currentShape ? itemElem.shape.indexOf(currentShape) !== -1 : true;
return kindSearch && colorSearch && shapeSearch
},
},
},
images: '',
};
},
computed: {
kinds(){
let allTags = _.flatten(this.images.map(image => image.kind))
return [''].concat(_.uniq(allTags))
},
colors(){
let allTags = _.flatten(this.images.map(image => image.color))
return [''].concat(_.uniq(allTags))
},
shapes(){
let allTags = _.flatten(this.images.map(image => image.shape))
return [''].concat(_.uniq(allTags))
},
},
mounted(){
setTimeout(()=>{
this.onChange()
}, 200)
},
created: function () {
this.loadImages();
},
methods: {
onChange: function() {
currentColor = this.currentColor;
currentShape = this.currentShape;
currentKind = this.currentKind;
this.$refs.isotope.filter('Finder');
this.$refs.cpt.layout('packery');
},
reset(){
currentColor = '';
currentShape = '';
currentKind = '';
this.currentColor = '';
this.currentShape = '';
this.currentKind = '';
this.onChange()
},
// THIS IS THE PART OF THE CODE IN QUESTION I THINK
loadImages: function () {
var vm = this;
axios.get('myimagedata.json')
.then(function (response) {
vm.images = response.data.images;
})
.catch(function (error) {
vm.images = 'An Error occured.' + error;
});
}
},
});
</script>
</body>
</html>
这是我尝试通过axios加载的外部JSON文件“ myimagedata.json”：
{
"images": [
{
"id": 1,
"kind": ["A"],
"color": ["Green", "Blue"],
"shape": ["Square"],
"pic": "http://r.ddmcdn.com/s_f/o_1/cx_462/cy_245/cw_1349/ch_1349/w_720/APL/uploads/2015/06/caturday-shutterstock_149320799.jpg",
"url": "http://r.ddmcdn.com/s_f/o_1/cx_462/cy_245/cw_1349/ch_1349/w_720/APL/uploads/2015/06/caturday-shutterstock_149320799.jpg",
"title": "A"
},
{
"id": 2,
"kind": ["B"],
"color": ["Green", "Red"],
"shape": ["Circle"],
"pic": "https://www.kimballstock.com/pix/DOG/05/DOG-05-JE0078-01P.JPG",
"url": "https://www.kimballstock.com/pix/DOG/05/DOG-05-JE0078-01P.JPG",
"title": "B"
}
]
}
答案 0 :(得分：0)
在axios中，您应该可以执行以下操作。您可能需要编写一个var self = this。外部库将自己重写this，以便访问vue this变量，您需要预先设置一个变量并使用新变量来设置数据。以后，请显示有问题的代码，例如loadImages()，并显示错误信息（如果有）。
var self = this
axios.get('/myimagedata.json')
.then(function (response) {
self.images = response.data.images
})
.catch(function (err) {
console.error(err)
})
此处有您的json回复
{
"images": [{
"id": 1,
"kind": ["A"],
"color": ["Green", "Blue"],
"shape": ["Square"],
"pic": "http://r.ddmcdn.com/s_f/o_1/cx_462/cy_245/cw_1349/ch_1349/w_720/APL/uploads/2015/06/caturday-shutterstock_149320799.jpg",
"url": "http://r.ddmcdn.com/s_f/o_1/cx_462/cy_245/cw_1349/ch_1349/w_720/APL/uploads/2015/06/caturday-shutterstock_149320799.jpg",
"title": "A"
},
{
"id": 2,
"kind": ["B"],
"color": ["Green", "Red"],
"shape": ["Circle"],
"pic": "https://www.kimballstock.com/pix/DOG/05/DOG-05-JE0078-01P.JPG",
"url": "https://www.kimballstock.com/pix/DOG/05/DOG-05-JE0078-01P.JPG",
"title": "B"
}
]
}