我有一个看起来像的对象:
{
"id": 1,
"name": "Customer",
"parks": {
"1": "Park a",
"23": "Park b",
"7": "Park c",
"83": "Park d"
},
"users": {
"11": "user@customer.com"
}
}
parks
和users
左侧的值不是索引,而是Park的实际id
。如何在Javascript中访问此值?
目前我使用的是Vue.Js,所以我将这样的值绑定到一个组件:
<park-component v-for="park in customer.parks"
v-bind:prop="park"
v-bind:key="park.id">
</park-component>
然而,这仅限于右侧的停车价值,即名称“停放a”。我也需要能够访问左侧。如果不能通过html中的Vue实现,可以在脚本中完成吗?即如果我有:
"23": "park b"
我如何获得23
?
答案 0 :(得分:12)
您可以使用v-for
指令迭代对象并获取密钥。
<ul>
<li v-for="(value, key) in object">{{ key }}: {{ value }} </li>
</ul>
new Vue({
template: `
<ul>
<li v-for="(value, key) in object">{{ key }}: {{ value }} </li>
</ul>
`,
data: () => {
return {
object: {
key1: 'value1',
key2: 'value2',
key3: 'value3',
},
};
},
}).$mount('#root');
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
</head>
<body>
<div id="root"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.0.3/vue.js"></script>
</body>
</html>
答案 1 :(得分:1)
首先获取密钥:Object.keys
然后循环它:)
我已经包含了如何访问这些值的示例!
var test = {
"id": 1,
"name": "Customer",
"parks": {
"1": "Park a",
"23": "Park b",
"7": "Park c",
"83": "Park d"
},
"users": {
"11": "user@customer.com"
}
};
var keys = Object.keys( test.parks );
for (var i = 0; i < keys.length; i++){
console.log( test.parks[ keys[ i ] ] )
}
&#13;
答案 2 :(得分:1)
id
中没有park
元素,请像这样使用index
<park-component v-for="(park,index) in customer.parks"
v-bind:prop="park"
v-bind:key="index">
</park-component>
var parkComponent = Vue.extend({
template: "<div>Key : {{park_key}}, Prop : {{prop}}</div>",
props: ['prop','park_key']
});
var app = new Vue({
el: "#vue-instance",
data: {
customer:{
"id": 1,
"name": "Customer",
"parks": {
"1": "Park a",
"23": "Park b",
"7": "Park c",
"83": "Park d"
},
"users": {
"11": "user@customer.com"
}
}
},
mounted() {
},
components: {
parkComponent,
},
})
&#13;
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.1/vue.js"></script>
<div id="vue-instance">
<park-component v-for="(park,index) in customer.parks"
v-bind:prop="park"
v-bind:park_key="index">
</park-component>
</div>
&#13;
注意:key
无效v-bind:key
,key
已保留