继续在混合应用程序Javascript中获取[对象对象]



我正在使用Nuxt JS,Cordova和Cordova原生存储(本质上是localstorage(构建一个混合应用程序。

我正在将对象保存到本机存储,并在mounted()的页面加载中检索它,但是,无论我尝试访问对象数据,我都会收到以下错误:

[Object Object]

我在每页加载的组件中的JS是:

import { mapState } from 'vuex';
export default {
mounted () {
document.addEventListener("deviceready", this.getNativeStorage(), false)
},
methods: {
getNativeStorage() {
window.NativeStorage.getItem("beacon_native_storage", (value) => {
var parseObj = JSON.parse(value)
alert(parseObj)
alert(parseObj.localStorage)
}, (error) => {
alert(`Error: ${error.code}-${error.exception}`)
});
},
refreshNativeStorage(currentState) {
window.NativeStorage.initWithSuiteName("beacon");
window.NativeStorage.setItem("beacon_native_storage", JSON.stringify(currentState), () => {
alert('Stored currentState')
}, (error) => {
alert(`Error: ${error.code}`)
});
}
},
computed: {
state () {
return this.$store.state
}
},
watch: {
state: {
handler: function (val, Oldval) {
setTimeout(function () {
this.refreshNativeStorage(this.state)
}.bind(this), 10)
},
deep: true
}
}
}

来自 Vuex 的对象看起来像:

export const state = () => ({
pageTitle: 'App name',
dataUrls: [],
intervalData: [],
settings: [],
experimentalFeatures: [],
customAlertSeen: false,
user: null,
account: null,
payloadOutput: null
})

每次getItem运行时,alert(parseObj)总是返回[Object Object] rather than for instance, the data. And if I try returningparseObj.localStorage.pageTitlewhich is clearly defined instore/localStorage.jsit returnsundefined'

我哪里出错了?

所以,发生的情况是,localStorage存储字符串,而不是对象。

将项目保存到 localStorage 时,首先将其转换为字符串,然后在检索时从字符串分析它。

localStorage.setItem('a', {b:'c',d:'e'})
localStorage.getItem('a')  // "[object Object]" <- note the quotes!
localStorage.setItem('a', JSON.stringify({b:'c',d:'e'}))
JSON.parse(localStorage.getItem('a')) // {b: "c", d: "e"}

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