我试图将会话数据存储到localStorage,但是我收到了一个错误。"ReferenceError: localStorage未定义“
这是密码。
import alt from '../alt';
import UserActions from '../actions/UserActions.js';
// To Do: Inplement LocalStorage Polyfill
class UserStore {
constructor() {
this.initialize();
this.bindListeners(
我有两个问题:
当我加载页面时,我在检查它时查看"Debug“,表示本地存储是未定义的
如何在页面中显示本地存储值
JS代码:
var loadLives = setInterval(showLives, 100);
// get lives from localstorage
var livesInStorage = window.localstorage.getItem('lives');
let lives;
if(livesInstorage) {
//parse localstorage data to Int
lives = parseInt(li
import { writable } from 'svelte/store';
/** Read the current token from LocalStorage on boot */
const token = writable(localStorage.getItem('token'));
/** Store the token in LocalStorage whenever it´s updated */
token.subscribe((val) => {
if (!localStorage) return;
if (!val
如何在VectorLayer (ol/layer/Vector)中获得一些属性--我只想简单地编写代码,并想知道是否可能获得例如 title ,并使用这些属性从localStorage Tray获得值: this.title、getProperties(title)、get.title、title,并在浏览器中有未定义的或无效的。
代码:
export const v_alarm_co = new VectorLayer({
source: cluSource,
style: sFeature,
title: "alarm co",
// this work --> vi
var test = null;
if(test !== null){
console.log('should not be logged in the console');//it worked
}
localStorage.setItem('foo',null);
console.log(localStorage.getItem('foo'));//logs null
if(localStorage.getItem('foo') !== null){
console.log('should not
我的职能是:
function assertNonNullish<TValue>(
value: TValue,
error?: Error
): asserts value is NonNullable<TValue> {
if (value === null || value === undefined) {
error ??= new Error("Something does not exist");
throw error;
}
}
这应该是用来检查某物是否为空或未定义。如果我使用这个函数,类型记录也知道某些东西
如何访问localStorage.getItem(JSONObj)的值
var result = JSON.parse(localStorage.getItem("resultData")); // ---In Ajax SuccessCallBack I have written var parseResult = JSON.stringify(result);localStorage.setItem("resultData",parseResult); ---
alert("Result :"+result); // I get prop
我不知道我到底需要什么,但我的情况如下。
我有一个功能来检查auth状态如下:
authCheck() {
if (localStorage.getItem('auth_key')) {
if (!this.jwtHelper.isTokenExpired(localStorage.getItem('auth_key'))) // check if its not expired
{
return 0;
}
else
function setL(sname, svalue) {
localStorage.setItem(sname, svalue)
}
function getL(sname) {
if (!localStorage.getItem(sname)) localStorage.setItem(sname, "")
return localStorage.getItem(sname)
}
function delL(sname) {
localStorage.removeItem(sname)
}
for (i = 0; i < op
在还原器中,我需要从localStorage读取数据来决定记录的计数,这样就可以确定默认选择的项的名称。在还原剂中可以使用localStorage吗?
密码,
const ugData = JSON.parse(localStorage.getItem("ugData"));
const defaultState = {
...
// if in the localstorage,
// use allgroups length to decide
// the selected item's name
select