localstorage | chrome extension , localstorage eg | Storage library
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localstorage Key Features
localstorage Examples and Code Snippets
Lines of Code : 11
License : No License
Copyconst isLocalStorageEnabled = () => {
try {
const key = `__storage__test`;
window.localStorage.setItem(key, null);
window.localStorage.removeItem(key);
return true;
} catch (e) {
return false;
}
};
isLocalStorageEnabled function restoreFromLocalStorage() {
console.info('Restoring from LS');
// pull the items from LS
const lsItems = JSON.parse(localStorage.getItem('items'));
if (lsItems.length) {
// items = lsItems;
// lsItems.forEach(item => items function restoreFromLocalStorage() {
const lsItems = JSON.parse(localStorage.getItem('items'));
if (lsItems.length) {
items = lsItems;
// fire event
list.dispatchEvent(new CustomEvent('itemsUpdated'));
}
} function mirrorToLocalStorage() {
console.info('Saving items to localstorage');
localStorage.setItem('items', JSON.stringify(items));
} Community Discussions
Trending Discussions on localstorage
QUESTION
I am saving and getting my form value from localeStorage. when i am displaying data from it i want to remove the specific object i clicked on. my code does work but it removes all the data from it. here is my policy value:
...ANSWER
Answered 2021-Jun-15 at 21:46The entire data from beneficiaryInfo array is removed because your del function does just that. If you want to just remove a particular object from the array, you need to use the index or the id (if it has).
In the template declare the index and pass it as an argument to your delete method so you can remove from the list the object at that index.
QUESTION
I want to collect the names (Jenny, Tiffany, etc.) that are stored in every object. and these objects live in an array. I've used Array.prototype.every() and Array.prototype.forEach(), but I don't think they are the right methods.
I also want to note that majority of these codes are from Codaffection. I am practicing on developing in React.
If you would like to experiment with the code, click here.
In every object, there is an id, fullname, email and etc.
This is the code that adds, edits, generates unique ids for each employee, and gets all storage data.
...ANSWER
Answered 2021-Jun-15 at 19:27You mean to use map instead of forEach.
QUESTION
I want to able to loop my arrays and calculate the total price and display it in the console. this is suppose to be a cart application. I assign all the anchor tags to cart variable that loops through the anchors tag and assign the the tags to the values in my beverages array to be able to display it but i cant display the total amount of all the prices.
html
...ANSWER
Answered 2021-Jun-15 at 18:46Instead of writing too much and looping .... See this , it might help you build what you are willing too
HTML
QUESTION
I want to call a function in python and print a variable in a div tag in a separate html file, then transfer the content into the div in my index.html
index.html:
...ANSWER
Answered 2021-Jun-15 at 13:31You can use ajax in jquery to easily send and recieve data without page reload and then manipulate the dom using javascript.
rather than creating a seperate file make a div in index where you want to show the result.
include jquery before this
QUESTION
I'm using PDFDownloadLink from the react-pdf package to generate a PDF on the fly in my application and allow the user to download a report based on data being passed to the component that generates the PDF document. However, there are more than 400 pages that need to be rendered in this PDF, and this operation blocks the main thread for a few seconds. Is there any way to make this operation asynchronous, so the rest of the application will continue to function while the PDF is being generated? Also I would like to be able to cache the results, since the data being passed to the component can come from about 8 different arrays of data, which don't change very much, so switching between these arrays I would rather not to have to render the PDF all over again if the PDF for that given array has already been generated once before... I'm guessing the blob data needs to be stored somewhere, perhaps localStorage?
ANSWER
Answered 2021-Jun-15 at 13:58I finally found the answer to this in an issue on github which addresses this exact problem:
Is your feature request related to a problem? Please describe. It is an improvement. At the moment, if you use 'PDFDownloadLink' the PDF is being generated as the component loads.
Describe the solution you'd like It is not mandatory, but having multiple heavy PDFs ready to be downloaded wouldn't be the best approach since not every user will need it.
Describe alternatives you've considered I've used
pdf()function to generate the blob andfile-saverlib to download it:
QUESTION
I am already making a restful API using nodejs on the backend, here is my folder structure :
...ANSWER
Answered 2021-Jun-10 at 18:26- Why it works on Postman and not on the client code?
The difference is the format of the request. In Postman, you're sending the data as JSON object. While in the client code, you're sending data inside a form-data. They are different. That's why the req.body is empty. Different request formats require the server to parse in different ways.
I see in your code the line //formData.append("thumbnail", newProject.thumbnail); is commented, you prepare to send the project's thumbnail in the request. In this case, you cannot send the request in JSON format. You need to modify the server to make it understand the form data.
For this, I recommend this popular package
Multer is a node.js middleware for handling multipart/form-data, which is primarily used for uploading files.
QUESTION
I have two functions within my background.js. First function starts a counter, the second clears it from local storage. The problem is the setInterval in the first function keeps on running even after the second function is triggered. How can I clear a setinterval from another function?
background.js
...ANSWER
Answered 2021-Jun-15 at 06:44you need to keep the intervalId returned by the setInterval function and call a clearInterval(intervalId) in your second function (take a look here). For example:
QUESTION
I'm new in React and state hooks.I'm trying to make a website about creating booklist and save it to local storage. Also uploading image to cloudinary. My problem is ; when i trying to save cloudinary image url to the localstorage, it saves previous url. I think i have a problem about useState hooks but i couldnt figure it. Below is my code.
LocalStorage.js
...ANSWER
Answered 2021-Jun-15 at 00:57
setUploadUrl(result.url);
id = new Date().getTime().toString();
const newBook = {
id: id,
bookName: bookName,
writerName: writerName,
pageNumber: pageNumber,
uploadUrl: uploadUrl
};
QUESTION
I have multiple variables like so
...ANSWER
Answered 2021-Jun-14 at 06:40You can have your variables in an array like const arr = [] then loop through each of them. The entire thing would look something like:
QUESTION
Is it possible to combine a custom command which gets trigger in both beforeEach & afterEach hooks? I'm currently using the cypress-localstorage-commands plugin like so:
ANSWER
Answered 2021-Jun-14 at 15:17I'm not an expert in Cypress specifically, but all testing libraries have to play by the rules of Javascript: their "special functions" (like beforeEach/afterEach) are still just Javascript functions.
Thus, I believe that if you want to make a function that adds both a beforeEach and afterEach, it should be as simple as:
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