Editor’s note: This post was updated on 29 December 2020. Show
In this tutorial, we’ll show you how to use the We’ll cover the following in detail:
What is the Web Storage API?The Web Storage API is a set of mechanisms that enable browsers to store key-value pairs. It is designed to be much more intuitive than using cookies. The key-value pairs represent storage objects, which are similar to objects except they remain intact during page loads, and are always strings. You can access these values like an object or
using the What is the difference between sessionStorage and localStorage?The Web Storage API consists of two mechanisms: The main difference between In this tutorial, we’ll focus on how to use What is localStorage in JavaScript?
For a visual refresher on how to use Where is localStorage stored?In Google Chrome,
web storage data is saved in an SQLite file in a subfolder in the user’s profile. The subfolder is located at Firefox saves storage objects in an SQLite file called What is Window.localStorage?The The How does localStorage work?To use
setItem(): How to store values in localStorageJust as the name implies, this method allows you to
store values in the It takes two parameters: a key and a value. The key can be referenced later to fetch the value attached to it. window.localStorage.setItem('name', 'Obaseki Nosa'); Where To store arrays or objects, you would have to convert them to strings. To do this, we use the
const person = { name: "Obaseki Nosa", location: "Lagos", } window.localStorage.setItem('user', JSON.stringify(person)); getItem(): How to get items from localStorageTo get items from localStorage, use the
To retrieve a user key: window.localStorage.getItem('user'); This returns a string with value as: “{“name”:”Obaseki Nosa”,”location”:”Lagos”}” To use this value, you would have to convert it back to an object. To do this, we make use of the JSON.parse(window.localStorage.getItem('user')); removeItem(): How to delete localStorage sessionsTo delete local storage sessions, use the When passed a key name, the window.localStorage.removeItem('name'); clear(): How to delete all items in localStorageUse the More great articles from LogRocket:
This method, when invoked, clears the entire storage of all records for that domain. It does not receive any parameters. window.localStorage.clear(); key(): How to get the name of a key in localStorageThe var KeyName = window.localStorage.key(index); localStorage browser support
if (typeof(Storage) !== "undefined") { // Code for localStorage } else { // No web storage Support. } localStorage limitationsAs easy as it is to
use
With these, we have been armed with the power of LogRocket: Debug JavaScript errors more easily by understanding the contextDebugging code is always a tedious task. But the more you understand your errors the easier it is to fix them. LogRocket allows you to understand these errors in new and unique ways. Our frontend monitoring solution tracks user engagement with your JavaScript frontends to give you the ability to find out exactly what the user did that led to an error. LogRocket records console logs, page load times, stacktraces, slow network requests/responses with headers + bodies, browser metadata, and custom logs. Understanding the impact of your JavaScript code will never be easier! Try it for free. How to create and save data into a text file using JavaScript?Create a Blob constructor, pass the data in it to be to save and mention the type of data. And finally, call the saveAs (Blob object, "your-file-name.text") function of FileSaver.js library. Note: To create and save data into a text file, I have used a third party FileSaver.js library. Let’s jump into the actual juicy part of the code. 1.
How do you store data in JavaScript?We start by grabbing the ul, input, and save button. And hold them in variables as shown below: 1. Static Storage This is the most basic way to store data using JavaScript. All we do is create a variable to hold the data. For example, we could create an array of todos such as
How do I save a file in client side JavaScript?The easiest way to save a file in client-side Javascript is to use FileSaver. Alternatively, manually create a blob and offer a “save as”. Upload the data, save it on the server instead. Save the data to the local storage.
How do I save a file in Node JS?1 The easiest way to save a file in client-side Javascript is to use FileSaver. ... 2 Alternatively, manually create a blob and offer a “save as”. ... 3 Upload the data, save it on the server instead. ... 4 Save the data to the local storage. ... 5 In NodeJS, simply use the file system module. ...
How do I save changes in JavaScript?After loading a web page completely, press the F12 key to open the developer tools, then open the 'Sources' tab. Now open any Javascript file loaded on the browser and you can directly edit it by clicking anywhere in that file. After making modifications press Ctrl+S to save the changes.
How do I save a page in JavaScript?Now, how to save the page with the "result" from the JavaScript.. Press the F12 key or click: Tools-->F12 Developer Tools.. On the window that opens, click: View-->Source-->DOM (page) .. On the new window, click File-->Save , and then save the file.. How can JavaScript store data temporarily?There are various ways to do this, depending upon your requirement:. We can make use of constant variables, create a file Constants.js and can be used to store data as. ... . Make use of cookieStore, using: ... . Using Local Storage: ... . Option is to write the data into a file.. How do I save an uploaded JavaScript file?Now you are ready to make a web page in Node.js that lets the user upload files to your computer:. Step 1: Create an Upload Form. Create a Node.js file that writes an HTML form, with an upload field: ... . Step 2: Parse the Uploaded File. ... . Step 3: Save the File.. |