{"id":5595,"date":"2023-07-15T12:08:38","date_gmt":"2023-07-15T16:08:38","guid":{"rendered":"https:\/\/www.cloudsurph.com\/?p=5595"},"modified":"2023-07-15T12:11:50","modified_gmt":"2023-07-15T16:11:50","slug":"store-data-in-localstorage-in-javascript","status":"publish","type":"post","link":"https:\/\/www.cloudsurph.com\/store-data-in-localstorage-in-javascript\/","title":{"rendered":"Store Data in LocalStorage in JavaScript"},"content":{"rendered":"

Here, we try to discuss How to Store Data in LocalStorage in JavaScript. We can be used to store data on the user’s computer by the LocalStorage API gives front-end web developers access to a common key-value datastore.<\/p>\n

Storing data on the client side can help reach the performance of your web applications because it can reduce the number of database queries necessary on the server.<\/p>\n

Here, these frees up valued server resources and can potentially minimize infrastructure costs.<\/p>\n

In this article, you will learn how to save data to localStorage in JavaScript.<\/p>\n

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What is localStorage in JavaScript?<\/strong><\/h3>\n

The LocalStorage is a property that allows JavaScript sites and apps to store key-value pairs in a web browser without an expiration date.<\/p>\n

This means the saved data persists even after the user closes the browser or restarts the computer.<\/p>\n

The LlocalStorage is a Window object property, making it a global object that can interact with and manipulate browser windows.<\/p>\n

It can be used in combination with other window features and methods.<\/p>\n

How to Store Data in LocalStorage in JavaScript<\/strong><\/h3>\n

You can use the setItem() function to store data in LocalStorage. The item key and a value are two parameters that take this function.<\/p>\n

\r\n\/\/ Functions\r\nlocalStorage.setItem('name', 'Cloudsurph LLC');\r\n\r\n\/\/ Object\r\nlocalStorage.name = 'Cloudsurph LLC';\r\n\r\n\/\/ Array\r\nlocalStorage['name'] = 'Cloudsurph LLC';\r\n<\/pre>\n
We’re going to save their name so we can use it later to show them a personal message when the user submits the form.<\/p>\n
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Now, The JavaScript code below shows how you can interrupt form submission and save the username<\/p>\n
\r\n<form id=\"contactForm\" action=\"contact.php\" method=\"POST\">\r\n<div class=\"field\">\r\n<label for=\"name\">Name<\/label>\r\n<input type=\"text\" name=\"name\" id=\"name\">\r\n<\/div>\r\n<div class=\"field\">\r\n<label for=\"email\">Email<\/label>\r\n<input type=\"email\" name=\"email\" id=\"email\">\r\n<\/div>\r\n<div class=\"field\">\r\n<label for=\"message\">Message<\/label>\r\n<textarea name=\"message\" id=\"message\"><\/textarea>\r\n<\/div>\r\n<div class=\"field\">\r\n<input type=\"submit\" value=\"send\">\r\n<\/div>\r\n<\/form>\r\n<\/pre>\n
Now let\u2019s take a look at how to get it back out again so that you know how to save data to the datastore.<\/p>\n
\r\nwindow.onload = function() {\r\n\r\n\u00a0 \/\/ Check for LocalStorage support.\r\n\u00a0 if (localStorage) {\r\n\r\n\u00a0 \u00a0 \/\/ Add an event listener for form submissions\r\n\u00a0 \u00a0 document.getElementById('contactForm').addEventListener('submit', function() {\r\n\u00a0 \u00a0 \u00a0 \/\/ Get the value of the name field.\r\n\u00a0 \u00a0 \u00a0 var name = document.getElementById('name').value;\r\n\r\n\u00a0 \u00a0 \u00a0 \/\/ Save the name in localStorage.\r\n\u00a0 \u00a0 \u00a0 localStorage.setItem('name', name);\r\n\u00a0 \u00a0 });\r\n\r\n\u00a0 }\r\n\r\n}\r\n<\/pre>\n
Previous JavaScript Articles<\/h3>\n