Q1. What is web storage?
Web storage is an API that provides a mechanism by which browsers can store key/value pairs locally within the user's browser, in a much more intuitive fashion than using...
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Q2. What is a Cookie?
A cookie is a piece of data that is stored on your computer to be accessed by your browser. Cookies are saved as key/value pairs. For example, you can create a cookie nam...
Q3. What are the options in a cookie?
There are few below options available for a cookie, 1. By default, the cookie is deleted when the browser is closed but you can change this behavior by setting expiry dat...
Q4. What is the main difference between localStorage and sessionStorage?
LocalStorage is the same as SessionStorage but it persists the data even when the browser is closed and reopened(i.e it has no expiration time) whereas in sessionStorage ...
Q5. How do you check web storage browser support?
You need to check browser support for localStorage and sessionStorage before using web storage, ```javascript if (typeof Storage !== "undefined") { // Code for localStora...
Q6. How do you check web workers browser support?
You need to check browser support for web workers before using it ```javascript if (typeof Worker !== "undefined") { // code for Web worker support. } else { // Sorry! No...
Q7. What are server-sent events?
Server-sent events (SSE) is a server push technology enabling a browser to receive automatic updates from a server via HTTP connection without resorting to polling. These...
Q8. How do you check browser support for server-sent events?
You can perform browser support for server-sent events before using it as below, ```javascript if (typeof EventSource !== "undefined") { // Server-sent events supported. ...
Q9. How do you access history in javascript?
The window.history object contains the browser's history. You can load previous and next URLs in the history using back() and next() methods. ```javascript function goBac...
Q10. What is an event flow?
Event flow refers to the order in which events are handled in the browser when a user interacts with elements on a webpage like clicking, typing, hovering, etc. When you ...