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What does Asynchronous means in Ajax? and also how does Ajax know when to pull data without server polling?
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Synchronous Ajax request is the process in which execution of the request stops until a response is received and Asynchronous Ajax request means the script continue the process without waiting for the server to reply. It will handle the reply if it arrives.
AJAX stands for “Asynchronous JavaScript and XML”. In simpler words, you can use Ajax to load data from backend without actually the page reloading. You can also send data to the server in the background, request data and receive data while the page has already loaded.
by default async is true. it means process will be continuing in jQuery ajax without wait of request. Async false means it will not go to next step untill the response will come.
Ajax calls are asynchronous by nature and defaults to true. Show activity on this post. By default, all requests are sent asynchronously (i.e. this is set to true by default).
Asynchronous means that the script will send a request to the server, and continue it's execution without waiting for the reply. As soon as reply is received a browser event is fired, which in turn allows the script to execute associated actions.
Ajax knows when to pull data from server, because you tell it when to do it.
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