Ajax is triggered by a front-end page, which in turn can be implemented? -Segmentfault

Title, Ajax is triggered by a front-end page action, and then to the background to fetch data, and then dynamically back to the front end. For example, implement no refresh to modify HTML elements. That in turn, by the PHP backend execution to a piece of code, if successful, the dynamic modification of the front-end page of the code, the same implementation of no refresh,

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Title, Ajax is triggered by a front-end page action, and then to the background to fetch data, and then dynamically back to the front end. For example, implement no refresh to modify HTML elements. That in turn, by the PHP backend execution to a piece of code, if successful, the dynamic modification of the front-end page of the code, the same implementation of no refresh,

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2 answers

The answer is helpful to the person, has the reference value 2 The answer is no help, it's the wrong answer, irrelevantly replying .

WebSocket push data to the front end

Comet,websocket are available, but they all require client-side connection initiation.

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