How PHP and JS languages interact

JavaScript is not a new scripting language, but with the rise of AJAX technology, this kind of script runs on the client without wasting server-side resources and can build a good user interaction interface. Scripts are widely used. At the same time, the exchange of network programming languages and JavaScript variables has also become the focus of discussion.

The interaction between PHP and JavaScript can be roughly divided into three types, namely: using PHP to generate JavaScript, using COOKIE for data exchange, and using temporary files for data exchange.

1. PHP's method of generating JavaScript can dynamically generate JavaScript, so that settings on the server side are expressed through JavaScript on the client side, improving user experience. When using it, please note that the syntax of PHP generated JavaScript scripts does not need to be mixed with JavaScript syntax.

2. Use COOKIE for data exchange, which can be used when PHP and JavaScript scripts exchange small amounts of data. Because COOKIE has nothing to do with script code, both PHP and JavaScript can set and read COOKIE, making it very simple for the two languages to exchange data.

3. The principle of using temporary files for data exchange is the same as using COOKIE for data exchange, except that temporary files can access larger amounts of data and richer styles. But using temporary files often requires more operation code.

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