Is JS needed in PHP back-end?

Question

PHP

I heard that JS is used together with PHP for user interaction. Is this true, and if not, where is JS used?

Answer 1

In fact, there is no perfectly clean back, you just have to deal with the front. And js is needed at least to understand the interaction with the back through json

Answer 2

JS is used everywhere where possible!
Both on the server and on the client, and you can do without PHP at all.
You can write mobile applications.
PHP occupies 80% of the server application market
1.
JavaScript in the browser.
PHP on the server.
2.
JavaScript in the browser.
JavaScript on the server.
"If shitty hosting"
JavaScript in the browser.
PHP on the server.

Answer 3

I am a pure php backend developer. For two years there were 3 tasks when it was necessary to move the front a little (once I made one spa page on jquery). And so they always give a front-developer to the team, who makes the whole front, and I only make ends on the api.
Ideally, you need to know js at the typescript + angular / react level so that you can safely move some elements if necessary.