javascript - Why is it said that good phpers must be proficient in js?

phper or web backend, does it really rely on js? Of course, I’m not talking about beginners

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phper or web backend, does it really rely on js? Of course, I’m not talking about beginners

Not a strong dependency.
I think it is enough for a backend to understand and be familiar with js, so that it can better communicate with front-end students, improve work efficiency, and avoid communication barriers. Just like as a front-end, it is also important to understand and be familiar with a back-end language. You do not need to develop the back-end, but you will not understand everything when communicating with back-end classmates, which will increase communication costs.
But having said that, it is definitely better to be proficient in front-end and back-end, as having too many skills is not overwhelming.

Let’s learn nodejs directly. Give up php, the 'best' language in the world, and accept js, the 'language developed in 10 days'

The word "proficient" cannot be used casually. Even if you are recruiting PHP programmers, it is rarely required to be "proficient" in PHP, let alone "proficient" in JS. However, PHP programmers are still required to be able to write front-end, even if they can CSS layout, can use jQuery and plug-ins and basic JS to write page effects.

PHP is often used to generate HTML code. Some companies’ front-end is only responsible for styles, and JS is written by PHPer

I think it is necessary to know some JS. It would be better if you are "proficient" and you will be even more powerful

Most development now separates the front-end and back-end. The background doesn’t care about js

Proficient in js...so awesome.

This was a requirement a few years ago, but now the front-end and back-end are separated. You can focus on your php.

This depends on the company

Write API, no need to use js

It’s like cooking. PHP counts the vegetables and jS represents the salt. The vegetables can still be eaten without salt, but the vegetables without salt are difficult to eat.