No foundation:

If there is no foundation, most people need 6-8 months (about 10 hours a day) when they work full-time, of which the learning time of HTML+CSS is about 2 months, and the later world is mainly used to learn JS and some frameworks, such as Vue.

Have a foundation:

You can get started quickly if you have a foundation. If you spend a few hours studying every day, you can simply develop some web in a few months.

In addition, the technology of software development is changing with each passing day, which requires the awareness of lifelong learning.