Open alexanderism55 opened 2 years ago
Study, study, study and when u finish studyng, study even more.
excellent wisdom :) keep practicing it
evening.
What went less well? Time management againg.
can you please be a bit more specific? what causes the issues recently? does it have to do with the course or something outside of HYF? can we help?
- the rest are a little mind boggling for me.
remove number was the trickiest, so if you could solve that, you are on the right track :)
- I understand how importing and exporting works, It makes a lot of sense to build a software that way since it makes it harder to brake the code during making or adding new features.
exactly, this is important to understand and use
- I guess the problem is with understanding the logic so I have started taking the "freecodecamp" JS course.
not sure, but it is ABSOLUTELY NECESSARY to study from various sources during the week and practice..even more, than with previous modules..
I am just taking the JS course from the free code camp.
that's great, I did it too at one point
- creating a function or even reading a function proves to be difficult to me.
this is the most important aspect in learning JS..to be able to read and write functions, but the good news is that if you follow some of the suggested learning materials and practice your knowledge with exercises, you will soon master it :)
- Creating a loop function to solve a problem, for example where do I use i-- and i++ confuse me alot.
well it depends if you want to count upwards or downwards, or in other words from the beginning or the end of an array or a string.. I think in maybe 95% of cases you will use i++.
Learning Objectives
Priorities: 🥚, 🐣, 🐥, 🐔 (click to learn more)
There is a lot to learn in this repository. If you can't master all the material at once, that's expected! Anything you don't master now will always be waiting for you to review when you need it. These 4 emoji's will help you prioritize your study time and to measure your progress: - 🥚: Understanding this material is required, it covers the base skills you'll need to move on. You do not need to finish all of them but should feel comfortable that you could with enough time. - 🐣: You have started all of these exercises and feel you could complete them all if you just had more time. It may not be easy for you but with effort you can make it through. - 🐥: You have studied the examples and started some exercises if you had time. You should have a big-picture understanding of these concepts/skills, but may not be confident completing the exercises. - 🐔: These concepts or skills are not necessary but are related to this module. If you are finished with 🥚, 🐣 and 🐥 you can use the 🐔 exercises to push yourself without getting distracted from the module's main objectives. ---
0. Asserting
let
vs.const
: You can explain the differences betweenlet
andconst
including: uninitialized declarations and reassignment. You can determine when a variable can be assigned withconst
in a program.===
and!==
operators compare strings, and can predict the result of any string comparison.console.log
: You can useconsole.log
to create program traces in the console, and to print other helpful info for developers.console.assert
: You can use theconsole.assert
for assertion testing, and can write a helpful message assertion message.1. Primitives and Operators
typeof
: You can predict thetypeof
operator's output for values from any of the 5 main primitive types.Boolean()
,String()
andNumber()
to convert between primitive types.&&
,||
,!
and? :
.&&
and||
.+
,!
and>
.2. Control Flow
if
/else
statements.while
loops.for-of
Strings: You can predict and trace simple programs that iterate through the characters of a string usingfor-of
.for
loops works by refactoring simplefor
loops intowhile
loops.break
.continue
.3. Functions
5. Unit Testing
describe
/it
/expect.toEqual
functions are defined by a testing library and made available as global variables in a testing environment. They are not part of JavaScript!file.__.js
. Sub-extensions are a convention for developers and development tools. They do not change how JavaScript inside the file works.6. ES Modules
?deps
lens to visualize the dependencies in a folder.'use strict'
!export const _ = () => {};
import { _ } from './path/to/file.js';
6. Using Functions
7. Arrays
const arr = ['items'];
.at()
and a positive or negative index.arr[4] = 'hello'
.Array.isArray(something)
const shallowCopy = [...arr];
8. Functional Array Methods
[].every
[].some
[].map
[].filter
[].find
[].reduce
9. Objects
const obj = { a: 1, b: 2 };
.