Thread by @souravWD

❀ JavaScript Cheatsheet

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✧ JavaScript Arrays
✧ JavaScript Boolean Methods
✧ JavaScript Arithmetic operators
✧ Logical operators
✧ Bitwise operators
✧ Function
✧ Escape Characters
✧ JavaScript String Methods
✧ Pattern Modifiers
✧ Brackets

➊ JavaScript Arrays
❑ concat()⇥ join several arrays one
❑ from()⇥ Create an array from an object
❑ pop()⇥ Remove the last element of an array
❑ push()⇥Add a new element at the end
❑ shift()⇥ Remove the first element of an array
❑ sort()⇥ Sort element alphabetically

❑ slice() ⇥ Pull a copy of a portion of an array into a new array object
❑ splice() ⇥ Add element in a specified way and position
❑ unshift() ⇥ Add a new element to the beginning
❑ copyWithin() ⇥ Copy array element within the array, to and specfied positions

❑ join()⇥ Combine element of an array into a single string and return the string
❑ indexof() ⇥ Return the primitive value of the specified element
❑ includes() ⇥ check if an array contains the specified element
❑ reveres() ⇥ sort element in descending order

❑ reduce() ⇥ Reduce the values of an array to a single value
❑ reduceRight() ⇥ Reduce the values of an array to a single value
❑ entries() ⇥ Return a key value pair array iteration object
❑ every() ⇥ Check if every element in an array passes a test

❑ fill() ⇥ fill the element in an array with a static value
❑ forEach() ⇥ call a function for each array element

➋ JavaScript Boolean Methods
❑ toString() ⇥ Convert a boolean value to a string and the result
❑ valueOf() ⇥ Return the first position at which a given element appears in an array
❑ toSource() ⇥ Return a string representing the source code of the object

➌ JavaScript Arithmetic operators
+ ⇥ Addition
- ⇥ Subtraction
* ⇥ Multiplication
/ ⇥ Division
(...) ⇥ Grouping operator
% ⇥ modulus
++ ⇥ increment numbers
-- ⇥ Decrement numbers
== ⇥ equal to
=== ⇥ equal value and equal type
!= ⇥ not equal
!== ⇥ not equal value

> ⇥ Greater than
< ⇥ lesser than
>= ⇥ Greater than or equal to
<= ⇥ Lesser than or equal to
? ⇥ Ternary operator

➍ Logical operators
&& ⇥ Logical AND
|| ⇥ Logical OR
! ⇥ Logical NOT

➎ Bitwise operators
& ⇥ and statement
| ⇥ or statement
~ ⇥ not
<< ⇥ left shift
>> ⇥ Zero fill right
> ⇥ shift

➏ Function
alert()
confirm()
console.log()
document.write()
prompt()

➐ JavaScript String Methods
charat()
charCodeat()
concat()
fromcharcode()
indexof()
iastindexof()
match()
reolace()
search()
slice()
split()
startsWith()
substr()
substring()

➑ Brackets
[abc] ⇥ Fine any of the characters in the brackets
[<abc] ⇥ Fine any characters in the brackets
[0-9] ⇥ Fine digit specified in the brackets
[A-z] ⇥ Fine any character from uppcase a to lowercase z
(a | b | c) ⇥ Fine any of the alternatives separated with |

➒ Pattern Modifiers
e ⇥ Evaluate replacement
i ⇥ perform case-insensitive matching
g ⇥ perform global matching
m ⇥ perform multiple line matching
s ⇥ Treat strings as single line
x ⇥ Allow comments and whitespace in pattern
u ⇥ Ungreedy pattern

10. Escape Characters
\' ⇥ Single quote
\" ⇥ Double quote
\\ ⇥ Backslash
\b ⇥ Backspace
\f ⇥ form feed
\n ⇥ New file
\r ⇥ Carrige return
\t ⇥ Horizontal tabulator
\v ⇥ Vertical tabulator

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