4_basic_math
dz / mdn / js / 0_javascript_first_steps / 4_basic_mathSummary
Basic math in javascripts, numbers and operators
Node Tree
Nodes
types_of_numbers | |
content | Types of Numbers |
children | integers, doubles, floats |
number_systems | |
content | Number Systems |
children | octal, binary, hexadecimal |
integers | |
content | integers |
parents | types_of_numbers |
floats | |
content | floats |
children | doubles |
parents | types_of_numbers |
doubles | |
content | doubles |
parents | floats, types_of_numbers |
octal | |
content | octal |
parents | number_systems |
hexadecimal | |
content | hexadecimal |
parents | number_systems |
binary | |
content | Binary |
parents | number_systems |
number_data_type | |
content | One data type for numbers: Number |
typeof | |
content | Typeof: checks data type |
useful_number_methods | |
content | Useful Number Methods |
children | string_to_number, toFixed |
toFixed | |
content | toFixed(): round number to fixed number of decimal places |
parents | useful_number_methods |
string_to_number | |
content | Passing string to Number() converts to number data type |
parents | useful_number_methods |
arithmetic_operators | |
content | Arithmetic Operators |
children | operands, operator_precedence, operators |
operands | |
content | Operands: numbers involved in arithmetic |
parents | arithmetic_operators |
operator_precedence | |
content | Operator Precedence |
parents | arithmetic_operators |
operators | |
content | Operators |
children | assignment, comparison, increment_decrement |
parents | arithmetic_operators |
increment_decrement | |
content | Increment/Decrement Operations |
parents | operators |
assignment | |
content | Assignment Operators |
parents | operators |
comparison | |
content | Comparison Operators |
children | triple_equals_vs_double |
parents | operators |
triple_equals_vs_double | |
content | === tests equality of values AND their datatypes, while == only checks if their values are the same. |
parents | comparison |