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Stemwijzer 2020

note on for loop for (initialExpression, condition, incrementExpression) { statements } initial expression defines an expression condition compares the initial expression, as long as the value is true, the for loop will run incrementExpression; add an operator to increment the initial expression

for(let i = 0; i <5;) { console.log('hello World'); } i = index/loop variable i<5: run as long as the value of i is less than 5, a value above 5 means the condition is not met ++ = increment operator statements run as long as the for loop runs

dot notation is json object related myObj = { "name":"John", "age":30, "car":null }; x = myObj.name; "name" is defined in the braces, and dot notation lets you access it.

function() {

} between curly brackets is the "body" and is where you program logic/statements, between parentheses is "inputs", referred to as "parameters" a parameter is a variable only active in the function

a parameter is a declaration, an argument is the value

function greet(name) { console.log('hello' + name): }

greet('John')

example of .map: /*const numbers = [1, 2, 3];

const items = numbers.map(n => { const obj = { value: n }; return obj;

}); */