28th March 2022
Coding⚑
- New: Sum up the VueJS tutorial.
Javascript⚑
-
New: Use ternary conditional operator.
It's defined by a condition followed by a question mark
?
, then an expression to execute if the condition is truthy followed by a colon:
, and finally the expression to execute if the condition is falsy.condition ? exprIfTrue : exprIfFalse
function getFee(isMember) { return (isMember ? '$2.00' : '$10.00'); } console.log(getFee(true)); // expected output: "$2.00" console.log(getFee(false)); // expected output: "$10.00" console.log(getFee(null)); // expected output: "$10.00"
-
New: Filter the contents of an array.
The
filter()
method creates a new array filled with elements that pass a test provided by a function.The
filter()
method does not execute the function for empty elements.The
filter()
method does not change the original array.For example:
const ages = [32, 33, 16, 40]; const result = ages.filter(checkAdult); function checkAdult(age) { return age >= 18; }
Arts⚑
Book Binding⚑
-
New: Introduce book binding.
Book binding is the process of physically assembling a book of codex format from an ordered stack of paper sheets that are folded together into sections called signatures or sometimes left as a stack of individual sheets. Several signatures are then bound together