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;
  }
  

• New: Interacting with HTML.

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 along one edge with a thick needle and sturdy thread.