identifying syntax

README.md

Identifying

In these exercises you will be given a small program and be asked to identify each piece of syntax with a comment, like this:

// prim SC
'use strict';

// kw id oper prim SC
let color = 'green';

// id D id OP id CP SC
console.log(color);

Here's a shorthand you can use so your comments don't get too long:

• kw: keyword
• id: identifier
• oper: operator
• prim: primitive
• And for the different syntax character:
  • D: dot or period - .
  • C: comma - ,
  • SC: semicolon - ;
  • OP: opening parenthesis - (
  • CP: closing parenthesis - )
  • OC: opening curly bracket - {
  • CC: closing curly bracket - }

example.js

// prim SC
'use strict';

// kw id oper prim SC
let input = null;

// kw OP id oper prim CP OCB
while (input === null) {
  // id oper id OP prim CP SC
  input = prompt('type nothing and click "enter"');
  // id D id OP id CP SC
  console.log(message);
  // CCB
}

// kw id oper prim SC
let message = '';
// wk OP id oper prim CP OCB
if (input === '') {
  // id oper prim SC
  message = 'thank you for nothing!';
  // CCB kw OCB
} else {
  // id oper prim oper id SC
  message = 'this is not nothing: ' + input;
  // CCB
}

// id OP id CP SC
alert(message);