gpalsingh

# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt
#force_color_prompt=yes

if [ -n "$force_color_prompt" ]; then
    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
   # We have color support; assume it's compliant with Ecma-48
   # (ISO/IEC-6429). (Lack of such support is extremely rare, and such
   # a case would tend to support setf rather than setaf.)

gpalsingh

Lesson 6: Syntax

• let: Variables can be reassigned, but can’t be redeclared in the same scope.
• const: Variables must be assigned an initial value, but can’t be redeclared in the same scope, and can’t be reassigned.
• Hoisting: Before any JavaScript code is executed, all variables are hoisted, which means they're raised to the top of the function scope.
• Temporal dead zone: If a variable is declared using let or const inside a block of code, then the variable is stuck in what is known as the temporal dead zone until the variable’s declaration is processed.
• Suggested to ditch var in place of using let and const.
• Template literals: Denoted with backticks ( `` ), template literals can contain placeholders which are represented using ${expression}.
• Examples:

gpalsingh

var add = function(x, y) {
  var total = x + y;
  return total;
}
console.log(add(2, 3));

gpalsingh

var add = (x, y) => {
  var total = x + y;
  return total;
}
console.log(add(2, 3));

gpalsingh

var add = (x, y) => { return x + y; }
console.log(add(2, 3));

gpalsingh

var add = (x, y) => x + y;
console.log(add(2, 3));

gpalsingh

var hello = (name) => `Hello ${name}!`
console.log(hello('Gurpal'));

gpalsingh

var hello = name => `Hello ${name}!`
console.log(hello('Gurpal'));

gpalsingh

var hello = => "Hello";
console.log(hello());

gpalsingh

var hello = _ => "Hello";
console.log(hello());