Dang Trung Anh housecricket

## handler.js
// ✗ avoid
function handler() {
  this.logError(...)
}

// ✓ ok
function handler(context) {
  context.logError(...)
}

## type coercion.js
+ '123'      // ✗ avoid
Number('123) // ✓ ok

'' + true    // ✗ avoid
String(true) // ✓ ok

## constructor_without_arguments.js
var foo = new Foo   // ✓ avoid
var foo = new Foo() // ✗ ok

## private_property.js
class Rectangle {
  constructor(height, width) {
    this.height = height
    this.width = width
    this._area = height * width
  }
}

## constructor.js
const poly1 = new Polygon()

## equal_operator.js
if (name === 'Trung Anh')   // ✓ ok
if (name == 'Trung Anh')    // ✗ avoid

## declaration2.js
// ✓ ok
var v
if (flag) {
  v = x
} else {
  v = y
}

## wrong_declaration2.js
// ✗ avoid
if (flag) {
  var v = x
} else {
  var v = y
}

## declaration.js
// ✓ ok
var a = 2
var b = 3
var c = 4

## wrong_ declaration.js
var a = 2, b = 3, c = 4 // ✗ avoid
	// ✗ avoid
	function handler() {
	this.logError(...)
	}

	// ✓ ok
	function handler(context) {
	context.logError(...)
	}
	+ '123' // ✗ avoid
	Number('123) // ✓ ok

	'' + true // ✗ avoid
	String(true) // ✓ ok
	class Rectangle {
	constructor(height, width) {
	this.height = height
	this.width = width
	this._area = height * width
	}
	}
	if (name === 'Trung Anh') // ✓ ok
	if (name == 'Trung Anh') // ✗ avoid