arrow function

default parameters

logical comparison

smart condition

IIFE

We cannot use a loop to step through the elements of an array.

This code is correct

Variable i in block scope and we can`t see it after loop

a = a || 3;

b = b || 4;

[a, b] = [3, 4];

a = 3;

b = 4;

a = a && 3;

b = b && 4;

a = b = 3;

IIFE

logical comparison

default parameters

smart condition

arrow function

arrow function

default parameters

logical comparison

smart condition

IIFE

We cannot use a loop to step through the elements of an array.

This code is correct

Variable i in block scope and we can`t see it after loop

a = a || 3;

b = b || 4;

[a, b] = [3, 4];

a = 3;

b = 4;

a = a && 3;

b = b && 4;

a = b = 3;

IIFE

logical comparison

default parameters

smart condition

arrow function

Add the conditional (!event.phase === bubbling) to the handler function

There is no capture phase on events

Add the conditional (event.phase === capture) to the handler function

All answers are wrong

This lifecycle is invoked after an error has been thrown by a root component

This lifecycle is invoked right before calling the render method, both on the initial mount and on subsequent updates

This lifecycle is invoked after an error has been thrown by a descendant component

This lifecycle invoked right before the most recently rendered output is committed to e.g. the DOM