What is the main purpose of the spread operator in ES6? Which method introduced in ES6 is used to merge two or more arrays? Is this a valid code? What is stored in the triangle array? ES6 gives an alternativ
What is the main purpose of the spread operator in ES6? Which method introduced in ES6 is used to merge two or more arrays? Is this a valid code? What is stored in the triangle array? ES6 gives an alternative way to assign variables. Can you guess what the below code does?
What usage types are covered in the AWS free tier for Amazon CloudFront? If we sign-up for Consolidated Billing, can we get the AWS Free Tier for each account? What happens if my usage is in multiple regions, and I exceed the free tiers? How do I know how much I’ve used and if...
In the other cases, we’ll have errors.A general rule of thumb is to always define functions, variables, objects and classes before using them, to avoid surprises.Suppose we have a function:function bark() { alert('wof!') }Due to hoisting, we can technically invoke bark() before it ...
CASL is an isomorphic authorization JavaScript library which restricts what resources a given user is allowed to access - stalniy/casl
Common cyberattack vectors include viruses,malware, email attachments, webpages, pop-up windows, instant messages, chat rooms and deception. Except for deception, all these methods involve programming or, in a few cases, hardware. Deception is when a human operator is fooled into removing or weak...
`In ES5 this is not legal.` // Interpolate variable bindings var name = "Bob", time = "today"; `Hello ${name}, how are you ${time}?` // Unescaped template strings String.raw`In ES5 "\n" is a line-feed.` // Construct an HTTP request prefix is used to interpret the replacemen...
In the above data structure, if you only needed theHobbit's name and family, you can achieve the same in two ways. Firstly, either you could drill into the data structure to obtain them and access them using the dot(.) operator. Or you could extract the needed values (in this case ...
Why reprex? Getting unstuck is hard. Your first step here is usually to create a reprex, or reproducible example. The goal of a reprex is to package your code, and information about your problem so that others can run it…
does not perform the transform whenargsvariable already exists always names the rest-parameter toargs LIMITATIONdoes not transform functions with formal parameters LIMITATIONdoes not remove uses ofArray.slice.call(arguments) arg-spread- use of apply() to spread operator ...