The promise is used quite a lot in both front-end (AngularJS) and back-end (NodeJS), so mastering this concept will help you a lot in coding and interviews. Asynchronous programming in Javascript Anyone who has ever done AJAX knows that Javascript ; the asynchronously connects to the server functions behind do not wait for the…

These are the three functions that make up the power and dominance of JavaScript. Bind is a function in Function.prototype so that the only function can call it. As mentioned in this article, bind is used to specify this parameter for a function.

We will discuss three features of OOP, compare their implementation in Java and JavaScript. Because the Wiki is already available, I just copied it, do not explain again around: Encapsulation: Hide information. This property does not allow the user of objects to change the intrinsic state of an object. Only…

One of the most troublesome things is the management and security of user information. Really! Signing up is difficult? Unlike you might imagine, registering / logging in and managing users is not that simple at all. It can get pretty messy with the following features: Allow users to register, log in by email User decentralization …

A rather complex roundabout concept that is easy to make front-end developers crazy. What is a prototype? When another developer keeps coming up and asking you, “What the heck is a prototype?”, Answer it: It’s your father’s head, asking questions. …

Hackers can sit at website A and seduce users to attack site B and other site C. In the Romance of the Three Kingdoms, talented military masters who have the talent of manipulating their thoughts sit in stubbornly determined stubbornly thousands of miles away. This article will explain how hackers…

This — keywords easy to make headache the programmers js. — When we first learn, this is also quite simple and harmless. If you’ve ever learned Java or C #, you must remember this keyword is used to point to the object that calls the function. In javascript, this keyword plays a similar role. …

A “strange” security hole with a long, and difficult-to-read name. What is strange? This security hole is “strange” in that it is in the top 4 OWASP, but there is very little documentation about it. …

Javascript is originally designed in a rudimentary way, used to validate on the client-side. If you follow the career of a web developer, you must work every day with js. …