fariba salehi
Nov 4 · 2 min read

Huge World

Have you ever seen an ant works so hard? Ants work for a long time a day but with small progress. Sometimes I think what if they are very small for earth or our world is too big for them? I am like an ant! I work as much as I can in the day, but Web Development is a huge world. I have little progress every day, but I will reach my goal on day.

Discuss in words something you learned in class today or this week.

Electrical panel components that are logical control devices are electrical control components. They’re used to control the sequence of events that define how a control panel functions.

Here are some key components of the typical industrial control panel that you need to be familiar with:

· Power Circuit. …

· Control Circuit. …

· Switches. …

· Terminal Blocks. …

· Contactors. …

· Motor Drives. …

· Transformers. …

· Overcurrent Protection Devices.

What is the difference between state and props?

Basically, the difference is that state is something like attributes in OOP : it’s something local to a class (component), used to better describe it. Props are like parameters — they are passed to a component from the caller of a component (the parent) : as if you called a function with certain parameters

What is ReactDOM and what is the difference between ReactDOM and React?

ReactDOM renders React Elements to the DOM, so it’s for web development. ReactNative renders React Elements to a native mobile platform (android or iOS). You can write your code to target both at the same time.

What is React.createClass?

React.createClass allows you to generate component “classes.” Under the hood, your component class is using a bespoke class system implemented by React. With ES6, React allows you to implement component classes that use ES6 JavaScript classes. The end result is the same — you have a component class.

Which (if there is) node library method could you use to solve the algorithm problem you solved last night in your pre-homework.

1. String/Array

An algorithm problem’s input is often a string or array. Without auto-completion of any IDE, the following methods should be remembered.

toCharArray() //get char array of a String

charAt(int x) //get a char at the specific index

length() //string length

length //array size

substring(int beginIndex)

substring(int beginIndex, int endIndex)

Integer.valueOf()//string to integer

String.valueOf()/integer to string

Arrays.sort() //sort an array

Arrays.toString(char[] a) //convert to string

Arrays.copyOf(T[] original, int newLength)

System.arraycopy(Object src, int srcPos, Object dest, int destPos, int length)

Explain event delegation in JavaScript and why it is useful.

Delegation in JavaScript is a simple technique by which you add a single event handler to a parent element in order to avoid having to add event handlers to multiple child elements.

Which new JavaScript / browser features are you most excited about and why?

https://dev.to/gafi/7-new-exciting-javascript-features-you-need-to-know-1fkh

Fariba

WebDevelopment

Austin Coding Academy