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Switch

The switch statement evaluates an expression and allows different blocks of code to execute depending on the result of that expression. It contains any number of case clauses marking code to execute based on values returned by the expression, and an optional default statement marking code that executes if none of the case clauses are true. The code following a matching case clause will execute until it encounters a break statement, a return statement, or the end of the switch block. This means that if a break is omitted at the end of one case block, subsequent case blocks and/or the default block will be executed regardless of the value of the original expression. javascript switch (expression) { case value1: // Statements executed when expression = value1

Attributes

Attributes can be added to the opening tag of an HTML element to change its default behavior or provide additional data about it.

Elements

An HTML element is a piece of content in an HTML document. It is everything from the opening tag to the closing tag.

Data Types

Data types are how data in programming is classified. In JavaScript, there are eight fundamental data types: Number, BigInt, String, Boolean, Null, Undefined, Symbol, and Object.

Conditionals

Conditionals take an expression, which is code that evaluates to determine a value, and checks if it is true or false. If it’s true, we can tell our program to do one thing — we can even account for false to do another. An if statement accepts an expression with a set of parentheses: - If the expression evaluates to a truthy value, then the code within its code body executes. - If the expression evaluates to a falsy value, its code body will not execute. js const isMailSent = true; if (isMailSent) {

Headings

There are 6 heading elements in HTML. They are labeled 1-6, with 1 being the largest sized heading and 6 being the smallest. These are great for labeling different sections in a website.

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Concept of the Week

Express

Express is a back end web framework for Node.js applications. It is primarily used to build web applications and APIs and provide network request functionality. In order to use Express, Node.js must be installed. Since it is popular choice for a back end tool, Express belongs to popular tech stacks including: - MERN (MongoDB + Express + React + Node) - MEAN (MongoDB + Express + Angular + Node) - MEVN (MongoDB + Express + Vue + Node)

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DataFrame

A DataFrame is the primary object used by Pandas to store and manipulate data.

.drop()

.dropna()

.loc

Top community contributors

Concept of the Week

Express

Express is a back end web framework for Node.js applications. It is primarily used to build web applications and APIs and provide network request functionality. In order to use Express, Node.js must be installed. Since it is popular choice for a back end tool, Express belongs to popular tech stacks including: - MERN (MongoDB + Express + React + Node) - MEAN (MongoDB + Express + Angular + Node) - MEVN (MongoDB + Express + Vue + Node)

Recently Added

DataFrame

A DataFrame is the primary object used by Pandas to store and manipulate data.

.drop()

.dropna()

.loc