The array in TypeScript allows you to store a collection of values of a single data type. TypeScript provides a number of functions to do various operations on an array. In this post, we will learn about the TypeScript array and its functions. Syntax Below is the syntax for declaring …
A typescript array allows you to hold elements of different types, and a map allows you to store key-value pairs of items. One of the common requirements in a typescript project is to convert an array to a map. In this post, we shall learn different ways to convert an …
A type alias in TypeScript is used for giving new names to existing data types. Type aliases can be used with a single data type, but their primary application is with union data types, which allow a single variable to contain two or more data types. We will learn how …
JavaScript is everywhere. It is used in every website you visit. JavaScript is an easy language to learn and program. But difficulty comes when we have to write large and complex programs. The first challenge we face is that JavaScript is an interpreted language and does not compile. We does …
There are two popular options available for writing TypeScript code: Online Playground Typescriptlang.org provides a web page where we can immediately write and see JavaScript output on a web page. You can click on the Playground link. In the left section of the page, we can write our TypeScript code, and …
In this TypeScript tutorial, we will learn about TypeScripts data types. Data types helps you to write code just like you write in other OOPS languages like C# and Java. Data Types provides strongly typed code. A strongly typed code means all variables data types are known at compile time. Strongly typed code helps …
TypeScript Union Type is a hint to the compiler for possible data types for a variable. We use the union data type when we are not sure about the possible variable data types, but we know that the possible data types are limited. For example, we have a function named …
A switch case statement is used when we have to execute between different blocks of code based on a condition. It replaces the need for multiple if…elseif conditions and provides more clean code. Switch evaluates an expression and then matches it with different case clauses. If any value matches the case clause, …
TypeScript optional parameters allow you to declare some parameters in the function optional, so that clients do not need to pass values to optional parameters. TypeScript is a strong typed language. When we declare parameters for a function, all the parameters are required, and the client has to pass values to every …
TypeScript Rest parameters allows a function to take unlimited parameters. Rest parameters are used when we are designing a function and we do not know how many parameters are required. Rest parameters feature group parameters into a single variable and we can access parameters inside a function just like an …