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Type Script notes for Data Structures using java
- 1. PROGRESSIVE WEB APPLICATION DEVELOPMENT TYPESCRIPT TypeScript is typed JavaScript. TypeScript adds types to JavaScript to help, speed up the development by catching errors before even run the JavaScript code. TypeScript is an open-source programming language that builds on top of JavaScript. It works on any web browser, any OS, and any environment that JavaScript runs. Basic Types Type Annotation – learn how to use type annotation to define the static type for variables, function parameters, and return values. Type Inference – explain where and how TypeScript infers types of variables.
- 2. •Number – learn about the numeric types including floating-point numbers and big integers. •String –how to use the string type in TypeScript. •Boolean –the boolean type and how to use it effectively. •Object Type – the object type that represents non-primitive values. •Array –how to use an array and its operations. •Tuple - to store a fixed number of elements with known types in a tuple. •Enum –how to define a group of named constants by using the enum type. •Any Type – to use the any type to store a value of any type in a variable. Void type - how to use the void type as the return type of functions that do not return any value. •Never Type – to use the never type that contains no value. •Union Types- how to store a value of one or several types in a variable with the union type. •String Literal Types – learn to define a type that accepts only a specified string literal. •Type Aliases –how to define new names for types using type aliases.
- 3. Control Flow Statements •if…else – to execute code based on a condition. •switch..case –how to use the switch statement to allow a number of possible execution paths. •for – create a loop that executes a specified number of times. •while – create a pretest loop that executes as long as a condition is true. •do…while – learn how to create a posttest loop that executes until a condition is false. •break –how to use the break statement to terminate a loop or a switch. •continue –to skip to the end of a loop and continue to the next iteration.
- 4. Functions Functions – to declare a function that uses type annotation in TypeScript. Function types –on how to use function types to define types for functions. Optional Parameters - how to define functions with optional parameters. Default Parameters – introduce to default parameters. Rest Parameters – use the rest parameters to handle an infinite number of arguments of a function. Function overloadings – learn how to establish between parameter types and results of a function via function overloadings.
- 5. Classes •Classes –to construct a class in TypeScript. •Access Modifiers – private, protected, and public access modifiers. •The readonly Modifier – learn how to use the readonly modifier to make class properties immutable. •Getters & Setters –how to use the getters and setters to control the access of the class properties. •Inheritance - to use the inheritance to reuse the functionality of another class. •Static methods & properties – define static methods and variables shared by all instances of a class. •Abstract Classes – explain the abstract classes that define some common behaviors.
- 6. Interfaces • Interfaces – to interfaces and how to use them for creating contracts within code. • Extending Interfaces – to extend an interface to create a combination of interfaces. • Interfaces vs. Abstract Classes – explain the differences between interfaces and abstract classes. Advanced Types • Intersection Types – how to create a new type that has all the features of existing types. • Type Guards – to use type guards to narrow the type of a variable within a conditional block. • Type Assertions –using a type assertion to tell the compiler to treat a value as a specified type.
- 7. Generics • Introduction to TypeScript Generics –to use TypeScript generics to develop generic functions. • Generic constraints –how to add constraints to the generic types. • Generic Classes –how to develop generic classes. • Generic Interfaces – walk through the steps for creating generic interfaces. Modules • TypeScript Modules – introduce to modules in TypeScript and how to use them in other modules. Setting up TypeScript • Node.js TypeScript – how to set up a development environment for using TypeScript in the Node.js project. • TypeScript Vite – set up a web project that uses TypeScript and Vite to compile the TypeScript into JavaScript.