In TypeScript, You can iterate over iterable objects (including array, map, set, string, arguments object and so on) using for…of loop. To be an iterable, an object must implement the @@iterator method. TypeScript Compiler Configuration TypeScript compiler uses tsconfig.json to get configurat...
// Declare the Employee interface with an optional property 'age'interfaceEmployee{name:string;position:string;age?:number;// Optional property}// Declare the 'employees' array of type Employeeletemployees:Employee[];// Initialize the array with Employee objectsemployees=[{name:"John",position:"Ma...
Let’s say we have an array of objects (each object will represent one dog) and we want to alphabetically sort these objects by the breed property. Let’s see how we can do that.// Define the interface for our objects interface Dog { breed: string; name: string; } const dogs: Dog...
Let's take a look at an example: 1. Let's declare the following array of numbers in the TypeScript playground: const numbers: number[] = []; Here, we have initialized the array as empty. 2. We can add an item to the array by using the array's `push` function. Let's add th...
Write a TypeScript program that creates type aliases for complex data types such as objects or custom types. Use them to define variables and explain how they improve code readability.Sample Solution:TypeScript Code:// Define a type alias for a user object type Student = { id: number; ...
It's useful for filtering arrays and objects based on conditions: // Filter out values that don't match a condition query('map(select(. >= 2))', [1, 5, 3, 0, 7]) // => [[5, 3, 7]] // Find a specific item in an array of objects query('.[] | select(.id == "...
The number type can perform operations such as addition, subtraction, multiplication and division, but boolean cannot. Different types of objects in composite types have different methods, such as Date and RegExp. Different types of variables mean different operations on the variable. ...
object - append JSON.stringified value and set content type to application/json. File/Blob - append it as is. Uint8Array - convert to blob with octet-stream type and append. Array - iterate over the elements and do any of the above with each ⬆️ 👍1 ️1fred...
declare function stringifyAll(...elements: unknown[]): Array<string>; That basically says, “this thing takes any number of elements, and returns an array ofstrings”; however, we’ve lost a bit of information aboutelementsin that transformation. ...
Further, we can use simple for loop to iterate over key values in Map. for(letentryofmapObject.entries()) {letmapKey = entry[0];letmapValue = entry[1];console.log(`Map key is:${mapKey}and value is:${mapValue}`); } Solution 4: Using Array.from() Map entries. ...