The it() function is defined by the jasmine testing framework, it is not part of angular per se. You'll see it in angular's documentation because they are encouraging you (for good reason) to get in the habit of writing tests for your code, and demonstrating how the code will work in a test.

Sep 5, 2018 · The it(...) function defines a test case (aka a "spec"). describe("A suite", function() { it("contains spec with an expectation", function() { expect(true).toBe(true); }); }); Note that AngularJS E2E Testing..... uses Jasmine for its test syntax.

Oct 12, 2023 · The JavaScript it() is a part of one of its testing frameworks named jasmine. Basically the core convention is to redeem an expected output range from a large pile of code.

A JavaScript function is a block of code designed to perform a particular task. A JavaScript function is executed when "something" invokes it (calls it).

Apr 15, 2025 · Functions in JavaScript are reusable blocks of code designed to perform specific tasks. They allow you to organize, reuse, and modularize code. It can take inputs, perform actions, and return outputs. A function definition is sometimes also termed a function declaration or function statement.

Jan 18, 2019 · Create React App uses Jest as its test framework. The it function takes a string as a descriptor which lets the user name their tests and find them easily in the case of failure. The arrow function is the actual test code. Example: return x+y; expect(add(2,2)).toEqual(4);

Jul 15, 2024 · In JavaScript, every function is actually a Function object. Creates a new Function object. Calling the constructor directly can create functions dynamically but suffers from security and similar (but far less significant) performance issues to eval().

JavaScript functions are defined with the function keyword. You can use a function declaration or a function expression. Earlier in this tutorial, you learned that functions are declared with the following syntax: Declared functions are not executed immediately.

Mar 7, 2025 · Broadly speaking, JavaScript has four kinds of functions: For every kind of function, there are multiple ways to define it: In addition, there are special syntaxes for defining arrow functions and methods, which provide more precise semantics for their usage.

A function declaration in JavaScript is a way to define a function. It’s also known as a function statement. The function keyword is used, followed by the name of the function, a list of parameters in parentheses, and the function body enclosed in curly braces.