Software Development Terms Beginning with L
Largest Contentful Paint
Section titled “Largest Contentful Paint”Largest Contentful Paint (LCP) measures how long it takes, from the start of page load, until the browser fully displays the main content requested by the user, such as the largest image or text block.
Google defines an LCP of 2.5 seconds or less as good.
lastIndexOf() JavaScript Array Method
Section titled “lastIndexOf() JavaScript Array Method”lastIndexOf() searches its calling array for the last occurrence of the method’s argument.
lastIndexOf() JavaScript String Method
Section titled “lastIndexOf() JavaScript String Method”lastIndexOf() searches its calling string for the last occurrence of the method’s argument.
Lazy Quantifiers (RegExp)
Section titled “Lazy Quantifiers (RegExp)”Lazy quantifiers are quantifier operators that will automatically find the shortest part of the given string that matches the specified RegExp pattern.
Left-Hand Side Expression in JavaScript
Section titled “Left-Hand Side Expression in JavaScript”A left-hand side expression is a piece of code on the left-hand side of an assignment operator.
Less than Operator in JavaScript
Section titled “Less than Operator in JavaScript”The less than operator (<) checks if its left operand is less than its right-hand one. If so, the Boolean value true gets returned. Otherwise, the computer will return false.
Less than or Equal to Operator in JavaScript
Section titled “Less than or Equal to Operator in JavaScript”The less than or equal to operator (<=) checks if its left operand is less than or equal to the one on the right-hand. If so, the Boolean value true gets returned. Otherwise, the computer will return false.
Lexical
Section titled “Lexical”Lexical refers to the definition of things.
Lexical Scope
Section titled “Lexical Scope”Lexical scope is the definition area of an expression.
Lexicon
Section titled “Lexicon”A lexicon is a dictionary where words are listed and defined.
Library
Section titled “Library”A library is a codebase written to serve as an add-on feature to your application.
Lifecycle (React)
Section titled “Lifecycle (React)”The lifecycle of a React component refers to the series of stages a component instance goes through from its creation to its total removal from the DOM.
Lifecycle Methods (React)
Section titled “Lifecycle Methods (React)”Lifecycle methods are the inbuilt React methods you can use to operate on your components during their lifecycle in the DOM.
Lifting State Up (React)
Section titled “Lifting State Up (React)”Lifting state up is the process of moving states from nested components to their closest common parent.
Linters
Section titled “Linters”Linters are bug catchers that scan through your code with a specific set of coding rules and highlight any coding errors found, such as unused variables, implicit global declarations, and empty block statements.
Installing a linting extension in a text editor allows the editor to show visual indicators, such as colored underlines, to highlight warnings and errors directly within your code.
Below are popular editors and links to their ESLint extensions:
Locally Installed Package
Section titled “Locally Installed Package”A locally installed package is one that you can use only in the project in which you’ve installed it.
Logic in JavaScript
Section titled “Logic in JavaScript”Logic is the analytical action performed by a computer, which often requires the computer to decide if a specific condition is true or false.
Logical Expression in JavaScript
Section titled “Logical Expression in JavaScript”A logical expression is a piece of code that expresses the Boolean values, true or false.
Loop Statement in JavaScript
Section titled “Loop Statement in JavaScript”A loop statement is any piece of code that allows you to repeat a program’s execution easily and quickly.