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Web-Related Terms Beginning with P

Package

package is a directory (or project) that has a package.json file used to record information about it.

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package.json

package.json is a file that package managers—like NPM and Yarn—use to store information about your project.

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package-lock.json

package-lock.json is a file that NPM uses to record the exact version of all the packages you've installed locally to your project's node_modules directory.

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Package Manager

A package manager is a tool developers use to automatically find, download, install, configure, upgrade, and uninstall a computer's packages.

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Package Registry

A package registry is a database (storage) for thousands of packages (libraries, plugins, frameworks, or tools).

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Parameter (JS)

A parameter specifies the name you wish to call your function's argument.

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Parameter (URL)

A parameter (query string) allows you to send specific data to the server.

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Parent Module (ES Module)

A parent module is an aggregator file used solely to aggregate and re-export submodules.

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parseInt()

parseInt() parses and converts its string argument from its radix state to a decimal integer.

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Period (RegExp)

Regular expression's period operator (.) specifies that you wish to find any character that is not the newline or any other line terminator characters.

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pop() in JavaScript

pop() removes its calling array's last item.

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Port (URL)

A port is a technical gate on a website's server from which browsers can access a site's resources.

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Positive Lookahead (RegExp)

Regular expression's positive lookahead operator (p(?=sp)) asserts that you wish to find a RegExp pattern that is followed by another pattern.

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Positive Lookbehind (RegExp)

The positive lookbehind operator ((?<=sp)p) asserts that you wish to find a RegExp pattern that is preceded by another pattern.

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Primary Expression (JS)

A primary expression is a piece of code that serves as the basis for creating other expressions.

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Primitive Data (JS)

Primitive data is any plain JavaScript value that you can use to program a webpage and its content.

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Program

A program is a list of instructions written for a computer to execute.

Promise (JavaScript)

A JavaScript promise refers to the object you create from JavaScript's built-in constructor function—called Promise.

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Properties Object (JavaScript)

A properties object is an element you can use to bundle up multiple named values into a single item.

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Pure Function

A pure function is a function without any side effects.

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push() in JavaScript

push() adds its arguments to the end of its calling array and returns the calling array's new length.

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