Helper Functions

Helper functions make complicated or repetitive tasks a bit easier, and keep your code DRY (an acronym for Don’t Repeat Yourself).

• arrayIntersect.js - Get the intersecting values between two arrays.
• buildQuery.js - Build a query string from an object of data.
• cleanHTML.js - Sanitize an HTML string to reduce the risk of XSS attacks.
• decodeHTML.js - Decode HTML entities from an encoded string.
• dedupe.js - Remove duplicate items from an array.
• deepMerge.js - Deeply merge two or more objects or arrays.
• emit.js - Emit a custom event.
• encodeHTML.js - Encode the HTML in a user-submitted string to reduce the risk of XSS attacks.
• getCookie.js - Get the value of a cookie.
• getFlagEmoji.js - Get a country’s flag emoji from its two-letter country code.
• getParam.js - Get the value of a query string from a URL.
• getParams.js - Get all URL parameters from a query string.
• getType.js - More accurately check the type of a JavaScript object.
• parseJWT.js - Decode the payload from a JSON Web Token (JWT).
• randomNumber.js - Get a random integer with a minimum and maximum value.
• randomString.js - Generate, hash, and encode cryptographically random strings.
• range.js - Create a range of numbers between two values.
• serialize.js - Serialize all form data into an object.
• shuffle.js - Randomly shuffle an array.

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