Check If a Variable is an Array

Use Array.isArray() to check types. console.log(Array.isArray()); // true #JavaScript #TypeChecking #Tips #javascriptGroup

https://javascriptgroup.com/2025/02/21/check-if-a-variable-is-an-array/?utm_source=mastodon&utm_medium=jetpack_social

Use Object.values() to Get Object Values

Extract all values from an object. console.log(Object.values(user)); #JavaScript #Objects #Keys #javascriptGroup

https://javascriptgroup.com/2025/02/21/use-object-values-to-get-object-values/?utm_source=mastodon&utm_medium=jetpack_social

Convert Strings to Arrays with split()

Split a string by a delimiter. const words = "Hello World".split(" "); console.log(words); // ["Hello", "World"] #JavaScript #Strings #Split #javascriptGroup

https://javascriptgroup.com/2025/02/21/convert-strings-to-arrays-with-split/?utm_source=mastodon&utm_medium=jetpack_social

Get a Random Number in a Range

Generate a random number within a range. const randomNum = Math.floor(Math.random() * (10 - 1) + 1); #JavaScript #Math #Random #javascriptGroup

https://javascriptgroup.com/2025/02/21/get-a-random-number-in-a-range/?utm_source=mastodon&utm_medium=jetpack_social

Convert Arrays to Strings with join()

Turn an array into a comma-separated string. const fruits = ["Apple", "Banana"]; console.log(fruits.join(", ")); // Apple, Banana #JavaScript #ArrayMethods #Join #javascriptGroup

https://javascriptgroup.com/2025/02/20/convert-arrays-to-strings-with-join/?utm_source=mastodon&utm_medium=jetpack_social

Get the Current Date Easily

Use Date to get the current time. const now = new Date(); console.log(now.toISOString()); #JavaScript #Date #Time #javascriptGroup

https://javascriptgroup.com/2025/02/01/get-the-current-date-easily/?utm_source=mastodon&utm_medium=jetpack_social

Flatten Nested Arrays with flat()

Convert a deep array into a single-level array. const nested = ]]; console.log(nested.flat(2)); // #JavaScript #Flat #ArrayMethods #javascriptGroup

https://javascriptgroup.com/2025/02/20/flatten-nested-arrays-with-flat/?utm_source=mastodon&utm_medium=jetpack_social

Shorten switch with Object Lookup

Replace switch statements with an object. const roles = { admin: "Full access", user: "Limited access" }; console.log(roles["admin"]); #JavaScript #Objects #SwitchCase #javascriptGroup

https://javascriptgroup.com/2025/02/20/shorten-switch-with-object-lookup/?utm_source=mastodon&utm_medium=jetpack_social