/TypeScript/How to Remove undefined Values From a JavaScript Array?

How to Remove undefined Values From a JavaScript Array?

Js remove undefined from array

const a = [3,,null, false, undefined, 1];

// Remove falsey
a.filter(Boolean);
 
// Remove specific (undefined)
a.filter(e => e !== undefined);

How to Remove undefined Values From a JavaScript Array?

// ES6+
const arr = [1, undefined, 2, 3, undefined, 5];

const filteredArr = arr.filter((elem) => elem !== undefined);

console.log(filteredArr); // output: [1, 2, 3, 5]

Source: designcise.com

Similar codes

0 vote352 views1 answer
Link to other components angular
TypeScript
0 vote292 views1 answer
Typescript dynamic array key
TypeScript
0 vote386 views1 answer
Cannot find module 'dotenv' or its corresponding type declarations
TypeScript
0 vote321 views1 answer
Do feral cats have rabies?
TypeScript
1 vote326 views1 answer
How to remove list dots in li bootstrap
TypeScript
-1 vote351 views1 answer
Flutter border between expansiontile
TypeScript
3 votes316 views2 answers
Lua print all elements table
TypeScript
1 vote319 views1 answer
Nuxt "AxiosRequestConfig"
TypeScript
8 votes334 views2 answers
See conda enviroments
TypeScript
0 vote325 views1 answer
React-jsonschema-form is not assignable to type 'JSONSchema6'
TypeScript