/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 vote178 views1 answer
How to keep only certian objects python
TypeScript
0 vote199 views1 answer
Typescript how to define class properties to empty
TypeScript
1 vote227 views1 answer
Conditional (click) action angular
TypeScript
0 vote184 views1 answer
Eval)free robux 10
TypeScript
1 vote230 views1 answer
Check all elements in list are false python
TypeScript
4 votes187 views2 answers
When to do manual testing
TypeScript
1 vote255 views1 answer
Typescript jest types not found
TypeScript
0 vote195 views1 answer
Error: running homebrew as root is extremely dangerous and no longer supported. as homebrew does not drop privileges on installation you would be giving all build scripts full access to your system.
TypeScript
0 vote184 views1 answer
Await constructor typescript
TypeScript
0 vote186 views1 answer
Push array elements if not exists mongoose
TypeScript