Question

How to remove empty elements from an array in Node.js

Answer 1

let array = [1, 3, null, "node.js", "", 7, undefined, 9, , , undefined, 0, , 8,];
  
console.log(array);
 
array = array.filter(element => {
  return element != undefined && element != null && element != "";
});
 
console.log(array);

     
     
     
/*
run:
     
[
  1,               3,
  null,            'node.js',
  '',              7,
  undefined,       9,
  <2 empty items>, undefined,
  0,               <1 empty item>,
  8
]
[ 1, 3, 'node.js', 7, 9, 8 ]
     
*/

 

70+ SQL courses for beginners and professionals

Answer 2

let array = [1, 3, null, "node.js", "", 7, undefined, 9, , , undefined, 0, , 8,];
   
array = array.filter(n => n)
  
console.log(array);

  
  
/*
  
[ 1, 3, 'node.js', 7, 9, 8 ]
      
*/
 
 

 

70+ SQL courses for beginners and professionals