CODEWITHSUNDEEP
javascriptjqueryarraysnode.js
Dilip G
Dilip G

Reputation: 529

How to remove all empty array inside an array

I have resultant array like this,

[["apple","banana"],[],[],[],["kiwi"],[],[]]

How can I remove all the empty [] array so that my resultant array would look like this:

[["apple","banana"],["kiwi"]];


var array = [["apple","banana"],[],[],[],["kiwi"],[],[]];// sample array

Upvotes: 11

Views: 15871

Answers (5)

Aristoo
Aristoo

Reputation: 11

the bottom_line; pass any value that is considered falsey in the filter function and it'll be filtered out

const array = [["apple","banana"],[],[],[],["kiwi"],[],[]];

var result =  array.filter(e => e[0]);

console.log(result);

Upvotes: 1

Dude
Dude

Reputation: 339

Use the following code:

var newArray = array.filter(value => JSON.stringify(value) !== '[]');

Upvotes: 3

Akhil Arjun
Akhil Arjun

Reputation: 1137

The ES5 compatible code for @kukuz answer.

var array = [["apple","banana"],[],[],[],["kiwi"],[],[]];// sample array

var result =  array.filter(function(x){return x.length});
console.log(result);

Upvotes: 5

kukkuz
kukkuz

Reputation: 42352

Use Array.prototype.filter to filter out the empty arrays - see demo below:

var array = [["apple","banana"],[],[],[],["kiwi"],[],[]];// sample array

var result =  array.filter(e => e.length);
console.log(result);

In ES5, you can omit the arrow function used above:

var array = [["apple","banana"],[],[],[],["kiwi"],[],[]];// sample array

var result =  array.filter(function(e) { 
  return e.length;
});
console.log(result);

Upvotes: 17

Jai
Jai

Reputation: 74738

Use Array.prototype.filter() to get a new filtered array: 

var array = [["apple","banana"],[],[],[],["kiwi"],[],[]];
var newArr = array.filter(function(obj){
   return obj[0] !== undefined;
});

console.log(JSON.stringify(newArr, 0, 0));

Upvotes: 3

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