Remove empty row from array in javascript

Question

I am trying to check and remove any empty row in my table mapped to an array in javascript.

Sample array would be like below.

Now this array is having 4 rows and 3rd one is empty which I want to remove. How to do that. I tried using if(adata[i]) is not null, but that wont work since an indivdual value can be null. i want to check for complete row being null

Are you asking how to delete an element in an array? Array.splice is probably what you are looking for. — romellem
– romellem, Commented Jul 5, 2016 at 17:00

kevin ternet · Accepted Answer · 2016-07-14 12:29:25Z

2

This short code should match your requirement :

var input = [[1,,3], [11,, ,12], [,,,,,], [37,38,39]];
var result = input.filter(element => element.join("") != "");
console.log(result); // [ [ 1, , 3 ], [ 11, , , 12 ], [ 37, 38, 39 ] ]

Edit : for ES5 you'll write rather

var result = input.filter(function(element) {return element.join("") != ""});

edited Jul 14, 2016 at 12:29

answered Jul 5, 2016 at 19:18

kevin ternet

4,6322 gold badges21 silver badges27 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Justin Over a year ago

Yes all lines are seperated by a '\n' since it is copied from a excel.I was able to parse and add values into array. Now want to remove empty record. The record '7 8 9' should come at index 2 now.

Justin Over a year ago

@Kevin: I get an error if I use var result = input.filter(element => element.join("") != ""); Error is:element not defined

kevin ternet Over a year ago

Strange Justin, would we have different interpretor ? That works perfectly on my plateform. What plateform do you test on ?

Justin Over a year ago

I am using eclipse Mars on windows7.

kevin ternet Over a year ago

I also use Eclipse Mars with the plugin ENIDE for Node.js and that works fine. but you can write this instead var result = input.filter(function(element) {return element.join("") != ""});

Collectives™ on Stack Overflow

Remove empty row from array in javascript

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related