do make arraylist from the array having value by javascript

Question

I have a = [1,2,3,4,5] b = [2,3,5,6,1,7] c = [1,2,43,67,8,7] d = [] e = [] f = [] g = [5,8,9,3] i want x = [a,b,c,g] with use of jquery

i had used probability logic .... so now as its code refactoring time i have to comeup with new logic — annonymous 1
– annonymous 1, Commented Feb 8, 2016 at 13:19
what happens with d, e, f? how should the result look like? — Nina Scholz
– Nina Scholz, Commented Feb 8, 2016 at 13:20

Nina Scholz · Accepted Answer · 2016-02-08 12:53:21Z

1

A solution in plain javascript with Array#filter():

function clean(array) {
    return array.filter(function (a) { return a.length; });
}

var a = [1, 2, 3, 4, 5],
    b = [2, 3, 5, 6, 1, 7],
    c = [1, 2, 43, 67, 8, 7],
    d = [],
    e = [],
    f = [],
    g = [5, 8, 9, 3],
    x = clean([a, b, c, d, e, f, g]);

document.write('<pre>' + JSON.stringify(x, 0, 4) + '</pre>');

answered Feb 8, 2016 at 12:53

Nina Scholz

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Comments

leobelizquierdo · Accepted Answer · 2016-02-08 16:43:39Z

0

Try using JQuery.grep() to filter each array, the first argument is the array to filter, the second is a function to process each item against (the first argument in the function is the item itself and the second is the index), the third argument is used tu invert the filter (optional), so you can select each item that doesn't pass the filter:

var a = [1, 2, 3, 4, 5],
    b = [2, 3, 5, 6, 1, 7],
    c = [1, 2, 43, 67, 8, 7],
    d = [],
    e = [],
    f = [],
    g = [5, 8, 9, 3];

var result = $.grep([a,b,c,d,e,f,g], function(n){return n.length > 0});

document.write('<pre>'+ JSON.stringify(result) +'</pre>')

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>

answered Feb 8, 2016 at 16:43

leobelizquierdo

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2 Comments

leobelizquierdo Over a year ago

Why is not working? JQuery,grep() filter the elements in an array, so you can exclude the empty arrays that you have, this is not what you want?

Mayur Patel Over a year ago

What's wrong with this solution. It's giving you the results without blank array and you want the same. Isn't it?

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