zip two arrays Javascript [duplicate]

Question

I have two arrays in javascript:

var array1 = ["a","b","c"]; var array2 = ["e","f","g"];

And I want the resulting array to be like this:

array3 = ["a","e","b","f","c","g"];

Any way to do this?

Would that be the same stackoverflow.com/questions/4874818/… ? — Michael
– Michael, Commented May 31, 2013 at 7:38
What you want is not concatenation. You have confused at least four people with that title (three answerers and me). — John Dvorak
– John Dvorak, Commented May 31, 2013 at 7:42
Sorry I thought it counted as a concatenation too... I don't know the right word for what I want — salamey
– salamey, Commented May 31, 2013 at 7:45

Andrius Naruševičius · Accepted Answer · 2013-05-31 07:39:10Z

7

Will a straightforward loop do it?

array3 = new Array(); for(var i = 0; i < array1.length; i++) { array3.push(array1[i]); array3.push(array2[i]); }

answered May 31, 2013 at 7:39

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1 Comment

Answer could be more robust, if you have different length arrays for instance.

Santosh Panda · Accepted Answer · 2013-05-31 07:52:54Z

You can try with concat() method:

var array1 = ["a","b","c"]; var array2 = ["e", "f","g"]; var array3 = array1.concat(array2); // Merges both arrays

For your specific requirement, you have to follow this:

function mergeArrays(a, b){ var ret = []; for(var i = 0; i < a.length; i++){ ret.push(a[i]); ret.push(b[i]); } return ret; }

Thomas Junk · Accepted Answer · 2013-05-31 08:04:48Z

This should work:

function zip(source1, source2){ var result=[]; source1.forEach(function(o,i){ result.push(o); result.push(source2[i]); }); return result }

It was not concatenation, so the answer changed.

Perhaps you would like to use: http://underscorejs.org/#zip