Javascript: How to merge the string values of two arrays?

问题

I want to use the _.zip function of Underscore.js to create pairs from two arrays.

var a = ["alpha", "beta", "gamma"];
var b = ["one", "two", "three"];
var pairs = _.zip(a, b);
alert("pairs = " + pairs);

This seems to work fine when done with integers however when using strings the result is confusing:

pairs = 3,3,3,3,3,3

Instead I expect the following result:

pairs = [["alpha", "one"], ["beta", "two"], ["gamma","three"]]

Update:
Thanks to the comments I discovered that the described behavior does apply to Chromium running on Ubuntu. However the expected result is return when I run the same script in Firefox on Ubuntu.

回答1:

I filed a bug for the problem.

来源：https://stackoverflow.com/questions/16426293/javascript-how-to-merge-the-string-values-of-two-arrays