There is array (in JavaScript) of items written in the following way:
var arr = [
[1, 2, 'abc', 3, 'cab'],
[3, 4, 'def', 5, 'ghi'],
];
There is a string variable that contains string representation of next item:
var s = "[6, 7, 'new', 8, 'something']";
How can I convert string into a new "item" that can be pushed into 'arr' array?