Move an array element from one array position to another

Question

I\'m having a hard time figuring out how to move an array element. For example, given the following:

var arr = [ \'a\', \'b\', \'c\', \'d\', \'e\'];
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Answer 1

The splice method of Array might help: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/splice

Just keep in mind it might be relatively expensive since it has to actively re-index the array.