Split and join in JavaScript?

javascript, replace, split

Solution

This would work:

var str = "SHELF-2-1-1".split('-2').join('');

Problem

I have a String "SHELF-2-1-1-2-1", I need to remove "2" from that string and want the output to be "SHELF-1-1-2-1" I tried: ``` var str = "SHELF-2-1-1-2-1"; var res = str.split("-"); ``` How can I join the array to get "SHELF-1-1-2-1"?

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