request for the JavaScript regex for pattern

following is the string i have and i would like to read the number "10" (last inside the () )using regex. I am开发者_StackOverflow中文版 using Javascript.

"test me 234 and the (another) and test (10)"

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Something like this:

var str = "test me 234 and the (another) and test (10)";
result = str.match(/\((\d+)\)$/);
console.log(result[1]);