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var text = 'AAA0001 BBB0011 CCC0111 DDD1111'; onlynumbers = text.replace(/[^0-9]/g, ','); noduplicatecomma = onlynumbers.replace(/,[,0]+/g, ','); noleadingcomma = noduplicatecomma.replace(/^,/, ''); cleaned = noleadingcomma.replace(/,$/, ''); alert(cleaned);

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