//replace all var str:String="AAABBBCCCAAA"; str=str.split("AAA").join("DDD"); //结果str为:DDDBBBCCCDDD //replace first var str:String="AAABBBCCCAAA"; str=str.replace("AAA","DDD"); //结果str为:DDDBBBCCCAAA
//replace all var str:String="AAABBBCCCAAA"; str=str.split("AAA").join("DDD"); //结果str为:DDDBBBCCCDDD //replace first var str:String="AAABBBCCCAAA"; str=str.replace("AAA","DDD"); //结果str为:DDDBBBCCCAAA