摘要： 1，去掉数组同名字符：var str= ['zzz','abc','def','abc','def','cccc','aaaa','zzzz'];var reg = /\b([^,]+),(?=.*?\b\1\b)/g;alert(str.join(",").replace(reg,""));var str= 'aaa bbb aaa bbb ddd aaa';var reg = /(\S+)\s(?=.*?\b 阅读全文