// 方法一，正则判断var ary = new Array("111","222","33","112","222");alert(mm(ary))// 验证重复元素，有重复返回true；否则返回falsefunction mm(a){ return /(\x0f[^\x0f]+)\x0f[\s\S]*\1/.test("\x0f"+a.join("\x0f\x0f") +"\x0f");}
