JS正则判断多个连续相同字符

var reg1 = /(\\w)\\1\\1/g; //判断2个连续字符
var reg2 = /(\\w)\\1{2}/g; //判断3个连续字符
var reg3 = /(\\w)\\1\\1/g;  //判断3个连续字符
 
var str = \'[email protected]#123AaAaAAA3\';
 
str.match(reg1); // 输出[\'aa\',\'AA\']
str.match(reg2); // 输出[\'AAA\']
str.match(reg3); // 输出[\'AAA\']

//reg2和reg3表达的意思相同