这里的slice()怎么输出的是myarr1数组 而不是86 是因为返回的字符串么

Question

   var myarr1 = new Array("86","601");        var myarr2 = new Array("20212635");        var myarr3 = myarr1.concat(myarr2);        document.write(myarr3.join("")+"<br>");        document.write(myarr3.slice(0,2));