javascript利用indexOF()函数统计数组arr("a","b","d","d","c","d...答:function f(i, indexes){ var j = arr.indexOf('d', i); if(j == -1) return indexes; indexes.push(j); return f(++j, indexes);}var arr = ["a","b","d","d","c","d","d"];var indexes = f(0, []);console.log("'d' 出现了:" + indexes....
Javascript程序设计中数组取数问题答:Untitled Document var arrA=["a1","a2","a3","a4","a5","a6","a7","a8","a9","a10","a11","a12","a13","a14","a15","a16","a17"];//声明数组 function generateNum(){//定义函数 var i,j,k;var arrB=new Array();i=Math.floor(Math.random()*17);//生成0到...