JavaScript实现找质数代码分享

function zhishu(num) {  if (num == 1) {    return false;  }  if (num == 2) {    return true;  }  for (var i = 2; i <= Math.sqrt(num); i++) {    if (num % i == 0) {      return false;    }  }  return true;}

var zhishuArray = [];for (var j = 1; j < 100000; j++) {  if (zhishu(j)) {    zhishuArray.push(j);  }}console.dir(zhishuArray);