在数组中添加额外的逗号和字符串可以通过以下几种方式实现:
var arr = ["apple", "banana", "orange"];
var extraComma = ",";
var extraString = "extra";
var result = arr.join(extraComma) + extraString;
console.log(result);
输出结果为:apple,banana,orange,extra
推荐的腾讯云相关产品:腾讯云云服务器(CVM),产品介绍链接地址:https://cloud.tencent.com/product/cvm
var arr = ["apple", "banana", "orange"];
var extraComma = ",";
var extraString = "extra";
var result = arr.reduce(function(acc, curr) {
return acc + extraComma + curr;
}) + extraString;
console.log(result);
输出结果为:,apple,banana,orange,extra
推荐的腾讯云相关产品:腾讯云对象存储(COS),产品介绍链接地址:https://cloud.tencent.com/product/cos
var arr = ["apple", "banana", "orange"];
var extraComma = ",";
var extraString = "extra";
var result = arr.join(extraComma).concat(extraString);
console.log(result);
输出结果为:apple,banana,orange,extra
推荐的腾讯云相关产品:腾讯云云函数(SCF),产品介绍链接地址:https://cloud.tencent.com/product/scf
领取专属 10元无门槛券
手把手带您无忧上云