js 字符串中怎样检测出有多少个逗号？

Question

比如这一段字符串 adas，啊是大,asdasda,asda 这里面有中文逗号和英文逗号，感觉用indexOf有点麻烦，正则能否检测，请示例

let  str = "adas，啊是大,asdasda,asda"
str.indexOf()

Answer 1

最简单的

let str = "adas，啊是大,asdasda,asda";
console.log(str.split(',').length)

Answer 2

let matched = 'adas，啊是大,asdasda,asda'.match(/,|，/g) || [];
// _> matched.length