把一个数组forEach循环出来的值用“,”拼接起来

const list = [{type: "string", value: "字符串一"}, {type: "string", value: "字符串二"}, {type: "string", value: "字符串三"}]
const newList = []
list.forEach(arg => {
　　newList.push(arg.value)
})

const str = newList.join(",")
console.log(str)   // 字符串一,字符串二,字符串三