一、普通数组去重
Array.from(new Set(expandedKeys))
二、对象数组去重
// b00201 唯一索引
var obj = {}
var arr = threeParamSource.reduce((item, next) => {
obj[next.b00201] ? '' : (obj[next.b00201] = true && item.push(next))
return item
}, [])
console.log(arr)