忤御

``` js var arr = []; function extractIds(data){ for(var key in data){typeof data[key]!== "object" ? key==='id'&&(arr.push(data[key])): extractIds(data[key])} return arr; } console.log(extractIds(data)); ``` 如果有错，谢谢指出~

@Xadillax 再套一层了~~ ``` js function extractIds(data){ var arr = []; ex(data); function ex(data){ for(var key in data){typeof data[key]!== "object" ? key==='id'&&(arr.push(data[key])): ex(data[key])} } return arr; } console.log(extractIds(data),extractIds(data)); ```