怎么将angular4中三次返回的数据放到一个数组中?

Question

Answer 1

this.recordList.push(...v.recordList)

Answer 2

this.serveice.request().map(response => response.json()).subscribe(v=>{});

Answer 3

去掉this.recordList = null是不是就可以了？每次初始化数据都把recordList也清空了，白push了