Question

我正在尝试在axios的中更改变量值。这是我的示例：

var pts = [];

  axios.get('http://www.example.com')
    .then(function (response) {
      pts = response.data;
    });

  console.log(pts);

pts变量仅返回空数组。我只想在GET查询中使用它。我该如何更改？

Answer 1

该请求是异步的，因此先打印pt，然后调用该函数

您可以做的是使用诺言，并按以下方式提出您的要求：

const func1 = () => {
    return axios.get("http://www.example.com").then(response => {return response})
}

func1().then(data => {
    pts = data;
})

Answer 2

使用新的优雅方式ArrayList<Location> GenLocations = new ArrayList<Location>(); public void firstEvent(){ for(int i = 0; i < GenLocations.size(); i++) { Location L = GenLocations.get(i); if(event.getClickedBlock().getLocation().equals(L)) { //Non-relevant code... } } } public void secondEvent(){ if(searchInventory(event.getWhoClicked().getInventory(),"Too big name", 8, true)) { /* Here is where I want the correct XYZ coord from GenLocations.get(i). It is hard to tell whether GenLocations.get(i) is the right position without if(event.getClickedBlock().getLocation().equals(L)){} or going through a bunch of if statements comparing the data of arrays with the current event which is pain staking long and possibly inefficient /* } }和mymap<-st_read("county.shp")%>% st_transform(crs = 4326) str(mymap) library(leaflet) # map the polygons in shp mymap %>% leaflet() %>% addTiles() %>% addPolygons()，它更加简洁易读

async

如何在Axios响应中更改变量值？

2 个答案: