从对象数组中获取索引

Question

I am using the openweather api for a project and the data fluctuates based on what time of day you view it. So, I am trying to loop through the first 8 objects to find a dt_txt = to 12:00:00. I need to assign the result to a var so I can then increment that by 8.

here is how the data comes (first index only):

0:
dt: 1579316400
main: {temp: 271.29, feels_like: 259.49, temp_min: 271.29, temp_max: 272.35, pressure: 1026, …}
weather: [{…}]
clouds: {all: 100}
wind: {speed: 13.55, deg: 147}
snow: {3h: 5}
sys: {pod: "n"}
dt_txt: "2020-01-18 03:00:00"
__proto__: Object 

my attempt:

for (let i = 0; i < 8; i++) {
  if ((response.list[i].dt_txt).substring(11) === "12:00:00") {
    var noon = indexOf("12:00:00")
    console.log(noon);

Thanks in advance!

Edit I thought I was missing something obvious!

Working code:

for (let i = 0; i < 8; i++) {
                if ((response.list[i].dt_txt).substring(11) === "12:00:00") {
                    var noon = response.list[i]
                    console.log(noon);
                    var noon2 = response.list[i + 8]
                    console.log(noon2);

Answer 1

Have a read on Javascript Array methods ( https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter )

eg filter will return the object from the list that meets your criteria. const result = response.list.filter(res => res.dt_txt === "12:00");

or findIndex will return the index of the search.