api: provided by steamspy http://www.steamspy.com/api.php

$.ajax({
    url:"http://www.steamspy.com/api.php?request=appdetails&appid=730",
    type:"GET",
    success(res){
        console.warn(JSON.parse(res))
    }
})

Access to XMLHttpRequest at" http://www.steamspy.com/api.p." from origin "null" has been blocked by CORS policy: No" Access-Control-Allow-Origin" header is present on the requested resource.
the front end could not make a direct request, so I used php to request it. As a result, I reported a 503