在全局变量jquery中存储API数据

var position= $.getJSON( "http://ip-api.com/json", function( data ) {
  position =  {lon: data.lon, lat: data.lat}
  return position;
});
 var lon = position.lon;
 var lat = position.lat;
console.log(lon);

How can I getvariables from async functions to become global?

如何从异步函数变为全局变量？

3 个解决方案

#1

Try this, this is work good way

试试这个，这是好方法

window.onload = function() {
set();
setTimeout(get,2000);;
};
function set() {
$.getJSON( "http://ip-api.com/json",function(data) {
var position = {"lon": data.lon,"lat": data.lat};
document.getElementById("id").value= position;
});
}
function get() {
var k = $("#id").val();
console.log(k);

}

#2

I figured it out. I made the ajax function to not be async like this:

我想到了。我让ajax函数不像这样异步：

$.ajax({
async: false,
url: "http://ip-api.com/json",
success: function(data) {
console.log(data);
position = { lon: data.lon, lat: data.lat };
}
});

#3

don't use var when declaring variables that you you want to be global

在声明要使用全局变量的变量时，请不要使用var

#1