I have javascript code similar to the following, however when I try to use 'myVar' within foo(), its value is undefined. I've also tried passing the variable into bar() and assigning it directly, but will not pass by reference.
function foo() {
bar();
var myVar = document.getElementById('coords').value;
// myVar should now be (40.7143528, -74.0059731)
alert(myVar); // returns blank
var request = {
location: myVar,
radius: 500,
types: [type] //previously defined
};
//Then send a search request to Google...
}
function bar() {
geocoder.geocode( {'address':address}, function(results, status) {
document.getElementById('coords').value = results[0].geometry.location;
// Let's say the location is NYC (40.7143528, -74.0059731)
alert(document.getElementById('coords').value); //returns the correct value
// however, this pops up after the pop up in function foo()
});
}
with the following HTML
<input type="hidden" id="coords" name="coords"/>
The real code is using Google Maps API if that makes a difference:
bar
runs asynchronously because geocoder
does. That means that
document.getElementById('coords').value = results[0].geometry.location;
actually executes after
var myVar = document.getElementById('coords').value;
You can't use ajax this way. All of your work that relies on results
/status
has to be done in the callback.