Javascript value does not assign

Question

i assigned place id here "placeid = results[0].place_id" but it dosen't. it returns me undefined. assignment operation fails there.

function match_up_dn(address)
{
    geocoder = new google.maps.Geocoder();
    var placeid;

    if (geocoder) 
    {
        geocoder.geocode({
            'address': address
        }, function (results, status) {

            if (status == google.maps.GeocoderStatus.OK) {
               console.log("al:-"+results[0].place_id);
                placeid = results[0].place_id;
            }
            else
            {
                alert("undefined address");
            }
        });
    }

    return placeid;
}

i assigned place id here "placeid = results[0].place_id" but it dosen't. it returns me undefined. assignment operation fails there. — Mitul Lakhani, Jun 07 '16 at 08:59
I asked to rewrite, not copy paste the same one line you mentioned in the question. If you can't put up with trying to explain your problem, don't expect anyone to help you solve it. — jitendragarg, Jun 07 '16 at 09:02
problem is the outer function doesn't wait for inner function process complete. here the placeid returns before the inner function assign value to it. @jitendragarg — Mitul Lakhani, Jun 07 '16 at 11:06

Raj Suvariya · Accepted Answer · 2016-06-08T06:42:08.230

0

Try this

function match_up_dn(address)
{
    geocoder = new google.maps.Geocoder();
    var placeid;

        geocoder.geocode({
            'address': address
        }, function (results, status) {

            if (status == google.maps.GeocoderStatus.OK) {
               console.log("al:-"+results[0].place_id);
               placeid = results[0].place_id;
               return placeid;
            }
            else
            {
                alert("undefined address");
            }
        });

}

edited Jun 08 '16 at 06:42

answered Jun 07 '16 at 09:04

Raj Suvariya

249
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@MitulLakhani Try now this will definitely work. – Raj Suvariya Jun 08 '16 at 06:42
Exactly you were not getting output because API call response functions run on background thread so main thread will return null before background thread update the value. Now as you move return statement to background thread it will solve your problem – Raj Suvariya Jun 08 '16 at 06:44
it's works this way. **match_dn(document.getElementById('recipient-address').value);** Not this way **else if(Origin_postal == match_dn(document.getElementById('recipient-address').value))** – Mitul Lakhani Jun 09 '16 at 09:05

Javascript value does not assign

1 Answers1