Dear Alexandre,
Thank you it works now. What is the eval for
actually? Another thing from your experience is this the right method to
retrieve data fast or any other method which can even speed up the data
retrieval. Thank you.
On Tue, Aug 3, 2010 at 3:48 AM, Alexandre Dube <[email protected]> wrote:
> Hi,
>
> Try to add the following before your if statement :
>
> json = eval('(' + json + ')');
>
> Regards,
>
> Alexandre
>
>
>
> On 10-08-02 02:55 PM, ss wrote:
>
>> Dear All,
>> I am not sure if this method of data retrieve is optimal.
>> I have used the method below first I use GDownloadUrl then in the
>> historyLocation.php I have encoded it as echo
>> json_encode(array("Locations"=>$points)); . The only problem when I
>> try to iterate now in the procssHistoryData it gives the error at this
>> line "if (json.Locations.length>0) { " saying that json.Locations is
>> undefined . Just to add on the alert("data : "+json); give me the
>> full data from my php page with out any problem. Thank you.
>>
>>
>>
>> function createMap() {
>> var map = new GMap2(document.getElementById("map"));
>> var lat = 1.285496;
>> var lng = 103.809946;
>> var zoom = 14;
>> map.setCenter(new GLatLng(lat, lng), zoom);
>> getHistoryData()
>> }
>> function getHistoryData()
>> {
>>
>>
>> GDownloadUrl("historyLocation.php",
>> procssHistoryData,
>>
>>
>> "deviceID=12191&dateFrom=2010-08-01&timeFrom=00:00:00&dateTo=2010-08-03&timeFrom=00:00:00",
>> "application/x-www-form-urlencoded");
>>
>> }
>> function procssHistoryData(json)
>> {
>> alert("data : "+json);
>> if (json.Locations.length>0) {
>> for (i=0; i<json.Locations.length; i++) {
>> var location = json.Locations[i];
>> alert("Location is : "+location);
>> }
>> }
>>
>> }
>>
>>
>
>
>
>
> --
> Alexandre Dubé
> Mapgears
> www.mapgears.com
>
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