javascript - json data extraction in pebbleJS -


i stuck in json data extraction in pebble. 

var ui = require('ui'); var ajax = require('ajax');  var url="http://ws.audioscrobbler.com/2.0/?method=user.gettopartists&user=test&api_key=4a9f5581a9cdf20a699f540ac52a95c9&limit=10&format=json&callback=?"; var card = new ui.card({   title:'last.fm stat',   subtitle:'fetching...' }); card.show();  ajax({ url: url }, function(data){   var topartist=data.topartists[0].artist.name;   card.subtitle(topartist); });

here's error get:

[info] ocess_manager.c:368: heap usage app <lastfm sta: total size <48584b> used <6256b> still allocated <28b> [phone] pebble-app.js:?: (+) [card 1] : [card 1]  [phone] pebble-app.js:?: javascript error: typeerror: cannot read property '0' of undefined     @ pebble-js-app.js:123:32     @ pebble-js-app.js:871:17     @ req.onreadystatechange (lib/ajax.js:11

4:9)

evening mona,

  1. remove question mark @ url's end.

  2. remove card.show() instruction put it, , place after adding subtitle it.

  3. specify you're dealing json datatype.

and final code should this:

var ui = require('ui'); var ajax = require('ajax');  var url="http://ws.audioscrobbler.com/2.0/?method=user.gettopartists&user=test&api_key=4a9f5581a9cdf20a699f540ac52a95c9&limit=10&format=json&callback="; var card = new ui.card({     title:'last.fm stat',     subtitle:'fetching...' });  ajax({ url: url, type: 'json' }, function(data) {     var topartist = data.topartists.artist[0].name;     card.subtitle(topartist);     card.show(); });

it should run perfectly. :)

also, should add failure callback in ajax method:

ajax({object}, success, failure)

Comments

Post a Comment

Popular posts from this blog

javascript - Using jquery append to add option values into a select element not working -

i'm looking dynamically populate select element names of items stored array. for reason it's not working , i'm not sure why. html: <div class="col-md-4 col-md-offset-4"> <select class="select1"> </select> , <select class="select2"> </select> </div> note i'm using bootstrap layout. here's jquery i'm using try , populate ".select1" jquery: select: function() { $.each(state.greens, function(index, value) { $(".select1").append("<option value =' " + index + " '>" + state.greens[index].name + "</option>"); }); } note function 'select' stored within object called 'display'. state.greens name of array i'm trying access. so @ end of html page call display.select(); call function. no error messages showing in console. also, saw question: appending
Read more

Android soft keyboard reverts to default keyboard on orientation change -

i'm building android soft keyboard , can't seem fix bug - have arabic , qwerty keyboard , when rotate device on qwerty keyboard (or arabic shift), it's if program has "restarted" , becomes arabic keyboard without shift. the onsaveinstancestate(bundle savedinstancestate) not work because application not extend activity inputmethodservice . i put following in android manifest android:configchanges="keyboard|keyboardhidden|orientation" android:windowsoftinputmode="stateunchanged|adjustresize"> i tried using @override public void onconfigurationchanged(configuration newconfig) { super.onconfigurationchanged(newconfig); log.i(mydebug, "config changed " + currentkeyboard.equals(qwerty)); } however, currentkeyboard.equals(qwerty)) results false , made sure true before orientation change. any appreciated. i think applications fault. if application restarting on orientation change
Read more

Rendering JButton to get the JCheckBox behavior in a JTable by using images does not update my table -

i rendering jbutton image on simulate jcheckbox behavior. why don't let jtable render jcheckbox? because need bigger checkboxes , there's no way can resize them (as far know). so, have own table cell renderer , editor. both renders jbutton , checkbox images on them. trying change image checked image unchecked image (or vice versa) , update cell value (boolean true or false). however, reason, getcelleditorvalue() not update table. so, release mouse, value goes original one. any appreciated! lot! public class tableexample extends jframe { jscrollpane pane; jpanel panel; jtable table; object[][] data; mytablemodel tm; renderer buttoncolumn; public tableexample(object[][] data) throws ioexception { string[] columns = {"column#1", "column#2", "column#3", "column#4", "column#5", "column#6"}; this.data = data; this.setpreferredsize(new dimension(700, 500));
Read more