I have the following code below :
<!DOCTYPE html>
<html>
<head>
<script src="http://connect.soundcloud.com/sdk.js"></script>
<script>
SC.initialize({
client_id: "f520d2d8f80c87079a0dc7d90db9afa9"
});
SC.get("/users/3207",{}, function(user){
console.log("in the function w/ " + user);
});
</script>
</head>
</html>
The code should print the user name to the console however whenever I run this, my console gives the error of :
Failed to load resource: The requested URL was not found on this server:
file://api.soundcloud.com/users/3207?client_id=f520d2d8f80c87079a0dc7d90db9afa9&format=json&_status_code_map%5B302%5D=200
However if I were to directly http://api.soundcloud.com/users/3207.json?client_id=f520d2d8f80c87079a0dc7d90db9afa9, then I get a valid JSON result.
Is there something incorrect with my how I am using the SC.get function?
Thanks
Well, you should test your index.html locally on a web-server like Apache and not by opening it as a file.
Working example
SC.initialize({
client_id: "f520d2d8f80c87079a0dc7d90db9afa9"
});
SC.get("/users/3207", {}, function(user) {
console.log("in the function w/ " + JSON.stringify(user));
var res = document.getElementById("result");
res.innerHTML = JSON.stringify(user);
});
<script src="http://connect.soundcloud.com/sdk.js"></script>
<div id="result"></div>
I am new to JavaScript and Google BigQuery, so please forgive my ignorance. I am trying to write a javascript to collect data from one of the public databases on BigQuery. I found an answer to this at Obtaining BigQuery data from JavaScript code (the code for which I have pasted below) but when I saved the file as .html, replaced the client id and project number with mine, and tried to run it, I get the Authorize button and the page title. I click the Authorize button, and it disappears, but no query is run. Is there something else I was supposed to replace or is there something else I need to make this work? I saved the file as a .html, perhaps I should have saved it with a different extension?
I tried all three ways of creating a client id in the Google developers console and all gave me the same behavior.
I'm sure its just something silly that I am forgetting, but any advice would be greatly appreciated.
Here is the code given by Ryan Boyd, which I am unable to get working properly(which is surely my fault):
<html>
<head>
<script src="https://apis.google.com/js/client.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load('visualization', '1', {packages: ['geochart']});
</script>
<script>
// UPDATE TO USE YOUR PROJECT ID AND CLIENT ID
var project_id = '605902584318';
var client_id = '605902584318.apps.googleusercontent.com';
var config = {
'client_id': client_id,
'scope': 'https://www.googleapis.com/auth/bigquery'
};
function runQuery() {
var request = gapi.client.bigquery.jobs.query({
'projectId': project_id,
'timeoutMs': '30000',
'query': 'SELECT state, AVG(mother_age) AS theav FROM [publicdata:samples.natality] WHERE year=2000 AND ever_born=1 GROUP BY state ORDER BY theav DESC;'
});
request.execute(function(response) {
console.log(response);
var stateValues = [["State", "Age"]];
$.each(response.result.rows, function(i, item) {
var state = item.f[0].v;
var age = parseFloat(item.f[1].v);
var stateValue = [state, age];
stateValues.push(stateValue);
});
var data = google.visualization.arrayToDataTable(stateValues);
var geochart = new google.visualization.GeoChart(
document.getElementById('map'));
geochart.draw(data, {width: 556, height: 347, resolution: "provinces", region: "US"});
});
}
function auth() {
gapi.auth.authorize(config, function() {
gapi.client.load('bigquery', 'v2', runQuery);
$('#client_initiated').html('BigQuery client initiated');
});
$('#auth_button').hide();
}
</script>
</head>
<body>
<h2>Average Mother Age at First Birth in 2000</h2>
<button id="auth_button" onclick="auth();">Authorize</button>
<button id="query_button" style="display:none;" onclick="runQuery();">Run Query</button>
<div id="map"></div>
</body>
</html>
Update: I opened the Developer Tools in Chrome and found this error in the console:
Failed to execute 'postMessage' on 'DOMWindow': The target origin
provided ('file://') does not match the recipient window's origin
('null')
.
I tried editing in my Google Developer console as per these instructions: Google API in Javascript
Still same error.
Looks like you may need to add:
$('#query_button').show();
to the bottom of the auth() function
like so:
function auth() {
gapi.auth.authorize(config, function()
{
gapi.client.load('bigquery', 'v2', runQuery);
$('#client_initiated').html('BigQuery client initiated');
});
$('#auth_button').hide();
$('#query_button').show();
}
Searching for the error you got, I found this page:
Google API in Javascript
Based on the error you're receiving, my guess is that you either do not have your Javascript Origin configured properly on the Google API console you got your Client ID from, and/or you are trying to run your script from the file system instead of through a web server, even one running on localhost. The Google API client, near as I've been able to tell, does not accept authorization requests from the file system or any domain that has not been configured to request authorization under the supplied Client ID. --#citizenslave
It turns out it was a combination of things. I had the Javascript origin not configured properly, I didn't have all the scopes needed for my query, and I couldn't just open the html file in a browser, I needed to create an HTTP server.
So I changed the code to be:
<html>
<head>
<script src="https://apis.google.com/js/client.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load('visualization', '1', {packages: ['geochart']});
</script>
<script>
// UPDATE TO USE YOUR PROJECT ID AND CLIENT ID
var project_id = 'XXXXXXXXXXXX';
var client_id = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.apps.googleusercontent.com';
var config = {
'client_id': client_id,
'scope': 'https://www.googleapis.com/auth/plus.login https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/bigquery'
};
function runQuery() {
var request = gapi.client.bigquery.jobs.query({
'projectId': project_id,
'timeoutMs': '30000',
'query': 'SELECT state, AVG(mother_age) AS theav FROM [publicdata:samples.natality] WHERE year=2000 AND ever_born=1 GROUP BY state ORDER BY theav DESC;'
});
request.execute(function(response) {
console.log(response);
var stateValues = [["State", "Age"]];
$.each(response.result.rows, function(i, item) {
var state = item.f[0].v;
var age = parseFloat(item.f[1].v);
var stateValue = [state, age];
stateValues.push(stateValue);
});
var data = google.visualization.arrayToDataTable(stateValues);
var geochart = new google.visualization.GeoChart(
document.getElementById('map'));
geochart.draw(data, {width: 556, height: 347, resolution: "provinces", region: "US"});
});
}
function auth() {
gapi.auth.authorize(config, function() {
gapi.client.load('bigquery', 'v2', runQuery);
$('#client_initiated').html('BigQuery client initiated');
});
$('#auth_button').hide();
}
</script>
</head>
<body>
<h2>Average Mother Age at First Birth in 2000</h2>
<button id="auth_button" onclick="auth();">Authorize</button>
<button id="query_button" style="display:none;" onclick="runQuery();">Run Query</button>
<div id="map"></div>
</body>
</html>
I fixed my Google Javascript Origins url to be http://localhost:8888/ and my Redirect uri to be http://localhost:8888/oauth2callback, opened a command prompt to run this command from the directory of my html file:
python -m SimpleHTTPServer 8888
and then went to localhost:8888 in my browser and clicked my html file there.
Thanks so much for all the feedback!
It worked perfectly! Now to change the query for my purposes!
I want to receive on an HTML5 website JSON from a PostgreSQL database. So, on the server side I use node-postgres module for DB connection and also express module for communication.
The problem is that in the html i am not seeing any alert when getting the data from the server. The alert isn't even thrown.
this is how my code is so far, for anyone that could help:
serverside
var express = require('express');
var app = express();
app.get('/data', function(req, res){
var pg = require('pg');
var conString = "postgres://postgres:postgres2#localhost/spots";
var client = new pg.Client(conString);
client.connect(function(err) {
if(err) {
res.send('could not connect to postgres');
}
client.query('SELECT * from spots_json where id=3276', function(err, result) {
if(err) {
res.send('error running query');
}
res.set("Content-Type", 'text/javascript'); // i added this to avoid the "Resource interpreted as Script but transferred with MIME type text/html" message
res.send(JSON.stringify(result.rows[0].json));
client.end();
});
});
});
app.listen(3000);
clientside
<!DOCTYPE html>
<html>
<head>
<title>Test</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"></meta>
<meta charset="utf-8"></meta>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.js" ></script>
<script>
$.get('http://localhost:3000/data?callback=?',{}, function(data){
alert(data.type);
},"json");
</script>
</head>
<body>
<div id="map-canvas"></div>
</body>
</html>
The client is now executed on http://localhost:8888/prueba/prueba.html
Im getting a js with the following Response:
"{\"type\":\"Point\",\"coordinates\":[-2.994783,43.389217]}"
The Response can be seen in the following screenshot:
result.rows[0].json is not an object, it is a string. You don't need to stringify it:
res.send(result.rows[0].json);
Edit:
If you use two servers on different ports you will need to use JSONP. jQuery makes this simple on the client side, but you will need to implement it in your server (example):
if(req.query.callback) {
res.send(req.query.callback + '(' + result.rows[0].json + ');');
} else {
res.send(result.rows[0].json);
}
By the way, you need to return if you encounter an error in one of your callbacks to prevent subsequent code from being executed.
if(err) {
res.end('error message');
return;
// Or shorter: return res.end('error message');
}
I'm a new programmer that learn javascript, Im new in js actually.
I have a task that require a web page able to read file in client directory. I've got some js code :
<html>
<script type="text/javascript">
function ReadWeight() {
var filePath = "file:///D:/Text.txt";
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("GET",filePath,false);
xmlhttp.send(null);
var fileContent = xmlhttp.responseText;
alert(fileContent);
}
ReadWeight();
</script>
<body>
</body>
</html>
When I save this code in my directory and access it by this link, It works well.
file:///D:/test.html
But when I put it in my localhost and I access it, the JS doesn't works.
Does my code incorrect when in web server?
Please help me out.
Might I suggest using an error console to display the error so people know how to help you? =] And paste it in your query
Download something like firebug and see if a request is being made (for FireFox)
It looks like you would rather want to access the file via the http:// protocol, instead of file://
As far as I know you can only read client files using an <input type="file"> element. Once you get the file you can read it multiple times:
HTML:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>File Refresh</title>
<script src="filerefresh.js"></script>
</head>
<body>
<input id="fileInput" type="file">
<pre id="fileDisplay"></pre>
</body>
</html>
JavaScript:
(function() {
var sleepInterval = 1000; // 1 second
var fileInput;
var fileDisplay;
var reader;
var id = undefined;
function initialize() {
fileInput = document.getElementById("fileInput");
fileDisplay = document.getElementById("fileDisplay");
reader = new FileReader();
reader.onloadend = function() {
fileDisplay.innerHTML = reader.result;
reschedule();
};
fileInput.addEventListener("change", readFile);
}
function reschedule() {
if (id !== undefined) {
clearTimeout(id);
}
id = setTimeout(readFile, sleepInterval);
}
function readFile() {
reader.readAsText(fileInput.files[0]);
}
window.onload = initialize;
})();
We can exchange strings between our express server and a client website (even cross domain) with this code (works perfectly) :
app.js:
var express = require("express");
var app = express();
var fs=require('fs');
var stringforfirefox = 'hi buddy!'
app.get('/getJSONPResponse', function(req, res) {
res.writeHead(200, {'Content-Type': 'application/javascript'});
res.end("__parseJSONPResponse(" + JSON.stringify( stringforfirefox) + ");");
});
app.listen(8001)
index.html:
<!DOCTYPE html>
<html>
<head>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.js"></script>
<script>
function __parseJSONPResponse(data) { alert(data); }
document.onkeypress = function keypressed(e){
if (e.keyCode == 112) {
var script = document.createElement('script');
script.src = 'http://localhost:8001/getJSONPResponse';
document.body.appendChild(script); // triggers a GET request ??????
}
}
</script>
<title></title>
</head>
<body>
</body>
</html>
We use document.createElement() and document.body.appendChild() to trigger a Get request as the highest voted answer here suggested.
Our question: is it fine to create a new Element with evey request, because we plan to make a lot of requests with this. Could that cause any problems. Or should we clear such an Element after we received the response?