I am trying to run this very example of a treemap on localhost, but I can't load the JSON file (which, by the way, is the same JSON file that the example uses).
The console returns the next error in Google Chrome:
XMLHttpRequest cannot load file:///C:/Users/Usuario/Downloads/d3/flare.json. Cross origin requests are only supported for HTTP.
The JSON file is in the same folder as the html file.
Thanks in advance for your help.
You cannot load local files because of the security policy. To quote the D3 website:
When developing locally, note that your browser may enforce strict permissions for reading files out of the local file system. If you use d3.xhr locally (including d3.json et al.), you must have a local web server. For example, you can run Python's built-in server:
python -m SimpleHTTPServer 8888 &
or for Python 3+
python -m http.server 8888 &
Once this is running, go to http://127.0.0.1:8888/.
If people working d3.js on the xampp or wamp they can run their html file as like php file by starting the server.
I found the same issue then I started the wampp server then the file get loaded successfully without any issue like "XmlHttpRequest Access control allow orgin".
I am working in WAMP. I hope same thing for XAMPP, but I am not sure...
Related
When passing across a file location from eel to JavaScript, the image fails to load due to this error:
index.html:1 Not allowed to load local resource: file:///C:/Users/dave/Desktop/tools-and-utensils.png
Does the Eel python library allow the use of local files since it is running on a local host and not a web server? If so, how can I combat this? JavaScript is reading the path from a JSON string to load in the file.
Perhaps try to move the python file TO the desktop and just call "tools-and-utensils.png"
I am trying to download text file from server to local directory.
If I execute following curl command it copies myfile.txt from server and saves in same directory as newfile.txt.:
curl -o newfile.txt http://myserverip/myfile.txt
I want to automate this by running the command from javascript while loading the webpage.
For example if I open an html page (which runs a javascript) like http://myserverip/getnewfile.html in the browser the myfile.txt from the server should be copied to newfile.txt in the loacl directory.
Can anyone help me to write javascript to execute the curl command?
Please note that the server in local area network and router is configured to allow connections only from white-listed mac ids of local machines so there is no any authentication required to connect to server.
You can't run local command-line commands from JavaScript, because that would be a massive security vulnerability. The tool you want to use for this is either window.open (to open a tab with the file in order to cause the browser to download it) or the fetch API (to retrieve the file for use in JavaScript).
am getting the following error please help mejavascript ,
angular.min.js:103 XMLHttpRequest cannot load file:///C:/Users/DELL/Documents/jmyangularjsprojects/myangularjsprojects/login.html. Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https, chrome-extension-resource.(anonymous function) # angular.min.js:103
I believe you are trying to run your application from your local file system, rather than using a web server. My first recommendation for you is to host the files on a web server.
If you are using Chrome, it won't let you do cross origin requests, you cannot load file:/// and instead you need to use http:// protocol at all times.
Use this workaround for chrome as a temporary fix.
Find the path where you installed Chrome and do
> "C:\PathTo\Chrome.exe" --allow-file-access-from-files
XMLHttpRequest can not load file means you can not parse an external data file (ex csv file). This is for security reason inside Chrome. However, to be able to download your data using d3.csv, you must follow the following steps:
Open you anaconda command window (Anaconda Prompt) (test Python is working)
Go to the directory where is your html file (cd xxx/xxx/xxx/index.html)
Run the following command: python -m http.server (in Python 3)
You will see: Serving HTTP on 0.0.0.0 port 8000 (http://0.0.0.0:8000/).
Open a Chrome: http://localhost:8000
Then execute Ctrl + Shift I to open the development window, then click on Console to see your csv data.
This will solve your problem. Hope this will help.
I'm just learning d3, and I'm attempting to import data from a CSV file, but I keep getting the error "XMLHttpRequest cannot load file:///Users/Laura/Desktop/SampleECG.csv. Cross origin requests are only supported for HTTP. ". I've searched for how to fix this error and have ran it on a local web server, but I haven't found a solution that works for d3.v2.js. Here's a sample of the code:
var Time = []
ECG1 = []
d3.csv("/Desktop/d3Project/Sample.csv", function(data)
{
Time = data.map(function(d) {return [+d["Time"]];});
ECG1 = data.map(function(d) {return [+d["ECG1"]];});
console.log(Time)
console.log(ECG1)
});
Any help will be much appreciated.
This confused me too (I am also a d3 beginner).
So, for some reason, web browsers are not happy about you loading local data, probably for security reasons or something. Anyways, to get around this, you have to run a local web server. This is easy.
In your terminal, after cd-ing to your website's document root (thanks #daixtr), type:
python -m SimpleHTTPServer 8888 &
Okay, now as long as that terminal window is open and running, your local 8888 web server will be running.
So in my case, originally the web page I was working on was called
file://localhost/Users/hills/Desktop/website/visualizing-us-bls-data-inflation-and-prices.html
When I opened it in chrome. To open up my page on my local web server, I just typed (into the chrome search bar):
http://localhost:8888/Desktop/website/visualizing-us-bls-data-inflation-and-prices.html
Now, reading in CSVs should work. Weird, I know.
To those using built-in python webserver and who are still experiencing issues, do REMEMBER and make sure that you run the "python -m SimpleHTTPServer 8888" invocation at the correct path of which you consider to be your DocumentRoot. That is, you cannot just run 'python -m SimpleHTTPServer 8888' anywhere. You have to actually 'cd /to/correct/path/' containing your index.html or data.tsv and then from there run 'python -m SimpleHTTPServer 8888'.
Also, just learning D3 for school work. I was trying to run this simple D3 example:
https://gist.github.com/d3noob/b3ff6ae1c120eea654b5
I had the same problem as OP re: loading data using Chrome browser. I bet the great solution Hillary Sanders posted above was re: Python 2.X.
My answer is re: Python 3.X [OS: Ubuntu 16x]:
Open a terminal window within the root directory of your project, then run:
python3 -m http.server
It will serve HTTP on port 8000 by default unless it is already taken, in that case to open another port, e.g. 7800, run:
python3 -m http.server 7800
Then, on your Chrome browser address bar type:
localhost:8000
The above worked for me because I only had an index.html page in my root folder. In case, you have a HTML page with a different name, type the whole path to that local HTML page and it should work also. And, you should be able to see the graph created from the data set in my link (that must be in a folder like data/data.csv). I hope this helps. :-)
Use Firefox, idk what Chrome tries to accomplish
In my application statics files are loading from proxy server I want to load one JS file from my localhost so that I can edit and test it with my production app.
For example:-
www.staticserver.com/39349/file.js
localhost/xyz/file.js
can I do it in /etc/hosts file or any browser plug-in ?
To do this do you need a local http server running in your machine test :-)
Search and install Wamp Server if are trying to do this in windows, if are in linux, install Apache server