How can I (or what tools are available) for drawing a line between two or more elements to connect them? Any combination of HTML/CSS/JavaScript/SVG/Canvas is fine.  If your answer supports any of these, then do mention it:   draggable elements drag...
I'm using AJAX to update some values in a database.  All has worked wonderfully with that, but now I would like to implement some logging stuff.  The logging functions look like they are going to take a fair amount of processing time, and theirs...
I created a socket server using websocket module with this configuration taken from this example (with some changes):      var WebSocketServer = require('websocket').server; var http = require('http');  var server = http.createServer(...
Althought this question was asked more than one year ago, it's still relevant for me. I'm also trying to provide more information to make this not just a duplicate. As stated in the original question - if you connect to a MongoDB database wit...
I am developing a site in which I have used LinkedIn JavaScript API for creating account and add LinkedIn Connections as Friends.  I have got all the connections from the LinkedIn on my page, but how can I add them as friends with each other.  I am s...
How to calculate approximately the connection speed of a website using JavaScript?  I want to create a javascript widget like, which will calculate the speed opening the current opened page.  I am asking if this can be done using just javascript and...
I'm using a js library inside a PhoneGap application for iPhone. I don't know what other external sites my js library contacts, so I need a way of whitelisting all connections, just for testing. How do I do that?  My app just silently fails,...
I am looking for an algorithm or sample solution for drawing connection lines between rectangles. In my case rectangles are elements Gantt chart and connections show depenedencies. I am using the Raphael JS library to draw rectangles and lines. So a...
Trying to open a WebSocket connection from a Browser to a server running on localhost:9000 here is my JS code:  $( document ).ready(function() {      var url = "ws://localhost:9000/myapp";     var connection = new WebSocket(url);      connect...
I want to handle a lot of (> 100k/sec) POST requests from javascript clients with some kind of service server. Not many of this data will be stored, but I have to process all of them so I cannot spend my whole server power for serving requests onl...

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