| // | |
| // This server will start a bash shell and expose it | |
| // over socket.io to a browser. See ./term.html for the | |
| // client side. | |
| // | |
| // You should probably: | |
| // | |
| // npm install socket.io | |
| // curl -O https://github.com/LearnBoost/Socket.IO/raw/master/socket.io.min.js | |
| // |
| function sanitizeJSON(unsanitized){ | |
| return unsanitized.replace(/\\/g, "\\\\").replace(/\n/g, "\\n").replace(/\r/g, "\\r").replace(/\t/g, "\\t").replace(/\f/g, "\\f").replace(/"/g,"\\\"").replace(/'/g,"\\\'").replace(/\&/g, "\\&"); | |
| } |
| <!DOCTYPE html> | |
| <script src="http://mbostock.github.com/d3/d3.v2.js?2.8.1"></script> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> | |
| <style> | |
| body { | |
| font: 10px sans-serif; | |
| } | |
| rect { |
| 3 ways to define a JavaScript class | |
| Introduction | |
| JavaScript is a very flexible object-oriented language when it comes to syntax. In this article you can find three ways of defining and instantiating an object. Even if you have already picked your favorite way of doing it, it helps to know some alternatives in order to read other people's code. | |
| It's important to note that there are no classes in JavaScript. Functions can be used to somewhat simulate classes, but in general JavaScript is a class-less language. Everything is an object. And when it comes to inheritance, objects inherit from objects, not classes from classes as in the "class"-ical languages. | |
| 1. Using a function | |
| This is probably one of the most common ways. You define a normal JavaScript function and then create an object by using the new keyword. To define properties and methods for an object created using function(), you use the this keyword, as seen in the following example. | |
| function Apple (type) { |
| $ redis-cli | |
| > config set stop-writes-on-bgsave-error no |
| #!/usr/bin/env python | |
| """ | |
| 2020 update: | |
| - More iterators, fewer lists | |
| - Python 3 compatible | |
| - Processes files in parallel | |
| (one thread per CPU, but that's not really how it works) | |
| """ |
| var isoCountries = { | |
| 'AF' : 'Afghanistan', | |
| 'AX' : 'Aland Islands', | |
| 'AL' : 'Albania', | |
| 'DZ' : 'Algeria', | |
| 'AS' : 'American Samoa', | |
| 'AD' : 'Andorra', | |
| 'AO' : 'Angola', | |
| 'AI' : 'Anguilla', | |
| 'AQ' : 'Antarctica', |
| var swap = function (array, pos1, pos2) { | |
| var temp = array[pos1]; | |
| array[pos1] = array[pos2]; | |
| array[pos2] = temp; | |
| }; | |
| var heapsPermute = function (array, output, n) { | |
| n = n || array.length; // set n default to array.length | |
| if (n === 1) { | |
| output(array); |
Below are many examples of function hoisting behavior in JavaScript. Ones marked as works successfuly print 'hi!' without errors.
To play around with these examples (recommended) clone them with git and execute them with e.g. node a.js
(I may be using incorrect terms below, please forgive me)
