Simon Willison’s Weblog

Entries tagged javascript in Feb

Filters: Type: entry × Month: Feb × javascript ×


Wouldn’t an ASCII cellular automaton in javascript be the simplest starting point to teach/learn programming?

Absolutely not. The first step in learning to program is understanding that a computer can be quickly made to do something useful by executing lines of code. Personally I’m a big fan of firing up something with an interactive prompt (like Python, or even Firebug or the Google Chrome JS console) and demonstrating that typing a line of code hitting return will get a useful response.

[... 87 words]

How do you change page content and URL without reloading the whole page?

This can only be done using JavaScript. You use XMLHttpRequest to pull in new information from the server (also known as Ajax—most people use a JavaScript library such as jQuery to handle this) and then use the HTML5 history API, in particular the pushState method, to update the URL.

[... 133 words]

How can I parse unquoted JSON with JavaScript?

Unquoted JSON isn’t JSON—the JSON spec requires that strings are quoted (with double quotes, not single quotes).

[... 104 words]

Was CoffeeScript invented to help Ruby programmers get over that dirty yucky feeling they get when working in JavaScript?

The original Prototype JS library might fit that description—more than CoffeeScript, at any rate.

[... 41 words]

How long until Ruby developers are as cheap as PHP developers? is it already happening? should I still learn it or it only has a couple years left and I’m better off with SSJS?

If you want to be a highly paid engineer, you should worry less about your expertise in a specific language and more about developing broad and deep skills across a wider range of development topics.

[... 197 words]

Yahoo! UI JavaScript treats

The Yahoo! Developer Network was updated yesterday with a veritable gold-mine of Exciting New Stuff, coinciding with the launch of the brand new Yahoo! User Interface Blog.

[... 576 words]