JavaScript, JavaScript
06 Apr 2010 |
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javascript
blogs
javascript
blogs
JavaScript, JavaScript is a blog by Angus Croll in which he discusses high-level JavaScript concepts and techniques. Recent articles include tutorials on closures, throw, and curry.
It’s a blog that’s worth following if you’re interested in improving your JavaScript fundamentals.
var undefined = true
This post on reddit is amusing: var undefined = true; /* the best way to screw up whole javascript apps */.
It’s not really as bad as it sounds because most of us do this:
if (typeof made_up_variable === 'undefined') { alert("it's cool, I'm cool.") }
The other way would be to write the following:
var magic_var;
if (magic_var == undefined) { alert('undefined!'); }
undefined = true;
magic_var = true;
if (magic_var == undefined) { alert('undefined!'); }
This has the worrying outcome of displaying undefined for both cases.
