John Resig - Keeping Passwords in Source Control
I learned a neat tip from my co-worker, Craig Silverstein (more on Craig joining Khan Academy), recently and I thought others might find it to be useful. It has to deal with the eternal question: How do you store sensitive configuration options (such as usernames, passwords, etc.) in source control? Typically what I’ve done is to just punt on the problem entirely. I create a dummy configuration fi
John Resig - Deep Profiling jQuery Apps
This evening I was playing around with the idea of profiling jQuery applications – trying to find a convenient way to completely analyze all the code that is being executed in your application. I’ve come up with a plugin that you can inject into a jQuery site that you own and see how the performance breaks down method-by-method. Here’s how you can try this plugin on your own site: Step 1: Copy sit
John Resig - Simple JavaScript Inheritance
I’ve been doing a lot of work, lately, with JavaScript inheritance – namely for my work-in-progress JavaScript book – and in doing so have examined a number of different JavaScript classical-inheritance-simulating techniques. Out of all the ones that I’ve looked at I think my favorites were the implementations employed by base2 and Prototype. I wanted to go about extracting the soul of these techn
John Resig - Simple “Class” Instantiation
This is another trick that I’ve been using for a while to simplify Class-style instantiation of a function in JavaScript. Take a look at the following code, for example: function User(first, last){ this.name = first + " " + last; } var user = new User("John", "Resig"); Pretty straight-forward. Now let’s look at a couple quirks of Class-style instantiation that can cause issues, but can be easily r
John Resig - Cross-Window Messaging
Another new feature from the HTML 5 specification, that just landed for Firefox 3, is the cross-origin postMessage API. This particular API adds a new method to every window (including the current window, popups, iframes, and frames) that allows you to send textual messages from your current window to any other – regardless of any cross-domain policies that might exist. Specifically, you’re given
Learning Advanced JavaScript
Double-click the code to edit the tutorial and try your own code. This tutorial contains code and discussion from the upcoming book Secrets of the JavaScript Ninja by John Resig. Our Goal Goal: To be able to understand this function: // The .bind method from Prototype.js Function.prototype.bind = function(){ var fn = this, args = Array.prototype.slice.call(arguments), object = args.shift(); return
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