I'm having a really rough time wrapping my head around prototypes in JavaScript. Previously I had trouble calling something like this: o = new MyClass(); setTimeout(o.method, 500); and I was told I could fix it by using: setTimeout(function() { o.method(); }, 500); And this works. I'm now having a different problem, and I thought ...
Hey, this is the first time I've actually finished writing up a question without SO giving me the answer in the process. :) I've got a nested form (along the lines of Ryan Bates' Railscast tutorial on the topic) which allows users to dynamically add additional fields for adding/removing nested models using Prototype-based javascript. Th...
Hey all, I'm trying to customize a lightbox script (prototype) to make it resize images that are bigger than the viewport. I've successfully inserted a basic proof of concept to resize the lightbox overlay and everything that belongs to it, except for one important detail: the image itself won't resize. I've tried adding the resize fun...
function Person(name) { this.name = name; this.say = function() { console.info('I am ' + this.name); } } var p=new Person('stackoverflow'); Someone tell me that the above codes are equals to : function Person(name) { this.name = name; this.say = function() { console.info('I am ' + this.name); } ...
The following code is lifted directly from the source of the Tie::File module. What do the empty parentheses accomplish in the definition of O_ACCMODE in this context? I know what subroutine prototypes are used for, but this usage doesn't seem to relate to that. use Fcntl 'O_CREAT', 'O_RDWR', 'LOCK_EX', 'LOCK_SH', 'O_WRONLY', 'O_RDONL...
As the title reads, I'm looking for open source alternatives to balsamiq mockup for prototyping. Anyone knows of an equally good alternative that's open source or basically freeware. ...
Hi guys This is my first question on stackoverflow, I have found this site very useful in the past and although I do not have a specific question I would like anyone's input. I love Prototype JS and use it to design my own components frequently, my problem is presenting data to users so they can make a selection, i know all the obvious...
Hi, I've started reading The Pragmatic Programmer, which I am enjoying and learning heaps form but I'm having difficulty understanding the difference between tracer bullets and prototypes. Are tracer bullets like having all of the views of an application there but not yet adding the entire functionality? Thanks ...
Hello, I am attempting to write a JS function (using prototype in rails) that will show hidden divs within a li when that li is mouseover'ed. Each li has a unique id that is a number, like so: <li id="100"> <div style="display:none;" id="hover-display-content">Content</div> <div style="display:none;" id="more-hover-display-content"...
Hi I have the following piece of code: <form action="/fake" > <div id="root"> </div> </form> <script type="text/javascript"> var root = Element.extend($("root")); function addTextControl() { var textCtl = new Element('div', { 'contenteditable': 'true'}).update("Next page"); root.appendChild(textCtl); ...
I am using: Event.observe(window, 'load', function() { $$('li').invoke('observe', 'mouseover', function(event) { this.children[0].toggle(); }); $$('li').invoke('observe', 'mouseout', function(event) { document.children[0].toggle(); }); }); <ul> <li> <div style="display:hidden;">Hidden Div</div> <div>More...