Object Oriented Programming - Make A Round Corners Script
Feb 15, 2012
I am trying to make a round corners script in object oriented programming method. This is purely for learning purposes.
The script is no where near complete but I am already having problems with it.
I am trying out the techniques described in 'David Flanagan ' text book 'JavaScript: The Definitive Guide, 5th Edition'
This code is called from html page which once working will place a round container around element
The selector parameter in Custom_rounded_container function is defined because only the else part of the if statement in Custom_rounded_container is executing. I put this in because few people at other forums thought the problem was because of the selector parameter being undefined.
I just released javascript lib that really helps to develop robust and clear js-scenarios following the OOP directions. The library is compatible with wide range of browsers on different platforms, including Netscape 4.x, Netscape 6.x, Netscape 7.x, Opera 6, Opera 7, Mozilla 1.0, IE 4, IE 5, IE 6.
Trying to figure out OO programming for JavaScript and I'm totally lost.
Here's what I'm trying to do:
I'm posting search data to a PHP form to run a query on a database.
The structure is sort of like this:
So I'm thinking I need to create search objects or arrays. Initially, I thought I could do something like this:
Code:
This doesn't seem to work. It says object not defined whenever I try to do something.
I've also tried creating a JSON object like this:
Code:
This will allow me retrieve the data like I want to:
Code:
The problem is I can't figure out how to add data to the JSON object without manually typing it in. I need to be able to loop through form elements on my HTML page and set them to these variables. I'm using jQuery and doing something like this:
I haven't found in my CSS book how to create a gradient to fill a division tag, and to create a border with round corners.
Is it possible using either CSS or JavaScript? I'd like to create a menu bar with a gradient in the background, and I want the top corners to be a little round with a 5px radius.
I was writing my classes in an old fashion until today when I came across a new design pattern. Javascript is not an established OOP like C++ or Java. It doesn't have any easy way to create classes and to make private/public methods or properties as well as class-constructor. But it could be done in many ways.
My old way of OO design in Javascript was like following:
Code:
Those who were trying to write constructor and access public vars from private or vice versa, you would have probably faced some minor difficulties. But it was doable.
Now, the challenge is how can we make things cleaner and better. Here's the procedure I came up with:
I will be the first to admit, I don't know much about JS and am just starting to wrap my mind around object oriented js. I have this small bit of code that has been giving me problems for days.
playlistItems[numItems-1] = soundManager.createSound({ id : songId, url : $(this).attr('href'), whileloading : player.whileloading, onfinish: next });
"next" is a function on the same object that playlistItems is defined on, but it doesn't ever seem to fire. I tried this.next as well, but it just gives me a runtime error....
I am no expert in javascript. In fact I tend to use just open source when i use it at all but I believe there is a javacript script fro creating rounded corners for boxes? my question is: will this size to the size of someones monitor or viewport?The one i have found is as below. Can anyone tell me whether this script would. If not are there any orthers that do out there?
HTML Code:
function NiftyCheck() { if(!document.getElementById || !document.createElement) { return false;
The problems with the setTimeout and setInterval functions provided in Javascript are twofold. First, you can't call a local object method without losing your scope, and second, you can't pass objects to the function, since the function call is implemented as a string.
The Timer class solves these difficulties by employing a static array to store the parent object and function arguments until the function is called.
This class is provided as-is and pro bono, so go ahead and muck with it if you see things that could be done better.
Thanks to WA for giving me the idea for this (albeit indirectly)!
Updated 4/18/2003: Footprint decreased, minor code improvements. Updated 5/3/2003: Minor comment clarification; no code changes. Updated 5/10/2003: Minor code improvements. // The constructor should be called with // the parent object (optional, defaults to window).
function Timer(){ this.obj = (arguments.length)?arguments[0]:window; return this; }
// The set functions should be called with: // - The name of the object method (as a string) (required) // - The millisecond delay (required) // - Any number of extra arguments, which will all be // passed to the method when it is evaluated.
Timer.prototype.setInterval = function(func, msec){ var i = Timer.getNew(); var t = Timer.buildCall(this.obj, i, arguments); Timer.set[i].timer = window.setInterval(t,msec); return i; } Timer.prototype.setTimeout = function(func, msec){ var i = Timer.getNew(); Timer.buildCall(this.obj, i, arguments); Timer.set[i].timer = window.setTimeout("Timer.callOnce("+i+");",msec); return i; }
// The clear functions should be called with // the return value from the equivalent set function.
I'm trying to convert some Procedural code to be more Object Oriented and I'm stuck...
The page is really simple:
It's just a big picture w/ a caption under it, and a few thumbnail pics off to the side, that when clicked, replace the big picture as well as swap out the caption for a new one.
In the code (external JS file):
I've got 2 arrays:
One that holds the thumbnail image file URLs, and the other that holds the captions.
And a function:
I've created an object prototype that I can instantiate in order to:
1.) create the event: do the actual swapping of the thumbnail, and the changing of the caption.
2.) and attach that event to the thumbnail's link onclick event handler.
The code below is the closest I've come to making it work. The problem is that when I click any of the thumbnail links it only executes the last event instead of the one that corresponds to the link that was just clicked. Hopefully someone can take a look at my code and let me know what I'm doing wrong.
Simplified version of the code:
The x,y,z variable assignments are only in the window.onload function for the sake of clarity, but the event object instantiation block has to be in there for anything to work at all.
I know that the event0,event1,event2 objects work, and are attached to the onclick handler because they will swap the last thumbnail and caption when I click any of the thumbnail links. Of course that's the problem now... any click only activates the last event. It's like it attached the last event to all the onclick event handlers.
In fact, if I only create the event0 object, it works like it's supposed to... but when I create the event1 object, it does what it's supposed to and it takes over for event0. Creating event2 makes it take over for all of them. Each subsequent event# object seems to attach its own addy[ ] and caption[ ] to each previous x[ ] link.
Just started to learn java & came up with the following, but can't get the math.round to work. Anyone able to tell me where I'm going wrong please ? code...
According to the Apple docs, the round arrow in a list means that the next page is the final page. In Jquery, the default is the gray chevron pointing to another list. How do I make the round arrow (arrow in circle) icon appear instead?
I am using the curvycorners.src.js script in order to achieve rounded corners in IE. If you go here: [URL] and then drag and resize your browser screen, you will see that the header and bottom section move out of alignment. When I remove the Curvy Corners script, the issue goes away. For some reason though it is only affecting the home-page of the site (not the sub-pages).
I have anonymous function "xhr.onreadystatechange = function() {}" in the method "this.update" of an object that receives 2 arrays through AJAX. I need these 2 arrays to be assigned to this.images and this.folders, respectively, through this anonymous function. I try to use "var self" technique, but it doesn't work.
I'd like to make a Degree object that inherits from the Number object and uses the Number constructor but adds a .rad() method that returns the value in radians.
If I do something like:
It generally works but I don't get Number's methods like toString and toPrecision.
I am trying to program a script that will output the solution for the towers of hanoi problem, the only problem is that it will not output the solution it just hangs while calculating. Code:
In some pages of my website I use a code like the following:
for (var n = 0; n < getTagsArray("SPAN").length; n++){
//SPAN is just an example. I also use other tags tag = getTagsArray("SPAN")[n];
//make something with tag... }
function getTagsArray(Tag){
if(document.all){ //Internet Explorer return document.all.tags(Tag); } else if (document.layers){ //Netscape eval("return document.tags." + Tag); }}
I want to put all browser-specific code inside the getTagsArray function. So far, I've programmed only for Internet Explorer (my browser), but now I want to make my website visible to all browsers. I'm not sure about the getTagsArray function. Is it right or is there a better way to do the same thing? And how can I extend that function to make it work in other browsers?
Finally, where can I find some information about cross-browser programming? I have the javascript reference for Internet Explorer and Netscape, but I know nothing about other browsers.
I have to develop a program for translating a word in english into pig latin, I have most of it done, it runs but I can't make it define if the first letter see if it's a consonant or not, if it's a consonant take the consonant out and put"ay" at the end and if it's not consonant just put the "ay" at the end of the word, and it has to give an error message if user puts in more than one word, it's done in 2 classes, been stuck on this for hours now have done a lot of research but seems like everyone is doing a more advanced program. Here's my program:
First class public class piglataintran { private String translate;
I'm trying to get borders to display properly with this plugin:On the page it says to use the keep option, but it does not give an option to specify what colour the border should be , if I specify the type of border in a stylesheet: like (border:1px solid #d4d4d4;) it shows the border great in firefox, but in ie6 and 8 it shows the border but not to the contours of the rounded box (ie square)
I've downloaded the curvy corners codes from the following address: http:[url]....
The instructions in the curvycorners.src.js file say that all i need to do is add the following piece of code which I've inserted into the head section:
