Script To Disable Arrow Button When Object Reaches The Canvas Edges?
Dec 13, 2011
I am using the HTML5 canvas element and an image object that I move around the canvas using the arrow buttons.I would like to be able to move the image around until it reaches the top, bottom, or sides of the canvas element. I know that I need to get the position of the x, y positions of the element. I'm just not sure about the logic to compare the elements location to the sides or top or bottom of the canvas. Furthermore, not sure how i would disable to arrow button to prevent me from arrowing the object outside of the canvas.I'm testing in IEMy canvas width is 512 and canvas height is 480The object I'm moving around is an image.png that is 32 X 32I know this isn't much to go on, but I'm having difficulty coming up with how to ask the question
I'm trying to get a next/previous arrow to float over the right/left edges of a slideshow div. I'm using to absolutely positioned divs to contain the next/previous buttons but for whatever reason they refuse to display above the slideshow div. Is there any way to get controllers to float over the cycle container?
Here's my code and if you give it a try you won't see the floating next/previous buttons unless you change the 'top' values for #next_btn and #prev_btn in the CSS to be greater than the height of the image (change to 410 to see them in my example):
Disable Arrow Keys I am creating an online flash gaming site, Aaron's Game Zone: [URL]Some of the games on it use the arrow keys, however IE also uses them to scroll the page. I am learning JavaScript and am trying to write some script to pervent the page scrolling up and down while playing a game.For example.Guardian Rock uses the arrow keys to slide around, at the same time the page scrolls.[URL]
Here is the script I've tried to write to pervent the scrolling:
<script type="text/javascript"> function KeyPressHappened(e){ if (!e) e=window.event;
I got this problem while disabling Up/Down arrow keys in Mozilla firefox browser useing javascript Given a standard HTML select/option box, I can capture any keypress while the select has focus and stop the select�s option list from changing values in IE but not in Mozilla.
[Code]....
In IE and Mozilla I have no trouble capturing the keyCode, and in IE I can prevent pressing a letter "D" and Up/Down arrows from making the list move to Dead, but the select list will drop to �Dead� in Mozilla. I've tried attaching the event handler to keyup, keydown and keypress, but have yet to find a way in Mozila to capture the keypress and prevent the select list from changing the current selection.
I want to create a rectangle with a line in the middle with the canvas object. The problem is that the line in the middle gets bigger than the rest of the rectangle. How do I solve this? I believe it has something to do with shadows. If so, how do I turn them off.
I want to delete some lines on the canvas that i have created in HTML5 (with the <canvas> tag). I know one solution and that is using clearRect() (give this function the HEIGHT and WIDTH of the canvas and you clears the whole canvas.).But i don't want to clear the whole canvas, i only want to delete a few lines made by the function lineTo().
I have a menu in which is applied typeface script. Typeface 0.11 version doesn't support hover on links. There is an experimental version but doesn't work very well for me, so i tried to implement hover by myself. Problem is: hover works pretty well changing canvas context property fillColor and then calling fill(), but the stroke on hovered voice remains on another color. Difficult to explain, so i put some test code online: TEST CODE As you can see, passing with mouse on the menu voices triggers the hover and the element change, but remains bordered in red.
how do they program the "social sharing" div (you'll see it over on the left side), so that it scrolls until it reaches the top of the viewport, then its fixed until it reaches the footer?
I have a message system that I want to prevent double posting. So when a user sends a message i would like to disable the button. But its done using AJAX and will load without much time. But enough to cause double clicking. So now the button needs to be enabled once Text is put in the Form Field.
I created a button with 2 states for mouse-over effects using css sprites. This has always worked well and I have no issues. I recently added some jquery to my buttons to create a smooth transition for the mouse over and this is where I see the issue. When the page is initially loaded the image looks fine. When I hover over the image there is a brief flash of black around the transparent edges then the transition begins and everything looks okay. When I un-hover the image shows the black edges. From this point any time the image is in the un-hovered state the edges are black, and when I hover the black goes away. Example: [URL]
I've implemented Dialog of jQuery UI and set its modal option to true, but object elements (embedded youtube video) were not disabled thus they were even rendered on top of the said dialog.
I have a form with submit button, and i want to disable the button while the request the processing....and then after the request has completed, then again it will be enable....How to implement this, to my form?Is there a way to get the acknowledgment after processing the request...
can anyone please tell me how can i disable or remove the X button(i.e. close button) on the browser. i just want to apply this only to the one web page of my application.
I would like to disable the back button in IE7 and IE8. I assume the best way is to use window.open. I tried below and it disabled the IE back button but doesnt show the menu items, url bar etc.
Code: <a href="#" onClick="window.open(theURL, 'newpage.html', 'fullscreen=yes, scrollbars=auto')">go to page with disabled IE back button</a>;
I am trying to recreate this functionality on my website where you can drag a background image around and when you get ot the edges of the image it bounces back to the edge of that corrosponding side. have a look at the site in question - [url]
So far i have recreated the top left and right edges using
I have created a frameset which is my default page. I am using window.resizeto and window.move to size and position the window on the users screen, but I also need to disable the maximize button on the window.
I know this can be done when using the window.open function as one of it's parameter's, however, as this is my landing page, I need to do this on page load.
Once a button is clicked i would like to disable it for x seconds. The button adds a div to the page and testing has shown excessive clicking can cause issues and halt the script, which is why i want to disable it.
