I'm writing a bunch of scripts that present images serially (e.g. 1 per second) and require the user to make either a keyboard or mouse response. I'm using closures to handle the timing of image presentation and user input. This causes garbage collection to happen pretty frequently and I'm wondering if that will affect the performance (...
Hey guys, I was wondering how to go about form validation in rails. Specifically, here is what I'm trying to do: The form lets the user select an item from a drop down menu, and then enter a number along with it. Using RJS, the record instantly shows up in a table below the form. Resetting the form with AJAX isn't a problem. The issue...
Hello, I'm building a shopping cart and I would like to use a JavaScript function to validate user input when entering the quantity value in the quantity text input. I would like to allow the entering of integer values only (no floats, no other characters). I know that I can apply this function using onKeyUp event and also I found isN...
Hi I want to make an if statement that if the value is not defined then let it go through. I tried if (something != "undefined") and if (something !== "undefined") However it seems to go into the if statement no matter what. If it is undefined it goes through. If it is defined it goes through. Am I doing something wrong? ...
Hi I have created http://techavid.com/design/test3.html and when you load the page you see there are 3 images. The sun image is focused(in color), while the others are greyed out until clicked. That is how it should be for the images. Under each image you see a sentence 1st: Sun, 2nd: Airplane & 3rd: Nano, but when page loads you see...
Not sure if it's possible but how do I read a resource from a url using javascript without ajax? for example, the following url is a static text file containing json encoded text http://mysite.s3.amazonaws.com/jsonencodedcontent.txt I'd like to use javascript to read the content from above link, read the json content into a javascript...
Hello there, I am trying to use php (and if not php, javascript) to link to a page and include a "?type=foo" or "#foo" at the end of the link so that when the linked page loads it will automatically select a specific option, depending on the end of the link, from a dropdown menu in a form. I have tried to search for this but do not know ...
Edit: As Andrew Moore pointed out this question is a duplicate of Two separate script tags for Google Analytics? So this question should be deleted to avoid cluttering Stack Overflow, unless there is a point in keeping this one, since it will probably show up in slightly different searches. What difference does it make to use more than ...
Hi, I need to run a javascript function when the update panel is loaded completely(I want to scroll), and not on initial page load. Please suggest. Thanks ...
Hi, The code below uses javascript to smoothly scroll content in a div. I don't need the smooth scrolling action, and only need the onclick action for the buttons. I would like to use this code so that if a scroll up/down button is pressed, the scroll would instantaneously jump up/down to a position, just like if you were to press the r...
Is it possible to access object properties that can only be accessed with the square bracket notation when inside a "with" statement. Example: var o = { "bad-property": 1, "another:bad:property": 2, "goodProperty": 3 }; with(o) { console.log(goodProperty); // works awesome console.log(???) // how to access "bad:property"? } ...
I'm trying to build an image gallery in Safari that mimics the iPad photo app. It works perfectly, except that once I load more than 6MB or so worth of images either by adding them to the DOM or creating new Image objects, new images either stop loading or the browser crashes. This problem is widespread enough (with everyone else hitting...
hi guys, i wonder if it is possible to create a bookmarklet to click on and the current webpage scrolls to the bottom! javascript:function%20scrollme(){dh=document.body.scrollHeight;ch=document.body.clientHeight;if(dh>ch){moveme=dh-ch;window.scrollTo(0,moveme);}} if i create a new bookmark and paste this as address nothing happens. I ...
My website uses a variety of technologies, such as JQuery, new CSS definitions (e.g., moz-selection, -webkit-user-select), etc. The site works perfectly with Google Chrome and Safari, but has some quirkiness in Firefox, IE, and some of the other browsers. I want to write a script to check for necessary browser features but, with sever...
What is the single fastest method for table row hover css change? I've tried jQuery (onmouseover/out) and CSS with tr:hover, but once I make my page fullscreen (1920x1200) the performance on my grid is getting just sluggish enough to give the entire page a feel of being sub-par. That's on a grid with 25 rows, and some spans and divs per...
Hello, Id like some help changing this javascript onclick event to just load the data on page the page load... Preferably not using the body on load tag... So obviously I'd pre set the var for term inside the script term rather than the excisting on click event.. Hope that made sense <p><a id="keywordlink" href="?term=wombats">Get ke...
My question is somewhat similar to this one. We want to know if there's a way to determine if all javascript has completed (so no javascript is running). We have a lot of stuff that runs on a timeout after the page's onload event, so even after the page is loading, stuff could be happening for a few seconds. For a whole bunch of reasons,...
I'm designing a MongoDB database that works with a script that periodically polls a resource and gets back a response which is stored in the database. Right now my database has one collection with four fields , id, name, timestamp and data. I need to be able to find out which names had changes in the data field between script runs, an...
I'm trying to do a rich text editor for a web application, and I need to be able to mark some elements in the text as uneditable by the user. The reason for this is they're placeholders for dynamic content (like created date) that I want to have a live preview for. Take the following Code as an example - there's no toolbar or anything i...
hi, I have json data like this: {"Adobe Photoshop":"70","Adobe Premier":"71","Animasyon":"72","AutoCAD":"73","Bro\u015f\u00fcr & Bilet":"75","CorelDraw":"76","Flash":"77","Grafik Tasar\u0131m":"68","Karikat\u00fcr":"78","Kartvizit Tasar\u0131m":"79","Logo Tasar\u0131m":"80","Poster":"81","Reklam Tasar\u0131m":"74","Ses D\u00fczenleme":"...