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  • Using max-width = 100% and max-height = 100% on an image, calculate the display width/height

    - by NatalieMac
    I am creating a slideshow for images of various sizes to display centered vertically and horizontally within a canvas area. In my CSS, I set the width and height of the image to 100% so that each image would proportionally fill the canvas. I want the canvas to auto-size itself to fit within the viewer's screensize as the original size of the images is quite large (up to 800 pixels tall). I am using jQuery 1.4, and using the height of the image to calculate the top value for absolute positioning it to the middle of the canvas. I have tried using jQuery to get the .height(), innerHeight(), and outerHeight(), but it always gets the full size of the image. I extracted the DOM element from the jQuery object and tried using .width, .offsetWidth, and .clientWidth, but that too always seems to return the full size of the image. Firebug displays the correct dimensions, so I know there's some way of calculating the actual display height of the image, I just can't figure out what it is. How do you get the actual display height of an image if you've set max-height = 100%? I didn't want to have to calculate and set the height of each image in the js, but if I have to, I will. It just seems like I should be able to set the canvas size and have the images auto-adjust.

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  • "[object Object]" passed instead of the actual object as parameter

    - by Andrew Latham
    I am using Heroku with a Ruby on Rails application, and running from Safari. I have the following Ajax call: $.ajax({ type : 'POST', url : '/test_page', data : {stuff: arr1}, dataType : 'script' }); arr1 is supposed to be an array of objects. There's a console.log right before that, and it is: [Object, Object, Object, Object, Object, ...] However, I got an error on the server side when I made this ajax call. The logs showed 2012-10-01T03:13:34+00:00 app[web.1]: Parameters: {"stuff"=>"[object Object]"} 2012-10-01T03:13:34+00:00 app[web.1]: WARNING: Can't verify CSRF token authenticity 2012-10-01T03:13:34+00:00 app[web.1]: NoMethodError (undefined method `to_hash' for "[object Object]":String): 2012-10-01T03:13:34+00:00 app[web.1]: Completed 500 Internal Server Error in 1ms I'm unable to replicate the error. It's really confusing to me - what would cause that string to sometimes be passed to the server instead of the object?

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  • Most useful techniques for two way data binding with js

    - by Perpetualcoder
    With abundance of web services and client side templating features of jQuery and likes, creating mashups or sites consuming a multitude of web services and posting data back to these services is becoming exceedingly popular. For a page of decent size with this kind of architecture, say a dashboard. What are the useful techniques of maintaining this client side state. In other words whats are some of the ways to do two way databinding? Sample scenario: Get Data From Service as JSON/XML Display/Bind on UI Capture User Input Recreate request from the UI controls/html Post Data To Service Get Response and Rebind

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  • Expand and collapse a div

    - by user494118
    I have a list of itens and they are holding images, each image is 800w x 600 H. The original div height is 800 W x 300 H, I figured out how to expand the div when it is clicked, but i want to know how to collapse it when you click it while it is already expanded. right now it just expands the div even farther $('.expand').bind('click', function() { var currHeight = $(this).css('height').replace(/px/,''); currHeight = currHeight * 1; var newHeight = currHeight + 500; $(this).animate({ height: newHeight },1000); }); any idea on how to create an if else statement that would say, IF the div is already expanded then collapse on click, or if the div is not expanded, expand to # of px.

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  • Nav drop down with rounded corner troubles...

    - by Jonah1289
    Hi I have worked on the following nav drop down seen here http://charmcitykids.missionmedia.net/. It works and is almost complete, but I have one issue. When you mouseover a nav title the text goes from color to black and then shows the dropdown. That is how it should work, but when you move your mouse to go a nav title within the dropdown the black text(active image) goes back to color and doesnt remain black. Any suggestion when dropdown is active and user is navigating through such to keep the text(active image) black? thnx jonah

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  • Recommendations on Triming Large Amounts of Text from a DOM Object

    - by aronchick
    I'm doing some in browser editing, and I have some content that's on the order of around 20k characters long in a <pre>. So it looks something like: <pre> Text 1 Text 2 Text 3 Text 4 [...] Text 20,000 </pre> I'd like to use jquery to trim it down when someone hits a button to chop, but I'm having trouble doing it without overloading the browser. Assume I know that the character numbers are at 16,510 - 17,888, and what I'd like to do is trim it. I was using: jQuery('#textsection').html(jQuery('textarea').html().substr(range.start)); But browsers seem to enjoy crashing when I do this. Alternatives?

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  • innerHTML doesn't work correctly with xhtml in Chrome

    - by Desperadeus
    Hi! I've got a trouble with Chrome5.0.375.70, but FF 3.6.3 and Opera 10.53 are OK. Below is the line of code: document.getElementById('content').innerHTML = data.documentElement.innerHTML; The data object from the code is a document (typeof(data) == 'object') and I've got it by ajax request to chapter01.xhtml: <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html [ <!ENTITY D "&#x2014;"> <!ENTITY o "&#x2018;"> <!ENTITY c "&#x2019;"> <!ENTITY O "&#x201C;"> <!ENTITY C "&#x201D;"> ]> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Alice's Adventures in Wonderland by Lewis Carroll. Chapter I: Down the Rabbit-Hole</title> <link rel="stylesheet" type="text/css" href="style.css"/> <link rel="stylesheet" type="application/vnd.adobe-page-template+xml" href="page-template.xpgt"/> </head> <body> <div class="title_box"> <h2 class="chapnum">Chapter I</h2> <h2 class="chaptitle">Down the Rabbit-Hole</h2> <hr/> </div> The Chrome cuts all before body and as a result link to css in header is missed; user can't see formatted text and images. How can I fix it or bypass?

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  • Google Maps 3.0 - Sometimes after removing markers, they stay around...

    - by ewindsor
    Sometimes when I remove markers they stay around in a "ghost" fashion -- they are clickable but there's no more icon. This is not every time and usually only happens when I remove more than one at a time. Here's my code for removing markers: for(var i in markers) { google.maps.event.clearListeners(markers[i], "click"); markers[i].setMap(null); markers[i] = null; delete markers[i]; } The only way to guarantee that they get removed 100% of the time is to move the map to another position. Then when I move it back they are gone 100% of the time. Thanks for your help.

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  • Google Docs in iframe AND Save & Close button

    - by Shishant
    Hello, I am using Google Docs in my project using its API. I am loading docs in modal window iframe using http://fancybox.net/ a jquery plugin It works fine but when in Google Docs Save and Close button is press, it closes the iframe and redirects the current page to Google Docs, So is there any way I can prevent the redirection to Google Docs and just close the modal window? Thank You.

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  • JS and Rails site wide announcements

    - by pcasa
    Tried doing http://davidwparker.com/2008/09/17/site-wide-announcements-in-rails-using-jquery-jgrowl/ Am really bad with JS. Think I am messing up on the last part where it says "This code goes in your application.js file (somewhere in $(function){ //here })" Am I not suppose to do a link_to_function and create a function with this code that references that link? Really lost on this one.

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  • jquery version of array.contains

    - by morgancodes
    Can jquery test an array for the presence of an object (either as part of the core functionality or via an avaible plugin). Also, I'm looking for something like array.remove, which would remove a given object from an array. Can jquery handle this for me? thanks, -Morgan

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  • JQuery Validate: only takes the first addMethod?

    - by Neuquino
    Hi, I need to add multiple custom validations to one form. I have 2 definitions of addMethod. But it only takes the first one... here is the code. $(document).ready(function() { $.validator.addMethod("badSelectionB",function(){ var comboValues = []; for(var i=0;i<6;i++){ var id="comision_B_"+(i+1); var comboValue=document.getElementById(id).value; if($.inArray(comboValue,comboValues) != 0){ comboValues.push(comboValue); }else{ return false; } } return true; },"Seleccione una única prioridad por comisión."); $.validator.addMethod("badSelectionA",function(){ var comboValues = []; for(var i=0;i<6;i++){ var id="comision_A_"+(i+1); var comboValue=document.getElementById(id).value; if($.inArray(comboValue,comboValues) != 0){ comboValues.push(comboValue); }else{ return false; } } return true; },"Seleccione una única prioridad por comisión."); $("#inscripcionForm").validate( { rules : { nombre : "required", apellido : "required", dni : { required: true, digits: true, }, mail : { required : true, email : true, }, comision_A_6: { badSelectionA:true, }, comision_B_6: { badSelectionB: true, } }, messages : { nombre : "Ingrese su nombre.", apellido : "Ingrese su apellido.", dni : { required: "Ingrese su dni.", digits: "Ingrese solo números.", }, mail : { required : "Ingrese su correo electrónico.", email: "El correo electrónico ingresado no es válido." } }, }); }); Do you have any clue of what is happening? Thanks in advance,

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  • Java script button

    - by Deven
    hello friends i am developing button which generate another button and this button also calls function in which its id is passed as argument but i am getting error that id is undifined even i set its id attribute before it is added to ma web page

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  • PHP Code to Generate Simple Flowchart

    - by revbackup
    I am making a flowchart out the subjects in the curriculum of our school. a flowchart is generated through its preRequisite.... for example FIRST YEAR FIRST SEMESTER SUBJECTS ---- PREREQUISITE MATH 1 ---- NONE MATH 2 ---- NONE ENGL 1 ---- NONE SOCIO 1 ----- NONE POLSCI 1 ----- NONE FIRSTE YEAR SECOND SEMESTER SUBJECTS ---- PREREQUISITE MATH 3 ----- MATH 1 MATH 4 ----- MATH 2, MATH 1 ENGL 2 ----- ENGL 1 POLSCI 2 ----- POLSCI 1 So, I must print it this way, just using simple PHP but difficult Logic.: MATH1 -----> MATH3 -----> MATH4 MATH 2 ----->MATH 4 ENGL1 -----> ENGL 2 SOCIO 1 POLSCI 1 -----> POLSCI 2 Can anyone give me a good algorithm for this, because this is really difficult. I am planning to echo the results in an HTML table, and it makes it more complicated. Do you have suggestions how to solve this problem properly and display the results also properly???? Thank you in advance!

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  • How can you get a list or traversable tree of bookmarks from within a Firefox Extension?

    - by Nathan
    I am working on a simple Firefox Extension, and I need a list of the user's bookmarks. I have found the nsINavBookmarksService class which appears to be the recommended way of manipulating bookmarks since Firefox 3.0. Strangely I don't see a method that I could use to get a list of all the bookmarks in a folder. I need some way of creating a flat list of all the Bookmark URIs, but without any methods that return information about more than one bookmark I don't see a way to do it.

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  • Modifying jQuery ajax request Connection header

    - by Pat
    I'm trying to modify the Connection header with the following code with no success jQuery.ajax({ url: URL, async: boolVariable, beforeSend: function(xhr) { xhr.setRequestHeader("Connection", "close"); } }) The request headers via Firebug show: Connection keep-alive X-Requested-With XMLHttpRequest Any odd bugs/problems with setting this particular header known? Or is there something I'm doing wrong?

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