javascript - jQuery scrollTo - Center Div in Window Vertically -


i have site uses fixed menu on top of page.

when link clicked, should scroll vertically center of target div aligns vertical center of window, offset height of header. - important div centered no matter resolution of monitor is

i'm using jquery , scrollto, can't figure out math needed this.

here's attempt:

function scrollto(target) { var offset; var scrollspeed = 600;  if (viewport()["width"] > 767 && !jquery.browser.mobile) {     // offset anchor location , offset navigation bar if navigation fixed     offset = $(target).offset().top - document.getelementbyid('navigation').clientheight; } else {     // offset anchor location since navigation bar static     offset = $(target).offset().top; }      $('html, body').animate({scrolltop:offset}, scrollspeed); }

eventually figured out. being dumb math. offset fixed header , footer well, works resolutions.

    // scrollto: smooth scrolls target id function scrollto(target) {     var offset;     var scrollspeed = 600;         var wheight = $(window).height();         //var targetname = target;         //var windowheight = $(window).height();         //var pagecenterh = windowheight/2;         //var targetheight = document.getelementbyid(targetname).offsetheight;      if (viewport()["width"] > 767 && !jquery.browser.mobile) {         // offset anchor location , offset navigation bar if navigation fixed         //offset = $(target).offset().top - document.getelementbyid('navigation').clientheight;                 offset = $(target).offset().top - $(window).height() / 2 + document.getelementbyid('navigation').clientheight + document.getelementbyid('footer').clientheight;     } else {         // offset anchor location since navigation bar static         offset = $(target).offset().top;     }      $('html, body').animate({scrolltop:offset}, scrollspeed); }

Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more