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  • Multiple circles -> One Polygon?

    - by Josh
    Using Google Maps API v3, I was able to create multiple google.maps.Circle objects on my map. However, I now need to "connect" them somehow. I have the following map with multiple circles: I now need to get it to look something like this: I've looked all over the Internet for solutions, but to no avail. Any ideas?

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  • Only show activities from a specific gadget in OpenSocial

    - by corné
    I created a gadget which is able to post activities: function postActivity(text) { var params = {}; params[opensocial.Activity.Field.TITLE] = text; var activity = opensocial.newActivity(params); opensocial.requestCreateActivity(activity, opensocial.CreateActivityPriority.HIGH); }; And I request activities by doing: req.add(req.newFetchActivitiesRequest( new opensocial.IdSpec({'userId' : 'VIEWER', 'groupId' : 'FRIENDS'})), 'friends_activities'); My question is: How can I filter activities to only show activities posted by a specific gadget? I reckon the field "appId" is meant for this, but this field is empty in the response.

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  • Finding zoom level from window object properties

    - by Mihai Fonoage
    Hi, I want to find out the zoom level of what is being displayed in a browser window based on the javascripts' window object properties (http://www.javascriptkit.com/jsref/window.shtml) to which I have access. I just can't seem to find the right mathematical formula for the zoom based on the inner width, page offset, etc. I found a solution, but that uses the document.body.getBoundingClientRect call which does not return anything in my case and for which I can't tell if there's a suitable replacement from the window properties. I am using Safari. Thank you, Mihai

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  • how do arguments work with dojo.connect?

    - by sprugman
    I've read the docs, but I must be missing something. I've got a grid, I want to connect to the event that fires when the column headers are clicked for sorting, thus: dojo.addOnLoad(function(){ var grid = dijit.byId("grid"); dojo.connect(grid, "setSortInfo", 'afterSort'); }); function afterSort() { console.info('after sort'); } That works fine as far as it goes. I know the setSortInfo method has an argument which is the column number. How do I get that value? I've tried putting a parameter in the sig for afterSort to no avail. The docs say "the method receives the same arguments as the event", but where are they???

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  • Mootools - how to destroy a class instance

    - by Rob
    What I'm trying to do is create a class that I can quickly attach to links, that will fetch and display a thumbnail preview of the document being linked to. Now, I am focusing on ease of use and portability here, I want to simply add a mouseover event to links like this: <a href="some-document.pdf" onmouseover="new TestClass(this)">Testing</a> I realize there are other ways I can go about this that would solve my issue here, and I may end up having to do that, but right now my goal is to implement this as above. I don't want to manually add a mouseout event to each link, and I don't want code anywhere other than within the class (and the mouseover event creating the class instance). The code: TestClass = new Class({ initialize: function(anchor) { this.anchor = $(anchor); if(!this.anchor) return; if(!window.zzz) window.zzz = 0; this.id = ++window.zzz; this.anchor.addEvent('mouseout', function() { // i need to get a reference to this function this.hide(); }.bind(this)); this.show(); }, show: function() { // TODO: cool web 2.0 stuff here! }, hide: function() { alert(this.id); //this.removeEvent('mouseout', ?); // need reference to the function to remove /*** this works, but what if there are unrelated mouseout events? and the class instance still exists! ***/ //this.anchor.removeEvents('mouseout'); //delete(this); // does not work ! //this = null; // invalid assignment! //this = undefined; // invalid assignment! } }); What currently happens with the above code: 1st time out: alerts 1 2nd time out: alerts 1, 2 3rd time out: alerts 1, 2, 3 etc Desired behavior: 1st time out: alerts 1 2nd time out: alerts 2 3rd time out: alerts 3 etc The problem is, each time I mouse over the link, I'm creating a new class instance and appending a new mouseout event for that instance. The class instance also remains in memory indefinitely. On mouseout I need to remove the mouseout event and destroy the class instance, so on subsequent mouseovers we are starting fresh.

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  • generate random opacity number using math random

    - by TechyDude
    I am trying to generate a random number for the css opacity. This is what I tried so far. CSS .test{ position : absolute; width : 15px; height : 15px; border-radius:15px; background-color : black; }? Script $(function() { for (var i = 0; i < 300; i++) { $("<div>", { class: "test", css: { opacity: randomOpacity } }).appendTo("body"); } function randomOpacity() { var opac = 0; opac = Math.random() < 1; console.log(opac); } randomize(); });? The Fiddle

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  • Make a div fall off the page

    - by Daniel Hertz
    Hey, So I have been playing with jQuery for a good time now and I'm trying to get an effect to work properly. I have a main square div in the middle of the page and when someone clicks a link I want the box to look like its falling off the page and disappear, revealing a new page behind it. I'v been playing with the easing plugin but I can seem to get what I want to work. Basically I have the div's top margin or just top distance increased to a large number. However, this just makes the div fall but it also expands my page and its just much lower on the page. I basically want the div to fall out of site and not change the dimensions of the site. Anyone know how to do that? Thanks! Danny

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  • Java script Gallery - how to show a next image with an arrow - shiftImg(1)

    - by Srikanth Naidu
    //html file Image slideshow </script>   Loading image. Please wait 1     1/12 2/12 3/12 4/12 5/12 6/12 7/12 8/12   // //JS File var displayWaitMessage=true; // Display a please wait message while images are loading? var activeImage = false; var imageGalleryLeftPos = false; var imageGalleryWidth = false; var imageGalleryObj = false; var maxGalleryXPos = false; var slideSpeed = 0; var imageGalleryCaptions = new Array(); function startSlide(e) { if(document.all)e = event; var id = this.id; this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '_over.gif'; if(this.id=='arrow_right'){ slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5); slideSpeed = -1*slideSpeedMultiply; slideSpeed = Math.max(-10,slideSpeed); }else{ slideSpeedMultiply = 10 - Math.floor((e.clientX - this.offsetLeft) / 5); slideSpeed = 1*slideSpeedMultiply; slideSpeed = Math.min(10,slideSpeed); if(slideSpeed<0)slideSpeed=10; } } function releaseSlide() { var id = this.id; this.getElementsByTagName('IMG')[0].src = 'images/' + this.id + '.gif'; slideSpeed=0; } function gallerySlide() { if(slideSpeed!=0){ var leftPos = imageGalleryObj.offsetLeft; leftPos = leftPos/1 + slideSpeed; if(leftPos>maxGalleryXPos){ leftPos = maxGalleryXPos; slideSpeed = 0; } if(leftPos<minGalleryXPos){ leftPos = minGalleryXPos; slideSpeed=0; } imageGalleryObj.style.left = leftPos + 'px'; } setTimeout('gallerySlide()',20); } function showImage() { if(activeImage){ activeImage.style.filter = 'alpha(opacity=50)'; activeImage.style.opacity = 0.5; } this.style.filter = 'alpha(opacity=100)'; this.style.opacity = 1; activeImage = this; } function initSlideShow() { document.getElementById('arrow_left').onmousemove = startSlide; document.getElementById('arrow_left').onmouseout = releaseSlide; document.getElementById('arrow_right').onmousemove = startSlide; document.getElementById('arrow_right').onmouseout = releaseSlide; imageGalleryObj = document.getElementById('theImages'); imageGalleryLeftPos = imageGalleryObj.offsetLeft; imageGalleryWidth = document.getElementById('galleryContainer').offsetWidth - 80; maxGalleryXPos = imageGalleryObj.offsetLeft; minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd').offsetLeft; var slideshowImages = imageGalleryObj.getElementsByTagName('IMG'); for(var no=0;no<slideshowImages.length;no++){ slideshowImages[no].onmouseover = showImage; } var divs = imageGalleryObj.getElementsByTagName('DIV'); for(var no=0;no<divs.length;no++){ if(divs[no].className=='imageCaption')imageGalleryCaptions[imageGalleryCaptions.length] = divs[no].innerHTML; } gallerySlide(); } function showPreview(imagePath,imageIndex){ var subImages = document.getElementById('previewPane').getElementsByTagName('IMG'); if(subImages.length==0){ var img = document.createElement('IMG'); document.getElementById('previewPane').appendChild(img); }else img = subImages[0]; if(displayWaitMessage){ document.getElementById('waitMessage').style.display='inline'; } document.getElementById('largeImageCaption').style.display='none'; img.onload = function() { hideWaitMessageAndShowCaption(imageIndex-1); }; img.src = imagePath; } function hideWaitMessageAndShowCaption(imageIndex) { document.getElementById('waitMessage').style.display='none'; document.getElementById('largeImageCaption').innerHTML = imageGalleryCaptions[imageIndex]; document.getElementById('largeImageCaption').style.display='block'; } function shiftImg(imageIndex){ } window.onload = initSlideShow;

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  • Custom Icon for Marker Clusterer

    - by Nyxynyx
    I am using Marker Clusterer library for Google Maps API V3. Now that I have the clusterer working, I want to change the default icon to a custom one. Prorblem: When I try to set the style property of the marker clusterer, the default icon still appears. Where did I go wrong? JS Code // Marker Clusterer var styles = {styles: [{ height: 53, url: "http://localhost/mywebsite/images/template/markers/cluster.png", width: 53 }, { height: 56, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m2.png", width: 56 }, { height: 66, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m3.png", width: 66 }, { height: 78, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m4.png", width: 78 }, { height: 90, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m5.png", width: 90 }]}; var mcOptions = {gridSize: 50, maxZoom: 15, styles: styles[styles]}; mc = new MarkerClusterer(map, [], mcOptions);

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  • How to catch mousewheel up/down event using RaphaelJs

    - by alex.dominte
    I need to implement a horizontal scrollable timeline. I've drawn the timeline/grids/rulers etc. I just need to catch mousewheel up/down to scroll the timeline (backward - past/forward - future). First I need to catch the event: but nothing I've found seems to work. Need browser support only for chrome/firefox (latest versions). These 2 won't listeners won't work: var paper = new Raphael('raphael-paper'); // ... paper.canvas.on('mousewheel', function(event) { console.log(event); }); // ... paper.canvas.addEventListener('mousewheel', function(event) { console.log(event); });

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  • Excanvas does not work in IE8 at all

    - by Matt Null
    I simply cannot get excanvas to work at all. I have tried everything I can think of. I am even uploading the examples that come with excanvas to my website and testing them and they do not even work. I don't know if it has something to do with my server or what, but I haven't seen a working excanvas image yet. for instance... I this example comes with the excanvas package and it does not work for me... does anyone know what this could possibly be? thanks http://www.javascriptkids.com/tools/excanvas/examples/example1.html

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  • How can I have a mouseover/in one off check?

    - by Denis Hoctor
    Hi all, How can I test if a mouse is within a given div? I know how to use events to do something when it occurs but is it possible to check it on pageload only? What I want to do is smething like: if(mouse is in specified div) { check = true; } else { check = false; } Thanks, Denis

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  • Iterate through all form fields within a specified DIV tag.

    - by user344255
    I need to be able to iterate through all the form fields within a specified DIV tag. Basically, any given DIV tag can have multiple form fields (which is easy enough to parse through), but it can also any number of tables or even additional DIV tags (adding additional levels of hierarchical layering). I've written a basic function that goes through each of the direct descendants of the parent node (in this case, the DIV tag) and it clears out its value. This part works fine. The problem is getting it to parse children when children (grandchildren) of their own. It winds up getting caught up in an infinite loop. In this case, I need be able to find all the form fields within DIV tag "panSomePanel", which will include some direct children (txtTextField1), but also some grandchildren who are within nested TABLE objects and/or nested DIV tags (radRadioButton, DESC_txtTextArea). Here is a sample DIV and its contents: <DIV id="panSomePanel"> <INPUT name="txtTextField1" type="text" id="txtTextField1" size="10"/><BR><BR> <TABLE id="tblRadioButtons" border="0"> <TR> <TD> <INPUT id="radRadioButton_0" type="radio" name="radRadioButton" value="1" /><LABEL for="radRadioButton_0">Value 1</LABEL> </TD> <TD> <INPUT id="radRadioButton_5" type="radio" name="radRadioButton" value="23" /><LABEL for="radRadioButton_5">Value 23</LABEL> </TD> </TR> <TR> <TD> <INPUT id="radRadioButton_1" type="radio" name="radRadioButton" value="2" /><LABEL for="radRadioButton_1">Value 2</LABEL> </TD> <TD> <INPUT id="radRadioButton_6" type="radio" name="radRadioButton" value="24" /><LABEL for="radRadioButton_6">Value 24</LABEL> </TD> </TR> <TR> <TD> <INPUT id="radRadioButton_2" type="radio" name="radRadioButton" value="3" /><LABEL for="radRadioButton_2">Value 3</LABEL> </TD> <TD> <INPUT id="radRadioButton_7" type="radio" name="radRadioButton" value="25" /><LABEL for="radRadioButton_7">Value 25</LABEL> </TD> </TR> <TR> <TD> <INPUT id="radRadioButton_3" type="radio" name="radRadioButton" value="21" /><LABEL for="radRadioButton_3">Value 21</LABEL> </TD> <TD> <INPUT id="radRadioButton_8" type="radio" name="radRadioButton" value="4" /><LABEL for="radRadioButton_8">Value 4</LABEL> </TD> </TR> <TR> <TD> <INPUT id="radRadioButton_4" type="radio" name="radRadioButton" value="22" /><LABEL for="radRadioButton_4">Value 22</LABEL> </TD> </TR> </TABLE> <DIV id="panAnotherPanel"><BR> <TABLE cellpadding="0" cellspacing="0" border="0" style="display:inline;vertical-align:top;"> <TR> <TD valign="top"> <TEXTAREA name="DESC:txtTextArea" rows="3" cols="48" id="DESC_txtTextArea"></TEXTAREA>&nbsp; </TD> <TD valign="top"><SPAN id="DESC_lblCharCount" style="font-size:8pt;"></SPAN> </TD> </TR> </TABLE> </DIV> </DIV> Here is the function I've written: function clearChildren(node) { var child; if (node.childNodes.length > 0) { child= node.firstChild; } while(child) { if (child.type == "text") { alert(child.id); child.value = ""; } else if (child.type == "checkbox") { child.checked = false; } else if (child.type == "radio") { alert(child.id); child.checked = false; } else if (child.type == "textarea") { child.innerText = ""; } //alert(child.childNodes.length); if (child.childNodes.length > 0) { var grandchild = child.firstChild; while (grandchild) { clearChildren(grandchild); } grandchild = grandchild.nextSibling; } child = child.nextSibling; } }

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  • try/catch: errors or exceptions?

    - by Josh
    OK. I may be splitting hairs here, but my code isn't consistent and I'd like to make it so. But before I do, I want to make sure I'm going the right way. In practice this doesn't matter, but this has been bothering me for a while so I figured I'd ask my peers... Every time I use a try... catch statement, in the catch block I always log a message to my internal console. However my log messages are not consistent. They either look like: catch(err) { DFTools.console.log("someMethod caught an error: ",err.message); ... or: catch(ex) { DFTools.console.log("someMethod caught an exception: ",ex.message); ... Obviously the code functions properly either way but it's starting to bother me that I sometimes refer to "errors" and sometimes to "exceptions". Like I said, maybe I'm splitting hairs but which is the proper terminology? "Exception", or "Error"?

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  • Not all parameters get sent in jquery ajax call

    - by rksprst
    I have a strange error where my jquery ajax request doesn't submit all the parameters. $.ajax({ url: "/ajax/doAssignTask", type: 'GET', contentType: "application/json", data: { "just_a_task": just_a_task, "fb_post_date": fb_post_date, "task_fb_postId": task_fb_postId, "sedia_task_guid": sedia_task_guid, "itemGuid": itemGuid, "itemType": itemType, "taskName": taskName, "assignedToUserGuid": assignedToUserGuid, "taskDescription": taskDescription }, success: function(data, status) { //success code }, error: function(xhr, desc, err) { //error code } }); But using firebug (and debugging) I can see that only these variables are posted: assignedToUserGuid itemGuid itemType just_a_task taskDescription taskName It's missing fb_post_date, task_fb_postId, and sedia_task_guid I have no idea what would cause it to post only some items and not others? Anyone know? Data is sent to asp.net controller that returns jsonresult (hence the contentType) Any help is appreciated. Thanks!

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  • How to get around the jslint error 'Don't make functions within a loop.'

    - by Ernelli
    I am working on making all of our JS code pass through jslint, sometimes with a lot of tweaking with the options to get legacy code pass for now on with the intention to fix it properly later. There is one thing that jslint complains about that I do not have a workround for. That is when using constructs like this, we get the error 'Don't make functions within a loop.' for (prop in newObject) { // Check if we're overwriting an existing function if (typeof newObject[prop] === "function" && typeof _super[prop] === "function" && fnTest.test(newObject[prop])) { prototype[prop] = (function (name, func) { return function () { var result, old_super; old_super = this._super; this._super = _super[name]; result = func.apply(this, arguments); this._super = old_super; return result; }; })(prop, newObject[prop]); } This loop is part of a JS implementation of classical inheritance where classes that extend existing classes retain the super property of the extended class when invoking a member of the extended class. Just to clarify, the implementation above is inspired by this blog post by John Resig. But we also have other instances of functions created within a loop. The only workaround so far is to exclude these JS files from jslint, but we would like to use jslint for code validation and syntax checking as part of our continuous integration and build workflow. Is there a better way to implement functionality like this or is there a way to tweak code like this through jslint?

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  • jquery validation of controls

    - by Vinodtiru
    Hi , I am looking at validation of some text boxes for somethings like required, minlength, max length, email etc... I am able to get examples that work fine on submit button on page. I want to do this validation on a button click which will only raise a ajax request and not submit of page. On internet all the sample is found was with submit button. Is there a easy way to change this code a little bit o make it work for non submit button click or any new jquery or java plugin to do the same. I am using the jquery.validation.js for now. This works with submit buttons. Any kind of help with suggestion or help is appreciated. Thanks in advance.

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  • Generate canonical / real URL based on base.href or location

    - by blueyed
    Is there a method/function to get the canonical / transformed URL, respecting any base.href setting of the page? I can get the base URL via (in jQuery) using $("base").attr("href") and I could use string methods to parse the URL meant to being made relative to this, but $("base").attr("href") has no host, path etc attributes (like window.location has) manually putting this together is rather tedious E.g., given a base.href of "http://example.com/foo/" and a relative URL "/bar.js", the result should be: "http://example.com/bar.js" If base.href is not present, the URL should be made relative to window.location. This should handle non-existing base.href (using location as base in this case). Is there a standard method available for this already? (I'm looking for this, since jQuery.getScript fails when using a relative URL like "/foo.js" and BASE tag is being used (FF3.6 makes an OPTIONS request, and nginx cannot handle this). When using the full URL (base.href.host + "/foo.js", it works).)

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  • Listing down stored records localStorage | Google Chrome Extensions

    - by Jamie
    How do I get to list down the stored records in the for loop? Basically I want it to list down the records like this: '<div id="record_' + number + '">' + localstorage value + '</div>' The number in the class should add 1 every record, e.g. 1, 2, 3, 4 every record it lists down, and so on. The localstorage value should show the localStorage[] but the problem is, the localStorage name has the same, e.g. (clicks on button) it will save the value of the URL into a localStorage I then open the application and shows the window.html inside there is list of stored records by using this: '<div id="record_' + number + '">' + localstorage value + '</div>' INCLUDING the record number to add per record 1, 2, 3, etc... like this: <div id="record_1">localstorage value</div> <div id="record_2">localstorage value</div> <div id="record_3">localstorage value</div> <div id="record_4">localstorage value</div> <div id="record_5">localstorage value</div> <div id="record_6">localstorage value</div> etc...

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  • How to close unclosed HTMl Tags?

    - by Starx
    Whenever we are fetching some user inputed content with some editing from the database or similar sources, we might retrieve the portion which only contains the opening tag but no closing. This can hamper the website's current layout. Is there a clientside or server way of fixing this?

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