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  • Chrome Javascript

    - by Mike
    i have two spans on my page with class='hidden' and then some javascript to remove the class when a condition is met, its working fine in ie 9/10 and firefox but its not working in chrome when I run the function in the chrome JS console I get the message TypeError: Cannot read property 'attributes' of null Anybody know whats going on? <script type='text/javascript' > function showhidden() { var att =document.getElementById('hiddentextbox'); att.attributes[0].value=''; att =document.getElementById('hiddentextbox1'); att.attributes[0].value=''; }</script> Thanks

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  • Using JSON Data to Populate a Google Map with Database Objects

    - by MikeH
    I'm revising this question after reading the resources mentioned in the original answers and working through implementing it. I'm using the google maps api to integrate a map into my Rails site. I have a markets model with the following columns: ID, name, address, lat, lng. On my markets/index view, I want to populate a map with all the markets in my markets table. I'm trying to output @markets as json data, and that's where I'm running into problems. I have the basic map displaying, but right now it's just a blank map. I'm following the tutorials very closely, but I can't get the markers to generate dynamically from the json. Any help is much appreciated! Here's my setup: Markets Controller: def index @markets = Market.filter_city(params[:filter]) respond_to do |format| format.html # index.html.erb format.json { render :json => @market} format.xml { render :xml => @market } end end Markets/index view: <head> <script type="text/javascript" src="http://www.google.com/jsapi?key=GOOGLE KEY REDACTED, BUT IT'S THERE" > </script> <script type="text/javascript"> var markets = <%= @markets.to_json %>; </script> <script type="text/javascript" charset="utf-8"> google.load("maps", "2.x"); google.load("jquery", "1.3.2"); </script> </head> <body> <div id="map" style="width:400px; height:300px;"></div> </body> Public/javascripts/application.js: function initialize() { if (GBrowserIsCompatible() && typeof markets != 'undefined') { var map = new GMap2(document.getElementById("map")); map.setCenter(new GLatLng(40.7371, -73.9903), 13); map.addControl(new GLargeMapControl()); function createMarker(latlng, market) { var marker = new GMarker(latlng); var html="<strong>"+market.name+"</strong><br />"+market.address; GEvent.addListener(marker,"click", function() { map.openInfoWindowHtml(latlng, html); }); return marker; } var bounds = new GLatLngBounds; for (var i = 0; i < markets.length; i++) { var latlng=new GLatLng(markets[i].lat,markets[i].lng) bounds.extend(latlng); map.addOverlay(createMarker(latlng, markets[i])); } } } window.onload=initialize; window.onunload=GUnload;

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  • Pointer to local variable

    - by Radek Šimko
    May I have any acces to local variable in different function? If may, how? void replaceNumberAndPrint(int array[3]) { printf("%i\n", array[1]); printf("%i\n", array[1]); } int * getArray() { int myArray[3] = {4, 65, 23}; return myArray; } int main() { replaceNumberAndPrint(getArray()); } The output of the piece of code above: 65 4202656 What am i doing wrong? What the "4202656" means?? Do I have to copy the whole array in the replaceNumberAndPrint() function to be able to access to it more than first times?

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  • Network switches for LAN party

    - by guywhoneedsahand
    I am working on setting up the network for a small LAN party (less than 16 people). Most of them do not have wireless cards in their rigs, so I need to set up some way for everyone to a) play LAN games and b) access the internet. The LAN party will probably take place in my basement, where I have enough space. However, the basement is not wired up with the router which is actually on the floor above. I make a cantenna a while back that can boost the wireless performance of my computer significantly. How can I use this to provide internet and LAN to guests? My hope was that I could use a switch like this http://www.newegg.com/Product/Product.aspx?Item=N82E16833181166 for the LAN - but how can I give people access to the internet? Is there such thing as a network extender / 16-port switch? Obviously, the internet performance doesn't need to be super stellar, because the games will be using LAN - so I am looking to provide some usable internet for web browsing, and very high speed LAN for games. Thanks!

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  • Suggestion for R/LaTeX table creation package

    - by aL3xa
    I've been using xtable package for a long time, and looking forward to writting my first package in R... so I reckon that if I have some "cool" idea that's worth carying out, there's a great chance that somebody got there before me... =) I'm interested in functions/packages specialized for LaTeX table creation (through R, of course). I bumped on quantreg package which has latex.table function. Any suggestion for similar function(s)/package(s)? P.S. I'm thinking about building a webapp in which users can define their own presets/templates of tables, choose style, statistics, etc. It's an early thought, though... =)

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  • Change the colors of JvectorMap when there are 2 maps on the page

    - by Youssef
    i am using Jvectormap to place 2 maps on my page. the maps are placed normally and everything is fine. they are placed in 2 different divs: <div id="map1"> </div> <div id="map2"> </div> and the Jquery: $(function () { $('#map1').vectorMap({ color: '#aaaaaa', backgroundColor: '#ffffff', hoverOpacity: 1, hoverColor: true }); }); $(function () { $('#map2').vectorMap({ color: '#aaaaaa', backgroundColor: '#ffffff', hoverOpacity: 1, }); }); Now when I try to change the colors of map2 dynamically using: $("#map2").vectorMap("set", "colors", colorsDictionnary); The colors of the first one only is changed. and this happens only when changing colors. Always the first one have it's colors changed even if I am using $("#map2") How can change the colors of the map2 without touching map1? Thank you very much for any help, I really need it

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  • Configuring a html page from an original demo page

    - by Wold
    I forked into rainyday.js through github, an awesome javascript program made by maroslaw at this link: https://github.com/maroslaw/rainyday.js. Basically I tried taking his demo page and my own photo city.jpg and changed the applicable fields so that I could run it on my own site, but only the picture loads and the script itself doesn't start to run. I'm pretty new to html and javascript so I'm probably omitting something very simple, but here is the script for the demo code: <script src="rainyday.js"></script> <script> function getURLParameter(name) { return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search)||[,''])[1].replace(/\+/g, '%20'))||null; } function demo() { var image = document.getElementById('background'); image.onload = function () { var engine = null; var preset = getURLParameter('preset') || '1'; if (preset === '1') { engine = new RainyDay({ element: 'background', blur: 10, opacity: 1, fps: 30, speed: 30 }); engine.rain([ [1, 2, 8000] ]); engine.rain([ [3, 3, 0.88], [5, 5, 0.9], [6, 2, 1] ], 100); } else if (preset === '2') { engine = new RainyDay({ element: 'background', blur: 10, opacity: 1, fps: 30, speed: 30 }); engine.VARIABLE_GRAVITY_ANGLE = Math.PI / 8; engine.rain([ [0, 2, 0.5], [4, 4, 1] ], 50); } else if (preset === '3') { engine = new RainyDay({ element: 'background', blur: 10, opacity: 1, fps: 30, speed: 30 }); engine.trail = engine.TRAIL_SMUDGE; engine.rain([ [0, 2, 0.5], [4, 4, 1] ], 100); } }; image.crossOrigin = 'anonymous'; if (getURLParameter('imgur')) { image.src = 'http://i.imgur.com/' + getURLParameter('imgur') + '.jpg'; } else if (getURLParameter('img')) { image.src = getURLParameter('img') + '.jpg'; } var youtube = getURLParameter('youtube'); if (youtube) { var div = document.getElementById('sound'); var player = document.createElement('iframe'); player.frameborder = '0'; player.height = '1'; player.width = '1'; player.src = 'https://youtube.com/embed/' + youtube + '?autoplay=1&controls=0&showinfo=0&autohide=1&loop=1'; div.appendChild(player); } } </script> This is where I am naming my background and specifying the photo from within the directory. <body onload="demo();"> <div id="sound" style="z-index: -1;"></div> <div id="parent"> <img id='background' alt="background" src="city.jpg" /> </div> </body> The actual code for the whole entire rainyday.js script can be found here: https://github.com/maroslaw/rainyday.js/blob/master/rainyday.js Thanks in advance for any help and advice!

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  • Ajax doesn't work on remote server .

    - by Nuha
    Hello . when I Implemented chatting Function , I use Ajax to send messages between file to another . so , it is working well on local host . but , when I upload it in to remote server it doesn't work. can U tell me ,why ? is an Ajax need Special configuration ? Ajax code : function Ajax_Send(GP,URL,PARAMETERS,RESPONSEFUNCTION){? var xmlhttp? try{xmlhttp=new ActiveXObject("Msxml2.XMLHTTP")}? catch(e){? try{xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")}? catch(e){? try{xmlhttp=new XMLHttpRequest()}? catch(e){? alert("Your Browser Does Not Support AJAX")}}}? ? err=""? if (GP==undefined) err="GP "? if (URL==undefined) err +="URL "? if (PARAMETERS==undefined) err+="PARAMETERS"? if (err!=""){alert("Missing Identifier(s)\n\n"+err);return false;}? ? xmlhttp.onreadystatechange=function(){? if (xmlhttp.readyState == 4){? if (RESPONSEFUNCTION=="") return false;? eval(RESPONSEFUNCTION(xmlhttp.responseText))? }? }? ? if (GP=="GET"){? URL+="?"+PARAMETERS? xmlhttp.open("GET",URL,true)? xmlhttp.send(null)? }? ? if (GP="POST"){? PARAMETERS=encodeURI(PARAMETERS)? xmlhttp.open("POST",URL,true)? xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded")? xmlhttp.setRequestHeader("Content-length",PARAMETERS.length)? xmlhttp.setRequestHeader("Connection", "close")? xmlhttp.send(PARAMETERS)? }? }

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  • How should I port this Prototype to JQuery?

    - by blu
    There is currently this Prototype code that does a PUT: new Ajax.Request(someUrl, { method: 'put', parameters: { 'foo': bar }, onSuccess: function(response) { } .bind(this) }); I found this post but the solution uses an extra parameter supported by RoR, however I am targeting an ASP.NET backend. I searched a bit and found that not all browsers support PUT operations so apparently this could fail in certain browsers? This is already in prod, so a direct port would be fine for now I suppose. As an aside, what is the deal with the bind(this) in the onSuccess function?

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  • Avoid multiple autocomplete calls by wrapping it with SetTimeOut

    - by pixelboy
    Here's my issue : using an autocomplete jQuery plugin, I'd like to avoid multiple ajax requests when user strikes his keynoard by surrounding the $('#query1').autocomplete({ serviceUrl:'/actions/autocomplete?population=salon', minChars:3, maxHeight:300, width:200, clearCache:true, onSelect: function(suggestions,data){ $(".btn1").attr("href", "${pageContext.request.contextPath}/actions/espaceClients?participantId=" + data) } }); with something like var search = false; $('#query1, #query2, #query3').keyup(function(){ if (!search){ search = true; } if (search) { search = false; autocompleteThem(); } }); A you can see, above code is stupid, but it kinda shows what i'm trying to do. In simple words, if user dosen't type anything else in a certain period of time, then you can call autocomplete. I hope i'm being clear, as my brains are a mess...

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  • How to have type hinting in PHP that specifies variable scope inside of a template? (specifically PhpStorm)

    - by Lance Rushing
    I'm looking for a doc comment that would define the scope/context of the current php template. (similar to @var) Example View Class: <?php class ExampleView { protected $pageTitle; public function __construct($title) { $this->pageTitle = $title; } public function render() { require_once 'template.php'; } } -- <?php // template.php /** @var $this ExampleView */ echo $this->pageTitle; PHPStorm gives an inspection error because the access on $pageTitle is protected. Is there a hint to give scope? Something like: <?php // template.php /** @scope ExampleView */ // <---???? /** @var $this ExampleView */ echo $this->pageTitle;

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  • Add a loading graphic jquery

    - by sea_1987
    I am using the jquery ajax api so load in some content, the code looks like this, $.ajax({ type:"POST", url:"/search/location", data: getQuery, success:function(data){ //alert(getQuery); //console.log(data); $('body.secEmp').html(data); //overwrite current data setUpRegionCheckBoxes(); //fire function again to reload DOM } }); In my HTML i have <div id="loading">Loading Content</div> this is has a css style on it of display:none, while my ajax is bring in the content I want to show the div that is hidden, but I cant find a away too have tried attaching .ajaxStart on my loading div then doing show() but that did not work. Any advice?

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  • some confusions to singleton pattern in PHP

    - by SpawnCxy
    Hi all, In my team I've been told to write resource class like this style: class MemcacheService { private static $instance = null; private function __construct() { } public static function getInstance($fortest = false) { if (self::$instance == null) { self::$instance = new Memcached(); if ($fortest) { self::$instance->addServer(MEMTEST_HOST, MEMTEST_PORT); } else { self::$instance->addServer(MEM_HOST, MEM_PORT); } } return self::$instance; } } But I think in PHP resource handles will be released and initialized again every time after a request over. That means MemcacheService::getInstance() is totally equal new Memcached() which cannot be called singleton pattern at all. Please correct me if I'm wrong. Regards

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  • jQuery: form input values turns up undefined

    - by Seerumi
    Having problem with this bit of code qith jQuery. it should pick the values from current form and then submit them, but when I try to get them with jQuery they always turn up undefined. I know the SQL results are fine since they show correctly in HTML table, so it must be my inferior javascript skills. New with jQuery and I'm at loss :( PHP/HTML: echo "<table>\n" while ($row = odbc_fetch_array($query)) { echo "<form class='catForm'>\n"; echo "<input type=hidden class='catID' name='catID' value='".$row['running_id']."'/>\n"; echo "<tr>\n"; echo "<td>".$row['running_id']."</td>\n"; echo "<td>".$row['site_id']."</td>\n"; echo "<td>".$row['main_category']."</td>\n"; echo "<td>".$row['map_name']."</td>\n"; echo "<td><input type=textfield class='bCatID' value='".$row['mapping_id']."' size=6/></td>\n"; echo "<td><input type=submit class='saveCat' value='Save'/></td>\n"; echo "<td><input type=submit class='killCat' value='Delete' /></td>\n"; echo "</tr>\n"; echo "</form>\n"; } echo "</table>"; jQuery: $(".catForm").submit(function () { var id = $(this).find('.catID').val(); var bCatID = $(this).find('.bCatID').val(); var dataString = 'id='+id+'&bCatID='+bCatID; $.ajax({ type: "POST", url: 'adminUI/bin/updateSCategories.php', dataType : 'json', data: dataString, success: function(data) { if (data.error == true) $('.failure').html("Error, save failed.").show().fadeOut(2000); if (data.error == false) $('.success').html("Saved succesfully").show().fadeOut(2000); }, error: function(XMLHttpRequest, textStatus, errorThrown) { $('.failure').html("Error, save failed.").show().fadeOut(2000); } }); return false; }); RESULT: id: undefined bCatID: undefined

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  • prevent hover set by the CSS

    - by meo
    I try to prevent the Browser from using the :hover effect of the CSS. $("ul#mainFilter a").hover( function(o){ o.preventDefault(); ...do my stuff... }, function(o){ o.preventDefault(); ...do my stuff... }); I tired it with return false; to but it does not work. Does anyone know how to do this? due the answers i give you some more nfo: I have set the a and a:hover styles, in my CSS already. Now if JS is available on the clients machine, i want to overwrite the effect with a smoother one. (using jQuery color plugin) As mentioned by fudgey, a work around would be to set the style (using .css()) but i would have to overwrite every single effect specified in the CSS (see here: http://jsfiddle.net/raPeX/1/ ). I am looking for a generic solution.

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  • Validate zip and display error with onBlur event

    - by phil
    Check if zip is 5 digit number, if not then display 'zip is invalid'. I want to use onBlur event to trigger the display. But it's not working. <script> $(function(){ function valid_zip() { var pat=/^[0-9]{5}$/; if ( !pat.test( $('#zip').val() ) ) {$('#zip').after('<p>zip is invalid</p>');} } }) </script> zip (US only) <input type="text" name='zip' id='zip' maxlength="5" onBlur="valid_zip()">

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  • fb.init events when initialized

    - by oshafran
    Hi I have this code window.fbAsyncInit = function() { FB.init({ appId: 'balblablablbal', status: true, cookie: true, xfbml: false }); }; (function() { var e = document.createElement('script'); e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js'; e.async = true; document.getElementById('fb-root').appendChild(e); } ()); I would like to do something only after those JSs have been loaded (i.e. hook on FB.init event) How can I do that thanks

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  • BizTalk 2009 XSLT and Attribute Value Templates

    - by amok
    I'm trying to make use of attribute value type in a BizTalk XSL transformation to dynamically setting attribute or other element names. Read more here: http://www.w3.org/TR/xslt#dt-attribute-value-template The following code is an example of an XSL template to add an attribute optionally. <xsl:template name="AttributeOptional"> <xsl:param name="value"/> <xsl:param name="attr"/> <xsl:if test="$value != ''"> <xsl:attribute name="{$attr}"> <xsl:value-of select="$value"/> </xsl:attribute> </xsl:if> </xsl:template> Running this script in BizTalk results in "Exception from HRESULT: 0x80070002)" An alternative I was thinking of was to call a msxsl:script function to do the same but i cannot get a handle on the XSL output context from within the function. An ideas?

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  • jQuery get value from checked element with a given name

    - by Travis Leleu
    I've got an input like so: I'd like to use jQuery to grab that element, and add the function call foo() to the change event. Currently I can get it done, but there are two hacks involved. My (working) code: $(":input[name*=myfield]").change( function( $(":input[name*=myfield]") ) { foo(); }); )}; There are two hacks in there I'd like to eliminate. Keeping in mind that the input names are multidimensional arrays, how can I use the :input[name=somename], versus [name*=someone]? I'd imagine it's faster using an exact name rather than *=, but I can't get the escape sequence correct for the brackets on the multidimensional arrays. Can I chain the call together so that I don't have to select the element twice? Is the standard practice for that to select the HTML element into a var, then use that var? Or can I chain it together? Thanks for the help. Still working on getting my footing in JS/JQ.

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  • Why are functional languages considered a boon for multi threaded environments?

    - by Billy ONeal
    I hear a lot about functional languages, and how they scale well because there is no state around a function; and therefore that function can be massively parallelized. However, this makes little sense to me because almost all real-world practical programs need/have state to take care of. I also find it interesting that most major scaling libraries, i.e. MapReduce, are typically written in imperative languages like C or C++. I'd like to hear from the functional camp where this hype I'm hearing is coming from....

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  • XML pass values to timer, AS3

    - by VideoDnd
    My timer has three variables that I can trace to the output window, but don't know how to pass them to the timer. How to I pass the XML values to my timer? Purpose I want to test with an XML document, before I try connecting it to an XML socket. myXML <?xml version="1.0" encoding="utf-8"?> <SESSION> <TIMER TITLE="speed">100</TIMER> <COUNT TITLE="starting position">-77777</COUNT> <FCOUNT TITLE="ramp">1000</FCOUNT> </SESSION> myFlash //myTimer 'instance of mytext on stage' /* fields I want to change with XML */ //CHANGE TO 100 var timer:Timer = new Timer(10); //CHANGE TO -77777 var count:int = 0; //CHANGE TO 1000 var fcount:int = 0; timer.addEventListener(TimerEvent.TIMER, incrementCounter); timer.start(); function incrementCounter(event:TimerEvent) { count++; fcount=int(count*count/1000);//starts out slow... then speeds up mytext.text = formatCount(fcount); } function formatCount(i:int):String { var fraction:int = i % 100; var whole:int = i / 100; return ("0000000" + whole).substr(-7, 7) + "." + (fraction < 10 ? "0" + fraction : fraction); } //LOAD XML var myXML:XML; var myLoader:URLLoader = new URLLoader(); myLoader.load(new URLRequest("time.xml")); myLoader.addEventListener(Event.COMPLETE, processXML); //PARSE XML function processXML(e:Event):void { myXML = new XML(e.target.data); trace(myXML.ROGUE.*); trace(myXML); //TEXT var text:TextField = new TextField(); text.text = myXML.TIMER.*; text.textColor = 0xFF0000; addChild(text); } RESOURCES OReilly's ActionScript 3.0 Cookbook, Chapter 12 Strings, Chapter 20 XML

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  • Using new Image().src for click tracking

    - by razass
    I am attempting to figure out why this click tracker isn't working. The code was written by another developer so I am not entirely sure if this ever did work. function trackSponsor(o, p) { (new Image()).src = PATH_BASE + 'click/' + p + '/' + o + "?_cache=" + (+(new Date())); return false; } From what I can gather is that when this function is called it 'creates a new image' to fire a php script asynchronously. According to Firebug, the request is made however it is 'aborted' ~30ms in. The odd thing is that it will 'sometimes' work as in 1 in every 10+ regardless of the browser. I would much rather fix this so that it works instead of re-writing it as an ajax request. Any help is appreciated. Thanks in advance.

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  • python logparse search specific text

    - by krisdigitx
    hi, I am using this function in my code to return the strings i want from reading the log file, I want to grep the "exim" process and return the results, but running the code gives no error, but the output is limited to three lines, how can i just get the output only related to exim process.. #output: {'date': '13', 'process': 'syslogd', 'time': '06:27:33', 'month': 'May'} {'date': '13', 'process': 'exim[23168]:', 'time': '06:27:33', 'month': 'May'} {'May': ['syslogd']} #function: def generate_log_report(logfile): report_dict = {} for line in logfile: line_dict = dictify_logline(line) print line_dict try: month = line_dict['month'] date = line_dict['date'] time = line_dict['time'] #process = line_dict['process'] if "exim" in line_dict['process']: process = line_dict['process'] break else: process = line_dict['process'] except ValueError: continue report_dict.setdefault(month, []).append(process) return report_dict

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  • question about asynchronous http

    - by rantravee
    Hi , I just want to check if I understood well the way asynchronous Http request work on Android. Suppose I make such a request and set a ResponseHandler<String> responseHandler to handle the response. By doing this is it possible to have the UI thread blocked waiting for the response ? The implication being that the code in the function: public String handleResponse(HttpResponse response) is also executed on the UI thread or is there silently spawned a thread that waits for the response and calls the handleResponse(HttpResponse response) function when the response arrives ?

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