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  • How to detect textarea or input type="text" editing?

    - by kavoir.com
    I use this snippet to prevent the user from accidentally navigating away from the editing page: var warning = false; window.onbeforeunload = function() { if (warning) { return ''; } } Now I want to set the variable warning to be true if any of the textarea or input type="text" has been modified, I want to use the onkeyup event such as in: document.getElementById('textarea_id').onkeyup = function() { warning = true; } But it's not working. Don't quite want to use jQuery on this. Any insights?

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  • jQuery scroll fails for iframe (firefox)

    - by knappy
    I cannot get scroll to work, here is the complete stuff: http://zed.mit.edu/scroll2/buc.php I'm trying to refresh the page while maintaining the scroll position of the iframe inside. I'd like to have an alert when I actively scroll the iframe, these two both fail: $(top).frames['#iframe_bucinid'].scroll(function() .... $('#iframe_bucinid').scroll(function() ... The page's iframe is defined as: <iframe class="inframe" src="bucin.php" name="bucin" id="iframe_bucinid"> Notice that getting the scrollTop works with top.frames['bucin'].document.body.scrollTop

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  • question about python sched schedular.

    - by samy
    I have read about python sched (task schedular), it works like a cron. but I have a question : lets say if i schedule a function to ryn after every 2 hours and in the mean time my system gets shut down, then I again restart the system...did the schedular automatically starts and will run the function after 2 hours? or i have to start that again after shutting down the system? did sched work like a deamon?

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  • Replace Infinite loop in Flex

    - by H P
    Hello, I want to access a webservice:getMonitorData() , on creationcomplete and returns an array, in an infinite loop so that the getIndex0.text is updated each time. Flex is not able to handle an infinite loop and gives a timeout error 1502. If I run the for loop until i<2000 or so it works fine. How can replace the loop so that my webservice is accessed continiously and the result is shown in getIndex0.text. This is how my application looks like: <?xml version="1.0" encoding="utf-8"?> <s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" width="400" height="300" xmlns:plcservicebean="server.services.plcservicebean.*" creationComplete="clientMonitor1()"> <fx:Script> <![CDATA[ import mx.collections.ArrayCollection; import mx.controls.Alert; import mx.rpc.CallResponder; import mx.rpc.events.FaultEvent; import mx.rpc.events.ResultEvent; [Bindable] public var dbl0:Number; //-----------Infinite Loop, Works fine if condition = i<2000------------------------ public function clientMonitor1():void{ for(var i:int = 0; ; i++){ clientMonitor(); } } public function clientMonitor():void{ var callResp:CallResponder = new CallResponder(); callResp.addEventListener(ResultEvent.RESULT, monitorResult); callResp.addEventListener(FaultEvent.FAULT, monitorFault); callResp.token = plcServiceBean.getMonitorData(); } public function monitorResult(event:ResultEvent):void{ var arr:ArrayCollection = event.result as ArrayCollection; dbl0 = arr[0].value as Number; } protected function monitorFault(event:FaultEvent):void{ Alert.show(event.fault.faultString, "Error while monitoring Data "); } ]]> </fx:Script> <fx:Declarations> <plcservicebean:PlcServiceBean id = "plcServiceBean" showBusyCursor="true" fault="Alert.show(event.fault.faultString + '\n' + event.fault.faultDetail)" /> </fx:Declarations> <mx:Form x="52" y="97" label="Double"> <mx:FormItem label = "getMonitorValue"> <s:TextInput id = "getIndex0" text = "{dbl0}"/> </mx:FormItem> </mx:Form> </s:Group>

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  • Passing variables, creating instances, self, The mechanics and usage of classes: need explenation

    - by Baf
    I've been sitting over this the whole day and Im a little tired already so please excuse me being brief. Im new to python. I just rewrrote a working program, into a bunch of functions in a class and everzthings messed up. I dont know if its me but Im very surprised i couldn t find a beginners tutorial on how to handle classes on the web so I have a few questions. First of all, in the init section of the class i have declared a bunch of variables with self.variable=something. Is it correct that i should be able to access/modify these variables in every function of the class by using self.variable in that function? In other words by declaring self.variable i have made these variables, global variables in the scope of the class right? If not how do i handle self. ? Secondly how do i correctly pass arguments to the class? some example code would be cool. thirdly how do i call a function of the class outside of the class scope? some example code would be cool. fouthly how do I create an Instance of the class INITIALCLASS in another class OTHERCLASS, passing variables from OTHERCLASS to INITIALCLASS? some example code would be cool. I Want to call a function from OTHERCLASS with arguments from INITIALCLASS. What Ive done so far is. class OTHERCLASS(): def __init__(self,variable1,variable2,variable3): self.variable1=variable1 self.variable2=variable2 self.variable3=variable3 def someotherfunction(self): something=somecode(using self.variable3) self.variable2.append(something) print self.variable2 def somemorefunctions(self): self.variable2.append(variable1) class INITIALCLASS(): def __init__(self): self.variable1=value1 self.variable2=[] self.variable3='' self.DoIt=OTHERCLASS(variable1,variable2,variable3) def somefunction(self): variable3=Somecode #tried this self.DoIt.someotherfunctions() #and this DoIt.someotherfunctions() I clearly havent understood how to pass variables to classes or how to handle self, when to use it and when not, I probably also havent understood how to properly create an isntance of a class. In general i havent udnerstood the mechanics of classes So please help me and explain it to me like i have no Idea( which i dont it seems). Or point me to a thorough video, or readable tutorial. All i find on the web is super simple examples, that didnt help me much. Or just very short definitions of classes and class methods instances etc. I can send you my original code if you guys want, but its quite long. Thanks for the Help Much appreciated!

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  • Hook a javascript event to page load

    - by Jagd
    I have an aspx that has the following javascript function being ran during the onload event of the body. <body onload="startClock();"> However, I'm setting the aspx up to use a master page, so the body tag doesn't exist in the aspx anymore. How do I go about registering the startClock function to run when the page is hit and still have it use a masterpage?

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  • How do I change the curosr during a jQuery synchronous browser blocking POST?

    - by Tommy
    $.ajax({ url: "/cgi-bin/stats.exe", method: "post", async: false, data: { refresh: "a41" } }); Using ajax post synchronously - "async: false". While it blocks the browser during the active request, what is the most efficient way to change the cursor to the hourglass or display a wait .gif? Perhaps set the cursor as it enters this function then change it back in the success or complete function? Any advice is appreciated. Thank You.

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  • order array containing text and numbers

    - by ptrn
    I'm looking for the easiest way to sort an array that consists of numbers and text, and a combination of these. E.g. '123asd' '19asd' '12345asd' 'asd123' 'asd12' turns into '19asd' '123asd' '12345asd' 'asd12' 'asd123' This is going to be used in combination with the solution to another question I've asked here. The sorting function in itself works, what I need is a function that can say that that '19asd' is smaller than '123asd'. I'm writing this in JavaScript.

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  • Improved way to build nested array of unique values in javascript

    - by dualmon
    The setup: I have a nested html table structure that displays hierarchical data, and the individual rows can be hidden or shown by the user. Each row has a dom id that is comprised of the level number plus the primary key for the record type on that level. I have to have both, because each level is from a different database table, so the primary key alone is not unique in the dom. example: id="level-1-row-216" I am storing the levels and rows of the visible elements in a cookie, so that when the page reloads the same rows the user had open are can be shown automatically. I don't store the full map of dom ids, because I'm concerned about it getting too verbose, and I want to keep my cookie under 4Kb. So I convert the dom ids to a compact json object like this, with one property for each level, and a unique array of primary keys under each level: { 1:[231,432,7656], 2:[234,121], 3:[234,2], 4:[222,423], 5:[222] } With this structure stored in a cookie, I feed it to my show function and restore the user's previous disclosure state when the page loads. The area for improvement: I'm looking for better option for reducing my map of id selectors down to this compact format. Here is my function: function getVisibleIds(){ // example dom id: level-1-row-216-sub var ids = $("tr#[id^=level]:visible").map(function() { return this.id; }); var levels = {}; for(var i in ids ) { var id = ids[i]; if (typeof id == 'string'){ if (id.match(/^level/)){ // here we extract the number for level and row var level = id.replace(/.*(level-)(\d*)(.*)/, '$2'); var row = id.replace(/.*(row-)(\d*)(.*)/, '$2'); // *** Improvement here? *** // This works, but it seems klugy. In PHP it's one line (see below): if(levels.hasOwnProperty(level)){ if($.inArray(parseInt(row, 10) ,levels[level]) == -1){ levels[level].push(parseInt(row, 10)); } } else { levels[level] = [parseInt(row, 10)]; } } } } return levels; } If I were doing it in PHP, I'd build the compact array like this, but I can't figure it out in javascript: foreach($ids as $id) { if (/* the criteria */){ $level = /* extract it from $id */; $row = /* extract it from $id */; $levels[$level][$row]; } }

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  • How can I use the compile time constant __LINE__ in a string?

    - by John
    I can use __LINE__ as a method parameter just fine, but I would like an easy way to use it in a function that uses strings. For instance say I have this: 11 string myTest() 12 { 13 if(!testCondition) 14 return logError("testcondition failed"); 15 } And I want the result of the function to be: "myTest line 14: testcondition failed" How can I write logError? Does it have to be some monstrosity of a macro?

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  • Is there a more modern regexp handler for Open Object Rexx

    - by Brent.Longborough
    The regular expression class (rxregexp.dll) that comes with ooRexx (I'm on 4.0.0) is relatively low on function compared, say, with Python's re module (even at 2.5.2). It appears to have no assertions, no facilities for group extraction, or for substitution. Greedy or lazy matching is a global pattern option, rather than flagged by an additional "?". Basically, a pre-PCRE regular expression engine. Does anyone know if anything with more up-to-date function is available?

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  • Python PLY zero or more occurrences of a parsing item

    - by None
    I am using Python with PLY to parse LISP-like S-Expressions and when parsing a function call there can be zero or more arguments. How can I put this into the yacc code. This is my function so far: def p_EXPR(p): '''EXPR : NUMBER | STRING | LPAREN funcname [EXPR] RPAREN''' if len(p) == 2: p[0] = p[1] else: p[0] = ("Call", p[2], p[3:-1]) I need to replace "[EXPR]" with something that allows zero or more EXPR's. How can I do this?

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  • Quick question about jQuery selector content efficiency

    - by serg
    I am loading HTML page through ajax and then doing a bunch of searches using selectors: $.ajax({ ... dataType: "html", success: function(html) { $("#id1", html); $(".class", html); //... } } Should I extract $(html) into a variable and use it as a content, or it doesn't matter (from performance point)? success: function(html) { $html = $(html); $("#id1", $html); $(".class", $html); //... }

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  • How do I use jQuery for click event in iPhone web application

    - by Gazzer
    When I use jQuery for a simple click event it only works for links. Is there a way to make it work for spans etc: $("span.clicked").live("click", function(e){alert("span clicked!")}); $("a.clicked").live("click", function(e){alert("link clicked!")}); Example is here: http://ip1n.j-www.com/test/index2.html The SPAN works in Safari but not Mobile Safari (on iPhone or iPad) whereas the A tag works in both.

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  • Why doesn't my javascript work after AJAX filling the HTML?

    - by alex
    $.ajax({ method:"get", url:"/details/", data:"id="+id, beforeSend:function(){ }, success:function(html){ $("#holder").html(html); } }); After I fill a div with a HTML from an AJAX call, this is my javascript at the top of /details/ <script type="text/javascript"> alert('hi'); </script> MY DETAILS HTML CONTENT GOES HERE But it's not working

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  • Google map "zoomend" event issue

    - by ebae
    On my html page, I have a google map with a few markers. I want all the markers to be cleared once the zoom is changed on the map with the following code. GEvent.addListener(map, "zoomend", function() { map.clearOverlays(); } But what happens is actually the markers are removed by the "clearOverlays()" function, but then they appear again. Any idea why? Where is it going after the event is handled?

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  • applying apply() to deeply embeded list elements only

    - by romunov
    I would like to apply my function to only elements that are deeper in the list structure. For example, I would like to apply a certain function to list elements of second order only. Is this feasible with apply()? > str(l) List of 3 $ :List of 2 ..$ : num 5 ..$ : num 10 $ :List of 2 ..$ : num 15 ..$ : num 20 $ :List of 2 ..$ : num 25 ..$ : num 30

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  • How to pass non-fatal warnings from a library

    - by wRAR
    A library function parses a file and returns an object. If a parser encounters unknown data, missing values etc., it shouldn't throw an exception and stop parsing (because this is not fatal), but there should be a way to pass information about these things to a caller (so that warnings can be displayed in the UI, for example). How can these warning be returned? I'm thinking of passing a callback function/object into the library, are there any other possible solutions?

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