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  • Nested WHILE loops not acting as expected - Javascript / Google Apps Script

    - by dthor
    I've got a function that isn't acting as intended. Before I continue, I'd like preface this with the fact that I normally program in Mathematica and have been tasked with porting over a Mathematica function (that I wrote) to JavaScript so that it can be used in a Google Docs spreadsheet. I have about 3 hours of JavaScript experience... The entire (small) project is calculating the Gross Die per Wafer, given a wafer and die size (among other inputs). The part that isn't working is where I check to see if any corner of the die is outside of the effective radius, Reff. The function takes a list of X and Y coordinates which, when combined, create the individual XY coord of the center of the die. That is then put into a separate function "maxDistance" that calculates the distance of each of the 4 corners and returns the max. This max value is checked against Reff. If the max is inside the radius, 1 is added to the die count. // Take a list of X and Y values and calculate the Gross Die per Wafer function CoordsToGDW(Reff,xSize,ySize,xCoords,yCoords) { // Initialize Variables var count = 0; // Nested loops create all the x,y coords of the die centers for (var i = 0; i < xCoords.length; i++) { for (var j = 0; j < yCoords.length, j++) { // Add 1 to the die count if the distance is within the effective radius if (maxDistance(xCoords[i],yCoords[j],xSize,ySize) <= Reff) {count = count + 1} } } return count; } Here are some examples of what I'm getting: xArray={-52.25, -42.75, -33.25, -23.75, -14.25, -4.75, 4.75, 14.25, 23.75, 33.25, 42.75, 52.25, 61.75} yArray={-52.5, -45.5, -38.5, -31.5, -24.5, -17.5, -10.5, -3.5, 3.5, 10.5, 17.5, 24.5, 31.5, 38.5, 45.5, 52.5, 59.5} CoordsToGDW(45,9.5,7.0,xArray,yArray) returns: 49 (should be 72) xArray={-36, -28, -20, -12, -4, 4, 12, 20, 28, 36, 44} yArray={-39, -33, -27, -21, -15, -9, -3, 3, 9, 15, 21, 27, 33, 39, 45} CoordsToGDW(32.5,8,6,xArray,yArray) returns: 39 (should be 48) I know that maxDistance() is returning the correct values. So, where's my simple mistake? Also, please forgive me writing some things in Mathematica notation... Edit #1: A little bit of formatting. Edit #2: Per showi, I've changed WHILE loops to FOR loops and replaced <= with <. Still not the right answer. It did clean things up a bit though... Edit #3: What I'm essentially trying to do is take [a,b] and [a,b,c] and return [[a,a],[a,b],[a,c],[b,a],[b,b],[b,c]]

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  • Javascript: Writing a firefox extension with sockets

    - by Johnny Grass
    I need to write a firefox extension that creates a server socket (I think that's what it's called) and returns the browser's current url when a client application (running on the same computer) sends it a request. The thing is that I have no Java/Javascript background at all and I'm pressed for time so I am trying to hack something together from code samples. So far I've been mildly successful. I've been working with code from this question which is used in the open source Firefox exension PolyChrome I have the following code: var reader = { onInputStreamReady : function(input) { var input_stream = Components.classes["@mozilla.org/scriptableinputstream;1"] .createInstance(Components.interfaces.nsIScriptableInputStream); input_stream.init(input); input_stream.available(); var request = ''; while (input_stream.available()) { request = request + input_stream.read(512); } var checkString = "foo" if (request.toString() == checkString.toString()) { output_console('URL: ' + content.location.href); } else output_console("nothing"); var thread_manager = Components.classes["@mozilla.org/thread-manager;1"].getService(); input.asyncWait(reader,0,0,thread_manager.mainThread); } } var listener = { onSocketAccepted: function(serverSocket, clientSocket) { output_console("Accepted connection on "+clientSocket.host+":"+clientSocket.port); input = clientSocket.openInputStream(0, 0, 0).QueryInterface(Components.interfaces.nsIAsyncInputStream); output = clientSocket.openOutputStream(Components.interfaces.nsITransport.OPEN_BLOCKING, 0, 0); var thread_manager = Components.classes["@mozilla.org/thread-manager;1"].getService(); input.asyncWait(reader,0,0,thread_manager.mainThread); } } var serverSocket = Components.classes["@mozilla.org/network/server-socket;1"]. createInstance(Components.interfaces.nsIServerSocket); serverSocket.init(9999, true, 5); output_console("Opened socket on " + serverSocket.port); serverSocket.asyncListen(listener); I have a few questions. So far I can telnet into localhost and get a response, but my string comparison in the reader seems to fail even if I enter "foo". I don't get why. What am I missing? The sample code I'm using opens up a console window and prints output when I telnet into localhost. Ideally I would like the output to be returned as a response when the client sends a request to the server socket with a passphrase. How do I go about doing that? Is doing this a good idea? Does it create security vulnerabilities on the computer? How can I block connections to the socket from other computers? What is a good place to read about javascript sockets? My google searches have been pretty fruitless but then maybe I'm not using the right keywords.

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  • Good JavaScript engine for animating via Sprite Sheets (not in canvas)

    - by N. Taylor Mullen
    I've looked around a bit for a great JavaScript Sprite Sheet animator lib/engine but couldn't find any good ones so I thought I'd ask around =). What I'm looking for in the engine is: Animate an image in a non-canvas setting (ex: div via css or img tags) Control frame rate/animation speed Flags to loop or to animate once etc. Are there any engines like this out there? If not I can always make my own but then again, I don't want to re-invent the wheel =].

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  • Read txt file using Javascript

    - by piemesons
    I am taking a text file from user and then posting that file back to the browser using ajax storing the content in db and then showing the content back to user page using Jquery post response. Now i want to something like this.. Read the text file from the user computer using javascript. Display the content and when he submits the page I will save the values.

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  • JavaScript (via Greasemonkey) failing to set "title" attributes on <a> tags

    - by rjray
    I have the following (fairly) simple JavaScript snippet that I have wired into Greasemonkey. It goes through a page, looks for <a> tags whose href points to tinyurl.com, and adds a "title" attribute that identifies the true destination of the link. Much of the important code comes from an older (unsupported) Greasemonkey script that quits working when the inner component that held the XPath implementation changed. My script: (function() { var providers = new Array(); providers['tinyurl.com'] = function(link, fragment) { // This is mostly taken from the (broken due to XPath component // issues) tinyurl_popup_preview script. link.title = "Loading..."; GM_xmlhttpRequest({ method: 'GET', url: 'http://preview.tinyurl.com/' + fragment, onload: function(res) { var re = res.responseText.match("<blockquote><b>(.+)</b></blockquote>"); if (re) { link.title = re[1].replace(/\<br \/\>/g, "").replace(/&amp;/g, "&"); } else { link.title = "Parsing failed..."; } }, onerror: function() { link.title = "Connection failed..."; } }); }; var uriPattern = /(tinyurl\.com)\/([a-zA-Z0-9]+)/; var aTags = document.getElementsByTagName("a"); for (i = 0; i < aTags.length; i++) { var data = aTags[i].href.match(uriPattern); if (data != null && data.length > 1 && data[2] != "preview") { var source = data[1]; var fragment = data[2]; var link = aTags[i]; aTags[i].addEventListener("mouseover", function() { if (link.title == "") { (providers[source])(link, fragment); } }, false); } } })(); (The reason the "providers" associative array is set up the way it is, is so that I can expand this to cover other URL-shortening services as well.) I have verified that all the various branches of code are being reached correctly, in cases where the link being examined does and does not match the pattern. What isn't happening, is any change to the "title" attribute of the anchor tags. I've watched this via Firebug, thrown alert() calls in left and right, and it just never changes. In a previous iteration all expressions of the form: link.title = "..."; had originally been: link.setAttribute("title", "..."); That didn't work, either. I'm no newbie to JavaScript OR Greasemonkey, but this one has me stumped!

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  • how to print entire HTML element in JavaScript?

    - by celicni
    I want to print the entire element including tag name, attribute name/value pairs and innerHTML. How can I do it in JavaScript (jQuery)? for example: var elArr = document.getElementsByTagName('link'); alert(elArr[0].printEntireElement()); //expected output might be <link href="/css/common.css" rel="stylesheet" type="text/css">` Note that for link element outerHTML is not defined!

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  • How to display an external content in my website using javascript

    - by Chris
    Hello! This is my first post! I have a question about javascript...here is my code: <html> <head> <title>Geolocation Demo</title> </head> <body> <h1>Geolocation Demo</h1> <p>Latitude: <span id="lat">0.00</span> Longitude: <span id="lon">0.00</span> City: <span id="city">Loading...</span></p> <p><a id="city_link" href="http://tinygeocoder.com/" target="_blank">View City</a></p> <p><a id="gmaps_link" href="http://maps.google.co.uk/" target="_blank">View on Google Maps</a></p> <script language="javascript"> // show the position on the page and make a google maps link function showPosition(position) { var lat = position.coords.latitude; var lon = position.coords.longitude; document.getElementById("lat").innerHTML = lat; document.getElementById("lon").innerHTML = lon; var gmaps_url = "http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=" + lat + "+" + lon; var city_url = "http://tinygeocoder.com/create-api.php?g=" + lat + "," + lon; document.getElementById("gmaps_link").href = gmaps_url; document.getElementById("city_link").href = city_url; } </script> </body> </html> As you can see, this script target my geolocation. Specifically, Lat and Lon are working perfectly. In addinition, i want to display and region info (like city). So, i found a website which i provide the coordinates and it returns me a region name. My question is if i can display the name of region without clicking the link "View city" but in the field "city"...is it possible to pass the webpage content (http://tinygeocoder.com/create-api.php?g=" + lat + "," + lon;) into my webpage? The content of this page is only the name as i said...no html tags! Thank you!

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  • Using Javascript to submit a form

    - by Webnet
    I'm using ExtJS on a registration page which should have no effect on this. <form name="registerform" id="registerform" method="POST" action="registerProcess.php"> I have that form and the javascript document.registerform.submit() will not submit the form.... any ideas?

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  • Validate HTML entities in JavaScript

    - by Eduard Luca
    I have a small JavaScript validation script that validates inputs based on Regex. I want to allow certain characters that are not exactly common (not sure if they're UTF8). For example I want to allow the following character ’, which looks like a single quote, but isn't. I got the HTML code for this which is &#8217;, but I'm not sure how to put this into the Regex. I've tried just inputting [&#8217]* but it doesn't validate.

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  • in javascript how to find element is array ?

    - by Anil Namde
    In javascript is there a good(i mean built in) way that i can find whether element if array of not ? one simple i can see is as follows but i don't like it if(ele.push){//its array it has push method} I mean i would like know if something like below exists function x(ele){ if(isArray(ele)){//dosomething} }

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  • Javascript code plagiarism checker

    - by Alex Ciminian
    I was wondering if there was any tool available that detects code plagiarism and works well with Javascript. I want to test assignment submissions for homework I'm going to hand out. The only tool that I know of that can do this is MOSS, but, from what I've heard, it's pretty poor for anything else than C. Unfortunately, I can't test it yet because I don't have submissions :).

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  • Javascript: 'this' changes when assigning a property?

    - by Pickels
    I know 'this' can be a problem when you don't understand Javascript well but this one got me a little puzzled. var ControlTypes = { TextBox: function () { console.log(this); this.Name = "TextBox"; console.log(this); } } ControlTypes.TextBox(); Firebug gives the following result: Object {} Object { Name="TextBox"} The first object is ControlTypes and the second one is Textbox. Could anybody explain the behavior behind this?

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  • Write an expression in javascript

    - by Hero
    hi everybody... I need a javascript code that split a string like below: Input string: "a=aa| b=b||b | c=cc" Output: a=>aa b=>b||b c=>cc I'd written different codes like: split(/ \ | /) or Split(/ \| (?! \ |) /) but didn't work. please help me... I really need it fast.

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