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  • JavaScript - question regarding data structure

    - by orokusaki
    I'm trying to calculate somebody's bowel health based on a points system. I can edit the data structure, or logic in any way. I'm just trying to write a function and data structure to handle this ability. Pseudo calculator function: // Bowel health calculator var points = 0; If age is from 30 and 34: points += 1 If age is from 35 and 40: points += 2 If daily BMs is from 1 and 3: points -= 1 If daily BMs is from 4 and 6: points -= 2 return points; Pseudo data structure: var points_map = { age: { '30-34': 1, '35-40': 2 }, dbm: { '1-3': -1, '4-6': -2 } }; I have a full spreadsheet of data like this, and I am trying to write a DRY version of code and a DRY version of this data (ie, probably not a string for the '30-34', etc) in order to handle this sort of thing without a humongous number of switch statements.

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  • Can't set element ID in JavaScript, it's always undefined

    - by Dylaan Alith
    Hi, I want to have a function that generates ID's on the fly for a given jquery object, if it doesn't have one already. These ID's should then be used in future requests. I came up with the code below, but it doesn't work. The ID's are never set. The commented out alert statement below always return undefined. I always pass code like $(this) or $(options.el) as a parameter to substitute 'el'. Initially, the elements do not have explicitly ID set in HTML. Any help would be appreciated, here's the code: getElementId: function(el) { if(undefined == el.attr('id')) { el.attr('id',"anim-"+Math.random().toString().substr(2)); } // alert(el.attr('id')); return el.attr('id'); },

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  • Javascript Submit

    - by Mick
    Hi I have the following script in my form function pdf() { var frm = document.getElementById("form1"); frm.action = "http://www.abbysoft.co.uk/index.php"; frm.target="_blank" frm.submit() } this is called from the following in my form <input class="buttn" type="button" value="Test" onclick="pdf()" The code work up to the frm.submit() but it will not submit Can anyone offer any advice please ?

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  • Convert ISO/Windows charsets to UTF-8 in Javascript

    - by Amir
    I'm developing a firefox plugin and i fetch web pages to do some analysis for the user. The problem is when i try to get (XMLHttpRequest) pages that are not utf-8 encoded the string i see is messed up. For example hebrew pages with windows-1125 or Chinese pages with gb2312. I already tried the following: var uDecoder=Components.classes["@mozilla.org/intl/scriptableunicodeconverter"].getService(Components.interfaces.nsIScriptableUnicodeConverter); uDecoder.charset="windows-1255"; alert( xhr.responseText ); var decoder=Components.classes["@mozilla.org/intl/utf8converterservice;1"].getService(Components.interfaces.nsIUTF8ConverterService); alert(decoder.convertStringToUTF8(xhr.responseText,"WINDOWS-1255",true)); I also tried escape/unescape/encodeURIComponent any ideas???

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  • HTML javascript form submitted when image input button

    - by DreamU
    I have a form that contains this single input field, which is nothing more than a button to Print the current web page: <div align="center"> <input type="image" src="../Images/print.jpg" value="Print" onclick="printpage();" /></div> </div> After the printing, the page re-submits itself (to itself). Why does it do this and can I stop it? If I just change the type to "input", this code does not re-submit itself after printing: <div align="center"> <input type="input" src="../Images/print.jpg" value="Print" onclick="printpage();" /></div> </div> Unfortunately, our style conventions require me to use that button image rather than the standard input button.

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  • Javascript private member on prototype...

    - by Wilq32
    Well I tried to figure out is this possible in any way. Here is code: a=function(text) { var b=text; if (!arguments.callee.prototype.get) arguments.callee.prototype.get=function() { return b; } else alert('already created!'); } var c=new a("test"); // creates prototype instance of getter var d=new a("ojoj"); // alerts already created alert(c.get()) // alerts test alert(d.get()) // alerts test from context of creating prototype function :( As you see I tried to create prototype getter. For what? Well if you write something like this: a=function(text) { var b=text; this.getText=function(){ return b} } ... everything should be fine.. but in fact every time I create object - i create getText function that uses memory. I would like to have one prototypical function lying in memory that would do the same... Any ideas? EDIT: I tried solution given by Christoph, and it seems that its only known solution for now. It need to remember id information to retrieve value from context, but whole idea is nice for me :) Id is only one thing to remember, everything else can be stored once in memory. In fact you could store a lot of private members this way, and use anytime only one id. Actually this is satisfying me :) (unless someone got better idea). someFunc = function() { var store = new Array(); var guid=0; var someFunc = function(text) { this.__guid=guid; store[guid++]=text; } someFunc.prototype.getValue=function() { return store[this.__guid]; } return someFunc; }() a=new someFunc("test"); b=new someFunc("test2"); alert(a.getValue()); alert(b.getValue());

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  • JavaScript: List global variables in IE

    - by Quandary
    I'm trying to get the instance name of my class. The way I do this is I loop through all global objects and compare it with the this pointer. It works in Chrome and FF, but in IE, it doesn't. The problem seems to be the global variables don't seem to be in window. How can I loop through the global variables in IE ? PS: I know it only works as long as there is only one instance, and I don't want to pass the instance's name as a parameter. function myClass() { this.myName = function () { // search through the global object for a name that resolves to this object for (var name in this.global) { if (this.global[name] == this) return name } } } function myClass_chrome() { this.myName = function () { // search through the global object for a name that resolves to this object for (var name in window) { if (window[name] == this) return name ; } } ; } // store the global object, which can be referred to as this at the top level, in a // property on our prototype, so we can refer to it in our object's methods myClass.prototype.global = this //myClass_IE.prototype.global = this // create a global variable referring to an object // var myVar = new myClass() var myVar = new myClass_chrome() //var myVar = new myClass_IE() alert(myVar.myName() );// returns "myVar"

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  • Javascript nested functions not returning

    - by Achintha Samindika
    I'm building a phonehap application. I'm using an web sql and everything works fine till data retival. function getItemGroups(){ var items_groups = new Array(); var db = window.openDatabase("merbokDB", "1.0", "MerbokDB", 5232394); db.transaction( function(tx){ tx.executeSql('SELECT * FROM item_groups',[], function(tx,result){ if(result.rows.length > 0){ var len = result.rows.length; for (var i=0; i<len; i++){ items_groups.push(result.rows.item(i).item_group); } console.log(items_groups.join()); } } ,errorCB); }, errorCB); return items_groups; } var myproducts = getItemGroups(); My problem was when I run the code "myproducts" variable is blank. but the I can see console.log(items_groups.join()); following line printing the values in console. Is I'm wrong in the way I returning?

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  • ERB doesnt get executed in javascript scripts

    - by Stefano
    Hi guys I have a select input on my page. this select input displays/hides fields in the form. This all works fine. But the problem is that if i submit the form and lack some necessary fields, it doesnt set the select to the right value afterwards. I just cant get the embedded ruby to work! it keeps escaping the whole thing... here my code: $(document).ready(function() { $("#profile_sex").val('<%= @profile.sex %>') $("#profile_sex").change(function(){ ($(this).val() == "Frau") ? $('#form-female').show() : $('#form-female').hide(); ($(this).val() == "Mann") ? $('#form-male').show() : $('#form-male').hide(); if ($(this).val() == "Paar") { $('#form-female').show(); $('#form-male').show(); } }); }); why doesnt this work??? I dont get any error or anything it just sets the value to "<%= @profile.sex =" I was googling and searching about on stack overflow and railscasts, the rails API, everything. Im seriously confused... thanks for your help.

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  • Form submit in javascript

    - by zac
    Hi been wrestling this form and the last step (actually submitting) has me scratching my head. What I have so far is the form: <form id="theForm" method='post' name="emailForm"> <table border="0" cellspacing="2"> <td>Email <span class="red">*</span></td><td><input type='text'class="validate[required,custom[email]]" size="30"></td></tr> <td>First Name:</td><td><input type='text' name='email[first]' id='first_name' size=30></td></tr> <tr height="30"> <td cellpadding="4">Last Name:</td><td><input type='text' name='email[last]' id='e_last_name' size=30> <td>Birthday</td> <td><select name='month' style='width:70px; margin-right: 10px'> <option value=''>Month</option> <option value="1">Jan</option> <option value="2">Feb</option> .... </select><select name='day' style='width:55px; margin-right: 10px'> <option value=''>Day</option> <option value="1">1</option> <option value="2">2</option> ... <option value="31">31</option> </select><select name='year' style='width:60px;' > <option value=''>Year</option> <option value="2007">2007</option> <option value="2006">2006</option> <option value="2005">2005</option> ... </select> <input type='image' src='{{skin url=""}}images/email/signUpButt.gif' value='Submit' onClick="return checkAge()" /> <input type="hidden" id= "under13" name="under13" value="No"> and a script that checks the age and sets a cookie/changes display function checkAge() { var min_age = 13; var year = parseInt(document.forms["emailForm"]["year"].value); var month = parseInt(document.forms["emailForm"]["month"].value) - 1; var day = parseInt(document.forms["emailForm"]["day"].value); var theirDate = new Date((year + min_age), month, day); var today = new Date; if ( (today.getTime() - theirDate.getTime()) < 0) { var el = document.getElementById('emailBox'); if(el){ el.className += el.className ? ' youngOne' : 'youngOne'; } document.getElementById('emailBox').innerHTML = "<style type=\"text/css\">.formError {display:none}</style><p>Good Bye</p><p>You must be 13 years of age to sign up.</p>"; createCookie('age','not13',0) return false; } else { createCookie('age','over13',0) return true; }} that all seems to be working well.. just missing kind of a crucial step of actually submitting the form if it validates (if they pass the age question). So I am thinking that this will be wrapped in that script.. something in here : else { createCookie('age','over13',0) return true; } Can someone please help me figure out how I could handle this submit?

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  • Javascript/jQuery: remove shape/path from canvas

    - by bobsoap
    I can't seem to find the function to remove a shape or path from the canvas after it has been created. So I'm creating a bezier curve between 2 points with beginPath(); bezierCurveTo(); stroke(); closePath(); . How can I remove this from the canvas once it's been created? I need to be able to call the remove function via toggle() and blur(). I'm sure something exists for this... Thanks in advance for any help!

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  • Javascript focus and select not working in FF

    - by Metropolis
    Hey guys, Using jQuery, the following is not working in FF, but it is in IE $(this).focus().select(); I looked around for this and found that you could use a timeout to get around this, but that is not something I want to do if I can avoid it. Does anyone know another way to do this and have it work in FF? Metropolis

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  • Substring text with html tags in javascript

    - by honzahommer
    Do you have solution to substring text with html tags in Javascipt? For example: var str = 'Lorem ipsum <a href="#">dolor <strong>sit</strong> amet</a>, consectetur adipiscing elit.' html_substr(str, 20) // return Lorem ipsum <a href="#">dolor <strong>si</strong></a> html_substr(str, 30) // return Lorem ipsum <a href="#">dolor <strong>sit</strong> amet</a>, co

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  • HTML+CSS+Javascript: hi, I'm getting crazy with this

    - by Patrick
    hi, I'm getting crazy with some browsers fixes to do everytime I'm doing a new website. For example, lately I've built my own Flash Video Player and I lost hours to fix some problems such as aligning it in IE and Firefox and Safari. Would be so cool to have a intermediary layer, I could use to design my website, without taking care of all browsers fixes... I guess I'm a dreamer

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  • Programmatically triggering events in Javascript for IE using jQuery

    - by Dan Herbert
    When an Event is triggered by a user in IE, it is set to the window.event object. The only way to see what triggered the event is by accessing the window.event object (as far as I know) This causes a problem in ASP.NET validators if an event is triggered programmatically, like when triggering an event through jQuery. In this case, the window.event object stores the last user-triggered event. When the onchange event is fired programmatically for a text box that has an ASP.NET validator attached to it, the validation breaks because it is looking at the element that fired last event, which is not the element the validator is for. Does anyone know a way around this? It seems like a problem that is solvable, but from looking online, most people just find ways to ignore the problem instead of solving it. To explain what I'm doing specifically: I'm using a jQuery time picker plugin on a text box that also has 2 ASP.NET validators associated with it. When the time is changed, I'm using an update panel to post back to the server to do some things dynamically, so I need the onchange event to fire in order to trigger the postback for that text box. The jQuery time picker operates by creating a hidden unordered list that is made visible when the text box is clicked. When one of the list items is clicked, the "change" event is fired programmatically for the text box through jQuery's change() method. Because the trigger for the event was a list item, IE sees the list item as the source of the event, not the text box, like it should. I'm not too concerned with this ASP.NET validator working as soon as the text box is changed, I just need the "change" event to be processed so my postback event is called for the text box. The problem is that the validator throws an exception in IE which stops any event from being triggered. Firefox (and I assume other browsers) don't have this issue. Only IE due to the different event model. Has anyone encountered this and seen how to fix it? I've found this problem reported several other places, but they offer no solutions: jQuery's forum, with the jQuery UI Datepicker and an ASP.NET Validator ASP.NET forums, bug with ValidatorOnChange() function

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  • window.location alternatives in JavaScript

    - by MartyIX
    What is a standardized alternative to window.location.href function? I was checking on w3schools.com that it is implemented in all major browsers so there's no problem but I'm rather curious how to do that properly. From here is the statement that the function is not standardized: https://developer.mozilla.org/en/DOM/window.location Thanks!

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  • How do I return a variable in javascript?

    - by bmckim
    I am working with the google maps API and whenever I return the variable to the initialize function from the codeLatLng function it claims undefined. If I print the variable from the codeLatLng it shows up fine. var geocoder; function initialize() { geocoder = new google.maps.Geocoder(); var latlng = new google.maps.LatLng(40.730885,-73.997383); var addr = codeLatLng(); document.write(addr); } function codeLatLng() { var latlng = new google.maps.LatLng(40.730885,-73.997383); if (geocoder) { geocoder.geocode({'latLng': latlng}, function(results, status) { if (status == google.maps.GeocoderStatus.OK) { if (results[1]) { return results[1].formatted_address; } else { alert("No results found"); } } else { alert("Geocoder failed due to: " + status); } }); } } prints out undefined If I do: var geocoder; function initialize() { geocoder = new google.maps.Geocoder(); var latlng = new google.maps.LatLng(40.730885,-73.997383); codeLatLng(); } function codeLatLng() { var latlng = new google.maps.LatLng(40.730885,-73.997383); if (geocoder) { geocoder.geocode({'latLng': latlng}, function(results, status) { if (status == google.maps.GeocoderStatus.OK) { if (results[1]) { document.write(results[1].formatted_address); } else { alert("No results found"); } } else { alert("Geocoder failed due to: " + status); } }); } } prints out New York, NY 10012, USA

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  • I would like some help with an autoroller im coding in javascript

    - by Ian
    I have a game that requires you to click on an object to collect prizes, but instead of giving my user carpel tunnel I want to create an autoroller. I have some code done already but I cant get it to work. If there is anyone out there that would be able to help me get this code working, it would be greatly appreciated. Thanks

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  • How to parse HTML from JavaScript in Firefox?

    - by hmp
    What is the best way to parse (get a DOM tree of) a HTML result of XmlHttpRequest in Firefox? EDIT: I do not have the DOM tree, I want to acquire it. XmlHttpRequest's "responseXML" works only when the result is actual XML, so I have only responseText to work with. The innerHTML hack doesn't seem to work with a complete HTML document (in <html</html). - turns out it works fine.

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  • Regular expression test can't decide between true and false (JavaScript)

    - by nw
    I get this behavior in both Chrome (Developer Tools) and Firefox (Firebug). Note the regex test returns alternating true/false values: > var re = /.*?\bbl.*\bgr.*/gi; undefined > re /.*?\\bbl.*\\bgr.*/gi > re.test("Blue-Green"); true > re.test("Blue-Green"); false > re.test("Blue-Green"); true > re.test("Blue-Green"); false However, testing the same regex as a literal: > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true I can't explain this and it's making debugging very difficult. Can anyone explain this behavior?

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