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  • How to check for undefined in javascript?

    - by chobo2
    Hi I want to make an if statement that if the value is not defined then let it go through. I tried if (something != "undefined") and if (something !== "undefined") However it seems to go into the if statement no matter what. If it is undefined it goes through. If it is defined it goes through. Am I doing something wrong?

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  • asp.net-mvc: javascript caching

    - by Omu
    I'm thinking whether it makes sense in order to increase the speed of the website to do some strategy of caching the js files that are being included ? one idea that I have is to do something like this: [OutputCache(Location = OutputCacheLocation.Any, Duration = 3600)] public JsController : Controller public ActionResult JQuery() { //I would have a ascx with the entire jquery script inside return View(); } and on the site.master: <%=Html.RenderAction("JQuery","JsController");

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  • Creating Javascript function called ReadName()

    - by user228390
    Hey guys, I want to create a form which has a text entry box where a user can enter their name and then I want a button as well. But what I want this button to have a function called ReadName() where what will happen is when the user clicks on the button it will come up with a message saying "Hello user name will appear here I have tried my self and but I don't think I am not getting what I want. Any help will be appreciated. <form> <label for="name">Name:/label> <input type="text" name="name" id="name"/> <input type="text" name="name" onfocus="ReadName()"/> </form>

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  • Sending mail using Javascript

    - by user146780
    Here's what I'm trying to do. I want to use Java Script to send an email. I have created a form with a subject text field, a message field, and a send button. I want for when the person clicks Send that it sends the email, but I want to avoid server side scripting. Thanks

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  • JavaScript OOP problem

    - by Danmark
    I create windows like this: var obj = document.createElement('div'); obj.className = 'window'; obj.style.width = 300 + 'px'; obj.style.height = 200 + 'px'; obj.style.left = 30 + 'px'; obj.style.top = 200 + 'px'; //and so on and what I need is to attach some data to each window. The data will be grabbed via Ajax and displayed in the windows. How should I do it so that each window hold its own unique data? I don't need to display the whole data every time and this data would need be organized before being displayed, so I can't just add it with innerHTML. I need a way to hold it somewhere else where I could easily get it and then display it with innerHTML.

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  • javascript htmlDivElement problem

    - by Fearghal
    Hi guys, I have a htmlDivElement (with no id) - and I'm trying to access and change the style of it.. Problem is everything I try returns 'Undefined' when i try to alert it Eg: alert (htmldivelementobject.className) I've also tried getAttribute but it returns the same thing... Where am I going wrong? F

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  • Javascript function not working with an array

    - by Ryan Harvie
    Hi, i have this function which loops through an array of check boxes checking if the boxes value is equal to something in a text box, i dont know whats wrong. function checkValue(contain) { var boxes = document.getElementsByTagName("input"); for (var i = 0; i < boxes.length; i++) { if (boxes[i].name == "vote[]") { if (boxes[i].value.indexOf(contain.value) != -1) { boxes[i].checked = true; } } } } and this is how i call it OnClick="uncheckAll(); checkValue(document.getElementsByName("countrylist"));" this code is in side a echo in php which is like this echo ' ';

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  • javascript timer fires up on the first key press

    - by pedrag
    I have a html page with a timer in it. I'm starting the timer with the keypress event, but i want it to execute only for the first key. I'm using a variable to catch the total keys in an other function which there were pressed and i have something like that: if(totaAttempts==1) start the timer, but with this solution the timer starts correctly, but is stomps when a key is pressed again. Any better ideas? Thanks in advance function setTime() { if (totalAttempts == 1) { ++totalSeconds; secondsLabel.innerHTML = pad(totalSeconds % 60); minutesLabel.innerHTML = pad(parseInt(totalSeconds / 60)); } } function pad(val) { var valString = val + ""; if (valString.length < 2) { return "0" + valString; } else { return valString; } }

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  • javascript - Google Chrome cluttering Array generated from .split()

    - by patrick
    Given the following string: var str = "one,two,three"; If I split the string on the commas, I normally get an array, as expected: var arr = str.split(/\s*,\s*/); Trouble is that in Google Chrome (for Mac), it appends extra properties to the array. Output from Chrome's debugger: arr: Array 0: one 1: two 2: three constructor: function Array() index: undefined input: undefined length: 3 So if I iterate over the array with a for/in loop, it iterates over the new properties. Specifically the input and index properties. Using hasOwnProperty doesn't seem to help. A fix would be to do a for loop based on the length of the Array. Still I'm wondering if anyone has insight into why Chrome behaves this way. Firefox and Safari don't have this issue.

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  • Javascript: Inherit method from base class and return the subclass's private variable

    - by marisbest2
    I have the following BaseClass defined: function BaseClass (arg1,arg2,arg3) { //constructor code here then - var privateVar = 7500; this.getPrivateVar = function() { return privateVar; }; } I want to have the following subclass which allows changing privateVar like so: function SubClass (arg1,arg2,arg3,privateVar) { //constructor code here then - var privateVar = privateVar; } SubClass.prototype = new BaseClass(); Now I want SubClass to inherit the getPrivateVar method. However, when I try this, it always returns 7500 which is the value in the BaseClass and not the value of privateVar. In other words, is it possible to inherit a BaseClass's public methods but have any references in them refer to the SubClass's properties? And how would I do that?

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  • Ajax create div dynamically+javascript

    - by niao
    Greetings, The question relates to ASP.NET MVC I am creating some divs dynamically using AJAX (some views render dynamically). Inside these views a have some JS code. When user click on link i would like to open dialog box with google map. However, because these views are rendered dynamically it does not work because js code is not injected (what can be seen in page source). How can I resolve this problem?

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  • JavaScript: document properties

    - by deb
    Hi, is there a "document" property named ssh? It's a simple question. I've seen this in some code at work, but no one in the office wrote the code, so I'm stucked. The line was document.ssh.firstPing(...) firstPing was a method in the code, that is writen in js+php. But I've searched with eclipse throughout all the code and there is no ssh anywhere.

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  • javascript regular expressions

    - by Zhasulan Berdybekov
    Help me with regular expressions. I need to check the text on the hour and minute. That is the first case, the text can be from 0 to 12. In the second case, the text can be from 1 to 60. this is my code: var hourRegEx = /^([0-9]{2})$/; //You can fix this line of code? $(document).ready( function(){ $('form.form').submit(function(){ if( $('input.hour').val().match(hourRegEx) ){ return true; } return false; }); }); In my case, the code says that, for example 52, too, the correct answer

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  • Javascript Getting specific element (of parent) by name

    - by Fluidbyte
    I'm using custom tags to define sections in an application, so I have something like this: <mysection> <form> <input name="myfield"> </form> </mysection> I'm using the following and able to get the tag (printed to console, everything is groovy) var parent = document.getElementsByTagName('mysection'); The issue I'm having is finding the child field by name: var myfield = parent.getElementsByName("myfield"); ...as I don't want to pick up on any other 'sections' that might have an input with the name 'myfield'. EDIT: var parent = document.getElementsByTagName('mysection')[0]; was suggested and returns to console the section contents, however, getElementsByName throws an error: Uncaught TypeError: Object #<NodeList> has no method 'getElementsByName'

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  • Javascript for removing menu and scroll bars

    - by nWight
    Hi - I have this script on my html page: parent.resizeTo(550,510); I'd like to add to it so it positions the window in the middle of the screen. Also, I want to remove the address and tool bars (I've managed to hide the scrollbars by using body{overflow:hidden;}). I know how to do this using JS upon opening a new window from the browser but this needs to work from clicking a link on a PDF. Does anyone have any suggestions? Thank you!

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  • Insert multiple attributes into html tag using JavaScript and not between tags

    - by WilliamK
    From a previous quest we asked about inserting a new attribute into a html tag and the code below does the job nicely, but how should it be coded to add multiple attributes, for example changing.. <body bgcolor="#DDDDDD"> to... <body bgcolor="#DDDDDD" topmargin="0" leftmargin="0"> The code that works for a single attribute is... document.getElementsByTagName("body")[0].setAttribute("id", "something"); How to modify this for inserting multiple attributes?

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  • Text + randomchar dosn't work [JavaScript]

    - by user558773
    <script> function makeid() { var text = "var text = document.write(lastNumber);"; var possible = "*+-/"; for( var i=0; i < 1; i++ ) document.write(lastNumber + possible.charAt(Math.floor(Math.random() * possible.length)); return text; } document.write(makeid(1))</script> How do i make this to type for ex: 23* 45- 13/ and so on. What is wrong? It just show me 2 numbers and no char after.

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