Trying to create an object in Javascript (for Appcelerator/Titanium).The "object" is defined like this:
function server () {
this.cacheimages = 0;
this.login = "";
[code]....
In the same file, in another function when I run this line: var server = new server(); I get the error Result of expression 'server' is not a constructor.I have tried it with and without the "return" line, neither work.
I want input in format "A-xxxx-xxx". where 'x' is any alphanumeric character.
View 1 Replies View RelatedI created a new Javascript *class*
function TableData(headers, row)
{
this.headerArr = headers;
this.rowArr = row;
[Code].....
when I call it, though (printTable()) i get the error
Value undefined (result of expression parent.B.obj.printTable) is not object.
i dont rly understand javascript functions... but i think that should work? idk i call it on an onclick event
I get Result of expression 'document.ConverTable' [undefined] is not an object.with the code below, and would like some help finding out what the problem is.
...
<head>
<script type="text/javascript">
[code]....
I am getting a Safari only error: TypeError: Result of expression near '...}.bind(this))...' [undefined] is not a function.These are lines 88-92:
$(this.options.work).each(function(i, item) {
tmpItem = new GridItem(item);
tmpItem.getBody().appendTo($("#" + this.gridId));
[code]...
I created a new Javascript *class*
function TableData(headers, row)
{
this.headerArr = headers;
this.rowArr = row;
[code]....
when I call it,though (printTable())i get the error Value undefined(result of expression parent.B.obj.printTable) is not object. i dont rly understand javascript functions... but i think that should work? idk i call it on an onclick event
My webpage can work normally in IE but not in Safari(e.g. when I clicked on some buttons like 'Delete' button, the page opened in Safari stays the same while it should delete the object chosen).
When I tried debugging on Safari, after clicking the 'update' button, this message error appeared: "TypeError: Result of expression 'this.form.fireEvent' [undefined] is not a function".
I believe this code makes the incompatability between the 2 browser:
How should I amend the script for it to work on 2 browser concurrently?
jquery SVG plugin into my website(Keith Wood) but I can't seem to get any of the plots to be visible. The exact code that I have below; also I should note that I get the error "TypeError: Result of expression '('#svgplot').svg' [undefined] is not a function."
Eric
Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<title>jQuery SVG Basics</title>
[Code]..
is it possible to scroll / jump to say, 10px above a div? i tried adding padding, but it doesn't work.also, when I use <a href="#xxxx">, is it possible to prevent the browser from adding #xxxx to the url in the browser?
View 6 Replies View RelatedI am trying to figure out what the constructors for the Image object are.
I have figured out that in IE and Mozilla, the Image object, and the
HTMLImageElement are the same, from a property perspective at least, but
what is the constructor for the Image object?
I know that I can call the following constructors, but are there others?
Image()
Image(int x, int y)
I could not find any actual spec for this.
So our companies cms is quite javascript heavy. In an attempt to make it leaner I'm attempted to put all of our javascripts into as few files as possible, and compressed. For our form validation I've using the qforms library which consists of many files. Putting them into 1 file with all the other scripts and I receive the error "Field is not a constructor" Here's the piece of code creating the error.
Code: this[field] = new Field(o, field, this._name);
[Code]...
I would be getting this error?
Why this backward way is so often used for constructors:
myConstructor = function() { /*empty placeholder*/ }
// and then:
myConstructor.prototype.methodOne = function() {...}
myConstructor.prototype.methodTwo = function() {...}
instead of right away:
function myConstructor() {
this.methodOne = function() {...}
this.methodTwo = function() {...}
}
Is it just a tradition or is it a workaround of some problem I'm not
aware of?
what's the point of using x.constructor.prototype? (highlighted in red) why not directly use x.prototype. classname to check whether 'classname' property is in this class?
View 14 Replies View RelatedCan you pass an array reference to a constructor? I don't know if it's because the syntax is screwy or it's impossible, but the following doesn't work.
// row constructor with array called fields
function RowObject(fields)
{
this.fields=new Array();
this.fields=fields;
}
row=new RowObject(fields);
alert(row.fields[0])
I need to detect the "name" of the constructor of an object. For example, myArray.constructor === Array is true, but I want something where that === 'Array' is true. I've heard of Object.constructor.name, but it's not widely compatible. (preferably without involving regular expressions)?
View 4 Replies View RelatedI am trying to understand why I had an error, or why my solution worked. In my HTML I had:
<script language="JavaScript" type="text/javascript" src="Book.js"></script>
<script language="JavaScript" type="text/javascript" src="Book_TEST.js"></script>
Book.js said:
[Code]....
Now, the code worked fine in both script. (i.e., no more error.) So far as I can tell, the only differences between the first and next version of Book.js are the comments and the whitespace. Am I missing something? Can the comments or whitespace somehow effect the logic with which this code has been executing? If I get an error like this again, is there an easier/better way to fix it than to essentially retype the code?
How to extend the constructor for the date object of the javasccript so that whenever a call is made to the constructor, I want to perform a particular action? Basically how to define wrappers for default javascript methods or objects like Date() so that I can perform some action and then invoke the original method? So basically if I have something like var a = new Date(); I want it to (say) alert the value of the date everything Date() is called and then execute the default date constructor.
View 3 Replies View RelatedI have a class constructor, and after the constructor a prototype method associated with that class. I'm trying to call that method from within the class constructor, but it causes an error, indicating that the method is not a property of the class.Is it not possible to access prototype methods from within the constructor? If it IS possible, how do I do it?
View 8 Replies View RelatedI'm not sure why this: Code: console.log(instance2.getAnotherKey()()); returns Object { a = "a" } when I clearly reassigned the value of the a property. Reassigning the property caused change in this line:
Code:
ref.a = 'abc'; console.log(inst.getZ()); //Object {a="abc"} So why does it work when you call an instance method in the constructor (e.g. this.getZ()) but doesn't work when you call the instance method in prototype?
[Code]...
I'm looking for the constructor parameter list for DOM Objects. I was able to find a constructor for Option but none of the others.
Code:
myForm = new Form(params);
myForm.elements.push = new Select(params);
myForm.elements[0].options.push = new Option('Select this!','1');
This is a lot cleaner than
Code:
myForm = document.createElement('form');
myForm.setAttribute('name','theForm');
....
Where I can find a list of these constructor parameters?
I have a requirement to override the constructor of a javascript class. I have to execute the current constructor code and then call a javascript method. Basically, I need to execute a javascript method whenever an object of that particular class is created in addition to whatever is being done now. I do not want to copy and paste the current constructor code and override the initcomponent method. I am looking for an alternative for that.
View 5 Replies View RelatedI need to create a constructor for a computer object. This object must have three properties: speed, and mem_live mem_dead. Then I need to create a new object using this constructor and then have its properties displayed on the screen.Look at what I'm up to so far:
function Computer(speed, mem_live, mem_dead)
{
this.speed = speed;
[code]....
It always just shows : 4.0ghz, true, false
function show() {
var s = '' ;
for (var i = 0; i<arguments.length; s += '
'+arguments[i++]) ;
typeof(window) != 'undefined' ? window.alert(s) : WScript.Echo(s) ;
}
function f(){}
show('delete(f):',delete(f)) ; // false
g = function(){} ;
h = new g() ;
show('h:',h) ; // [object Object]
show('delete(g):',delete(g)) ; // true
show('h.constructor:',h.constructor) ; // function(){}
show('delete(h.constructor):',delete(h.constructor )) ; // true
show('h.constructor:',h.constructor) ; // function(){}
is there a delete for a object inside the constructor, while i init it?
i will try something like that:
var obj = function(a)
{
if (!a) delete this;
this.a = a;
}
Sorry, bad title. Anyway, is there a way to pass the arguments to an object
instantiated via a constructor using the arguments object and have it
expanded, so to speak, so that it doesn't appear as a single argument? I'm
sorry, this explanation is just atrocious, but I can't think of exactly how
to word it. Maybe an example...
Take for instance Function.apply. It takes 1-2 arguments, the first being
the object to use as the context, and the second being either an array or an
instance of the arguments object which are to be the arguments for the
function. I want to do something similar but I want to also basically use
the new operator so that I get back an object.
Here's a snippet of some of my code, maybe this will help:
I have an assignment where one piece of it needs to have the first name, last name, area code, and phone number when prompted by a function, once that info is had, it then needs to use the constructor function that is there to process the data and lastly use the data to output it with a show function. I have it to work with static information, but cant seem to figure what I am missing or how to make the prompt function information to feed to the constructor, I know when using the static variable it uses "new Function" but that seems to be my problem, I am stuck.
see the code below:
<!DOCTYPE html PUBLIC "-W3CDTD XHTML 1.0 TransitionalEN" "http:www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http:www.w3.org/1999/xhtml">
<head>
[Code]....