In PHP, there is a require_once() function which includes a file only
if it is not already included. Is there an equivalent function in
Javascript (one that checks if a .js file has been included)? If not a
straight-up function, is there some other way to check if a javascript
file has been included already?
I want to do some Win32 application automation from JavaScript. Is it possible? Failing that, is there a way to execute an application from JavaScript?
Does anyone know a way of passing parameters into a Javascript script 'from outside' via additions to the URL -- similar to (or even the same as!) the idea of CGI parameters?
I'm looking to return DATE ONLY for yesterday's date. No seconds, milliseconds. Formatted either yyyy/mm/dd or mm/dd/yyyy. VB does it so easily Date()-1 will return 03/27/2007 if today is 03/28/2007. Why so many hoops for javascript? Any ideas?
I am using a location in my javascript: '../../myfolder/myfile.asp'
I want to make the script reusable by pages in different folders. The 'myfolder' is in the root of my site. How can I target this from any other folder such as the vbscript server.mappath('myfolder/myfile.asp')?
What is the best way to get just the script name that is running without the path and parameter info? This would be the JavaScript equivalent to the PHP command:
Is there a way to achieve multithreading in JavaScript? I'm looking to fetch a page into a div while allowing the user to interact with another div. At some point the newly fetched page contents will be available to the div that the user is working in but I don't want to cause unnecessary blocking. I've thought of using frames (would prefer divs) plus timeouts and checking for when a load completes. Does anyone have an idea of how this could work?
A friend of mine has built as simple site for use on his company's intranet. It uses JavaScript to read comma-delimited information from a text file and displays it in tabular form.
When I looked at the source there is js like this:
function forwardClick() { if (sitelist.recordset.AbsolutePosition != sitelist.recordset.RecordCount) { sitelist.recordset.moveNext(); } else { alert("You are already at the last record in the database."); }}
wondering if there is a va_list equivalent in Javascript. Well, actually, I know that there is, but I don't know if its user... applicable. va_list in C/++ anyhow is a way of being able to pass in any number of arguments at the end of a function, I'll show an example:
So as you can see, the space is reserved at the end of the function declaration with the "..." syntax, and in the function body is expanded and processed. I could be way off here, but I think I'm on the right track.
I'm trying to find out if javascript has something akin to $$ in php.What I'm trying to do:
var costs = { cost1: 5, cost2: 10, cost3: 15 }
// Retrieve cost user has selected
alert(costs.selectedCost);
Its obviously a hyper-simplified example of what I'm trying to do, but the premise is the same. In PHP, I could use $$ to convert one variable into another, not sure if JS can do the same.
I have been trying to figure out how to access files on different servers through javascript, as i am converting an onsite myspace app to an iframe app, i need to get the contents of a file from the last.fm api and store it in a variable. Or maybe i could get it with php and store it in a javascript variable if that is possible,
Is there a javascript equivalent of PHP's nl2br() function? I have to send the value of a textarea to a new window that will display the text of what was in the box, which is why I need to somehow convert newlines to breaks.
I've been using display:none on the style property of some <option> elements in my forms, which works fine with Mozilla - as expected it removes the option from my dropdown (although it still exists in the code). Is there an equivalent in IE?
The reasoning behind this is that I want users to rank objects using a <select> for each place (see below), and to remove the choice of earlier objects from <select> drop-downs later in the list.
The purpose of this line is to get the "href" value of a link when clicked on inside a content-editable iframe.I have the function working perfectly in IE, but not having much luck with Mozilla browsers.
Give me a sample program for converting Ascii value into its equivalent value.for example get the input as 65(Ascii value of A) and display 'A' as output
Is it possible to get the contents of an iframe (I need a method that allows me to get the generated HTML code of an XML file that was transformed by an XSL file)?
Is there an equivalent in Konqueror's KJS engine to Gecko's __defineGetter__() and __defineSetter__() methods? Our web application uses a ton of Javascript, written based on Internet Explorer's object model as that's the primary platform that we're supporting. For Netscape support we uses __defineGetter__() and __defineSetter__() to emulate the many IE-only properties. I've tested our site using Safari, and to my surprise, it renders perfectly. Alas, it's completely non-functional. If it's somehow possible, I'd love to write a similar emulation library for KJS so that our non-Windows users would have an alternative to crummy Netscape/Mozilla.
but it doesn't work, because it's not passing the variables correctly I don't think. I don't know how to simulate a simple GET posting of a form.. the data line in this code is from another script which uses POST, but POST doesn't work for my purposes so I have to use GET.
<html><head> <script src="jquery.js"></script> <script type="text/javascript"> addIframe = function() { $('body').append('<iframe>'); } appendIframe = function() { $('iframe').contents().find('body').append('appended');} </script> </head><body> <button onClick="javascript:addIframe();">addIframe</button> <button onClick="javascript:appendIframe();">appendIframe</button> </body></html> Now this work perfectly fine with jQ 1.6.2, but does not work with 1.4.2 because 1.4.2 does not yet know .find(element).
Interesting question: Does a form SELECT have an equivalent to a form INPUT type="text" defaultValue?
For example: if an input field has a value of "Click Here" when a form first loads, and is set to become "" (blank) when focus is put on it, you can have JavaScript set the value to defaultValue ("Click Here") upon blur if nothing was typed.
Is there an equivalent for a SELECT option? If a different option is selected, can you compare that new option selectedIndex value to the original option selectedIndex value that was when the form first loads?
I am trying to convert this excel formula into a Javascript equivalent for a form I am doing in Acrobat Pro 9 and you guessed it. everything is done apart from this.