javascript

Java 6 ScriptEngine and JSON.parse problem

The Rhino release that is included in Java 6 ScriptEngine does not have a JSON parser. I've tried including crockfords JSON2.js in my script on the scriptengine.eval(). When I try to do the JSON.parse, it ends up giving me a script error that .replace is an unknown function. .replace is referenced several places in JSON2, and it works ...

Is there a sprintf equivalent in JavaScript?

It can be native or jquery. ...

Inline javascript performance.

I know it is better coding practice to avoid inline javascript like: <img id="the_image" onclick="do_this(true);return false;"/> I am thinking about switching this kind of stuff for bound jquery click events like: $("#the_image").bind("click",function(){ do_this(true); return false; }); Will I lose any performance if I bi...

Display the form again ?

Hi all, I want to ask about the form in javascript .. I want to do a game that the user enter the correct word, then alert message will apeared for correct word.. When the user do the first word correctly, the program will display another word (to be corrected) .. but the problem which i faced that i can't make the form display again t...

Manipulating pixels using only toDataURL

The problem I have is this: I need to be able to dynamically tint an image using Javascript, but I cannot access pixel data via the canvas. I can, however, store the dataURL (or any other text-based data format) and include that with the code, manipulate that data, and then create an image object using that dataURL. My question is, ho...

is there a way to add a variable/property to a DOM element (eg, an element returned by a jQuery selector)

Hi there, I am looking for an alternative to using an object/variable in global scope -- I would like to associate key/value pairs with specific DOM elements (eg, a DIV), so that I can use them as input for logic that processes other elements (eg, child elements of said DIV). I tried something naive like: $('[foo=bar]').key='value' , a...

How many javascript link I can have in Facebook?

Is there a limit of how many js file I can include () in facebook? I include 5 files. no problem.. the 6th one not loaded. Then I have to put the code in the 6th one into the 5th file. then works. so, is it 5 files in max? BY THE WAY, I'm developing the apps now, not in production. so it is not in the stage of compressing JS / minizin...

is right click an javascript event?

Is right click an javascript event? If so, how do I use it? ...

Starting Javascript

Hi guys, a couple of questions (never done javascript before). Below is part of the what happens on submit, what is something, the action, the php script its sent to? Also is there any software you guys reccomend for checking you're javascript, like the equivalent of an ide? im using notepad++. Is the rest the right sort of idea? I'm u...

How to simulate a fake MouseOver on a Flash applet in a webpage?

I listen to internet radio at http://player.play.it/player/player.htm and it works pretty well, except for one minor issue. The Flash applet that runs the radio player has a timer on it, where if you don't move the mouse over the player every once in a while, it decides you're idle and shuts off the stream, even if you're not actually i...

this === window in firebug

Hi guys, I wrote a simple webpage as follows: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"&gt; <html> <head> <meta http-equiv="Content-type" content="text/html; charset=utf-8" /> <title>pop</title> </head> <body> <script type="text/javascript" charset="utf-8"> document...

Javascript scope chain

Hi, I am trying to optimize my program. I think I understand the basics of closure. I am confused about the scope chain though. I know that in general you want a low scope (to access variables quickly). Say I have the following object: var my_object = (function(){ //private variables var a_private = 0; return{ //...

Resizing image to fit its container

#foo {width: 300px; height: 400px; overflow: hidden;} <div id="foo"></div> this.someimage = randomImageUrl; $("foo").innerHTML = "<img src='"+this.someimage+"' class='fooimage' />"; Now, the picture could be 200x200 or 1100x400 ... it's totally random. I can just stretch it (or reduce its size) by using: .fooimage {width: 300px; hei...

How to find whether a given path is absolute/relative and convert it to absolute for file manipulation?

I am writing a small windows script in javascript/jscript for finding a match for a regexp with a string that i got by manipulating a file. The file path can be provided relative or absolute. How to find whether a given path is absolute/relative and convert it to absolute for file manipulation? ...

How to hide check all, clear all checkbox

I am having check box in the column header. The function of this is to check or uncheck all the check boxes in that column.If the row check box is checked and say delete, that row can be deleted from the dataTable. If the row object is used in some other table as a foreign key i put '-' in that row instead of check box which indicates t...

how to include javascript into web app projet in visual studio?

Hi Anyone knows how to include javascript file as project's resource for aspx.cs files under different folders to use?thanks very much ...

OpenLayers: Get resolution of map in a given projection (4326)

I'm using OpenLayers to display OpenStreetMap maps. (Though, I'd assume this should be general enough to work for any map product...) I'm displaying some very sophisticated vector overlays, and the amount and resolution of the features I'm returning from the server via GeoJSON to overlay has proven too much for many computers. What I'd...

Is JSON array parsable? (Stream parser)

I have a YQL query that extracts data from a page and returns it to my script as JSON. The JSON is huge, and as such, here's my question: Is JSON array parsable? So that I can iterate over the entire JSON structure? ...

Hide Hashtags from the user's address bar

Does anyone know an easy way to hide hashtags in the user's address bar? I am using a image gallery plugin and the only way to control the start position is to use a hash tag. The problem is the hash tag gives away the relative path of the images folder and it looks bad. Without the hash tag it only loads thumbs and not start image so ...

Javascript equivalent of Python's iterkeys() dictionary method

In Python I can use the iterkeys() method to iterate over the keys of a dictionary. For example: mydict = {'a': [3,5,6,43,3,6,3,], 'b': [87,65,3,45,7,8], 'c': [34,57,8,9,9,2],} for k in mydict.iterkeys(): print k gives me: a c b How can I do something similar in Javascript? ...