javascript

If I want to learn javascript by small project, what should I do?

Hey, guys! I found javascript is not so easy to master. And I want to dive into it. I think learning by using is a good way. Since javascript is different from other C-style language, what kind of project is good for learning? Thanks. ...

Explain a block of crazy JS code inside Sizzle(the CSS selector engine)

So, here is the function for pre-filtering "CHILD": function(match){ if ( match[1] === "nth" ) { // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6' var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec( match[2] === "even" && "2n" || match[2] === "odd" && "2n+1" || !/\D/.test( match...

image zooming using javascript or jquery

Hi I need some code to zoom an image when i mouse over that image, i want to zoom that image. Consider i have 10 images in y page, when i put mouse over in first image that image should zoom and when i mov to second second image should zoom like that... how can i do this, need some javascript or jquery something like that.But not sure...

Javascript array length incorrect on array of objects

Could someone explain this (strange) behavior? Why is the length in the first example 3 and not 2, and most importantly, why is the length in the second example 0? As long as the keys are numerical, length works. When they are not, length is 0. How can I get the correct length from the second example? Thank you. a = []; a["1"] = {"strin...

is there any light weight javascript date picker

I am using JQuery Date picker, but it is too much heavy, the minified version of ui.datepicker.min.js is of 44 KB. the images of datepicker have their own weigh. the jquery framework is of 59 KB. and total images on page are of around 80 KB the total html of page is around 70 KB and the css file size is around 72 KB. and much more, and a...

How to implement scrolling content widget

Example website is http://www.wikihow.com/Main-Page, check the "Recent Changes" heading on the right side. I am really amazed with the implementation of such scroll bars. Google also uses something very similar to this. Can someone give me some idea how to do this using jquery. ...

"Decompile" Javascript function? *ADVANCED*

[1] Ok, I don't even know how to call this, to be honest. So let me get some semi-pseudo code, to show what I'm trying to do. I'm using jquery to get an already existing script declared inside the page, inside a createDocument() element, from an AJAX call. GM_xmlhttprequest({ ... load:function(r){ var doc = document_from_string...

horizontal scrolling script

i need horizontal scrolling script in javascript, but don't have much time to write it, so could you give me some links where i can find it? could you help me please? ...

Problem with JS Selectbox Function

I have a selectbox with three options. When a user selects one of the three options, I want a specific div to appear below it. I am trying to write the code that dictates which specific box is to appear when each of the three options is selected. So far, I have only worked on the code that pertains to the first option. However, whenever ...

Determine which DOM elements the current text selection contains

I want to be able to find out which DOM elements are present in the text currently selected by the user in the browser. document.getSelection() would get us the currently selected text. But how can we determine which DOM elements are contained in this text selection? ...

jqGrid's setSelect does not work after reloadGrid

Hi, setSelection does not select the row, whose id is 2, right after a reloadGrid. $("#training").setGridParam({url: 'index.php?func=trainingmgr&aAction=refreshData'}); $("#training").trigger("reloadGrid"); $("#training").jqGrid('setSelection', "2″); However, setSelection can select the row, whose id is 2, when you take t...

Ajax frameworks small application

hi. I'm wondering if any of you have some ideas of a small application i can work on , just to get familiar with any of the Ajax Frameworks specially if it's related to Java like JMaki or ECHO 2 thanks . ...

Interoperability between two AES algorithms

Hello, I'm new to cryptography and I'm building some test applications to try and understand the basics of it. I'm not trying to build the algorithms from scratch but I'm trying to make two different AES-256 implementation talk to each other. I've got a database that was populated with this Javascript implementation stored in Base64. N...

looping through JSON array

Hi all. I have recently posted another question which straight away users pointed me in the right direction. $.ajax({ type: 'POST', url: './', data: 'token=' + token + '&re=8', cache: false, timeout: 5000, success: function(html){ auth(html); var JSON_array = eval(html); alert(JSON_a...

javascript multidimensional array?

Hi there, I hope I can make myself clear in English and in what I want to create. I first start with what I want. I want to make a IBANcalculator that can generate 1-n IBANnumbers and also validate a given IBANnumber. IBANnumbers are used in many countries for payment and the tool I want to make can be used to generate the numbers for ...

How to force div to always appear at bottom of page and stay there even after scrolling?

Pretty much all in subject, do i need use javascript to acheive this pr maybe css will fit well? Also I need that solution to work fine with IE6. If javascript is only solution then how to animate div to change position smoothly? Thanks in adavnce for any help ...

JQuery or javascript to find memory usage of page

Is there a way to find out how much memory is being used by a web page, or by my jquery application? Here's my situation: I'm building a data heavy webapp using a jquery frontend and a restful backend that serves data in JSON. The page is loaded once, and then everything happens via ajax. The UI provides users with a way to create m...

how to execute javascript in delphi?

I am coding a small app ,in middle i struck at some point where i have to execute javascript to get my data ? in my process ,i have to login to some url and then go to some page and have to get data from that . i done all this with indy idhttp ,i got all info except one column which needs javascript to get value ,then i tried using twe...

How do I bring an already existing open window to the front on top of other windows from another windows code?

The question was fairly descriptive but I'll describe it further. Basically, I have window1. Clicking a button link opens window2. Clicking a button in window2 opens window3, clicking a button in window3 should bring window2 back to the front of the screen on top of window2. I'm not sure how this is exactly done, however I have used an...

Properly registering JavaScript and CSS in MVC 2 Editor Templates

How do I properly register javascript blocks in an ASP.NET MVC 2 (RTM) Editor template? The specific scenario I'm in is that I want to use Dynarch JSCal2 DateTimePicker for my standard datetime picker, but this question is in general to any reusable javascript package. I have my template working properly now but it has my JS and CSS inc...