javascript

Why is it bad practice to use links with the javascript: "protocol"?

Hello everyone, In the 1990s, there was a fashion to put Javascript code directly into <a> href attributes, like this: <a href="javascript:alert('Hello world!')">Press me!</a> And then suddenly I stopped to see it. They were all replaced by things like: <a href="#" onclick="alert('Hello world!')">Press me!</a> For a link whose sol...

Does Javascript/EcmaScript3 support ISO8601 date parsing?

How are you currently parsing ISO8601 dates e.g. 2010-02-23T23:04:48Z in JavaScript? Some browsers return NaN (including Chrome) when using the code below, FF3.6+ works though. <html> <body> <script type="text/javascript"> var d = Date.parse("2010-02-23T23:04:48Z"); document.write(d); </script> </body> </html> You can try this...

How do I force a Coldfusion cfc to output numeric data over JSON as a string?

I'm calling a Coldfusion component (cfc) using jQuery.post(). I need an integer or string representation of the number returned for use in a URL. {"PAGE":"My Page Title","ID":19382} or {"PAGE":"My Page Title","ID":"19382"} Instead what I get back is a decimal: {"PAGE":"My Page Title","ID":19382.0} Needed to update the following HTM...

Is there a way to substr a value returned by toShortString()?

I am working with openlayers and I can get a point on a map but I can't get the individual coords. feat = drawLayer.features[0]; var geom = feat.geometry; var loca = geom.toShortString(); var long = loc.substr(0,9); alert(geom.toShortString());//returns the correct coords in xx.xxx,xx.xxx format ...

Add to a table with javascript

I have a table which looks like this: <table id='t'> <thead> .... </thead> <tbody id='t_tbody'> </tbody> </table> thead is filled with content tbody is empty I want to use javascript to add this (for example) to t_tbody: <tr> <td>Name</td> <td>Points</td> <td>Information</td> </tr> How can I d...

Detect if visitor is on index page with client side scripting

Is it possible to detect if a visitor is on the index page or domain root with client side scripting? I figure javascript would be the best method as I would like to append a value to an image file based on wether a visitor is on the home page or not. Non-index page: <img src="/img/logo.png" /> Index page: <img src="/img/logo-home....

Javascript Buildmanagement - "Must have" tools?

Are there any must have tools for Java Script (RIA) development like maven, jUnit, Emma, link4j etc. for Javascript? What is the best way to set up a continous integration system for a bigger application or framework? How do projects like jQuery test their code? How to manage dependencies and different project configurations? tools i kn...

Can a Javascript bookmarklet overlay an image on a web page?

Can a bookmarklet be used to overlay an image on a web page? Not as a pop-up, but as a image positioned by CSS and with a high z-index to display on top of other elements. And without a mask i.e., Shadowbox or similar jQuery effect. Just an image from a URL and positioned in the bottom left hand corner of the browser window. This is wha...

Javascript Expression "document.body.getElementsByTagName();" Vs "document.getElementsByTagName();"

Dear experts, I am quite new to javascript and I often see coders use those lines interchangeabaly. document.body.getElementsByTagName(); and document.getElementsByTagName(); What is the difference, benefits? Does this have anything to do with FF and IE? ...

Image anotation (Highlighting parts of an image, Scrubbing an image) using Javascript

Hi, We are working on an application and would like users to annotate an image. By annotation I mean, the ability to highlight parts of an image. Once the image is highlighted, and submit is clicked, the highlighted attributes (color, area highlighted) are submitted to the server to be stored in database. Is this possible using javascr...

Javascript keeps undefining my vars, it's harshing my buzz. Help?

This is my first experience with javascript, and... Well... Ugh. Here's what's happening: function step_1(id) { //blah blah step_2(id); } function step_2(id) { //blah blah step_3(id); } function step_3(id) { //blah blah alert(id); } step_1(0); // I can stick any number here, same thing happens... The alert pop...

setting variables and values in html & js

i have one js file in that js file i have following variables var image_path="images"; var style_path="style"; i want to use these variables in html file(s) like in image statement <img src="path from js/logo.gif"> or in style sheet statement <link rel="stylesheet" href="path from js/constant.css" type="text/css" ...

Get jQuery post redirect response

I've written some HTML/Javascript that sits on a third-party server for security reasons. This page performs a javascript post to another page on the same site. However, instead of responding with useful data, it instead wants to perform a redirect (if you would post via a normal HTML form to this page, it would redirect your browser)....

understanding floating point variables

There is some problem, i can't understand anyway. look at this code please <script type="text/javascript"> function math(x) { var y; y = x*10; alert(y); } </script> <input type="button" onclick="math(0.011)"> What must be alerted after i click on button? i think 0.11, but no, it alerts 0.10999999999999999 explain please this...

Create new div arround anchor link when clicked

How can I achieve this behaviors onclick with jquery : default state: <a href="something.html">Anchor</a> click state <div class="highlight"> <a href="something.html">Anchor</a> </div> ...

document.forms.gallery_form.submit is not a function

I swear, I have this exact thing working on another page. I'm such a javascript noob it's embarrassing... function delete_gallery() { var gallery = document.getElementById('gallery_id').value; var form = document.getElementById('gallery_form'); form.setAttribute('action', 'index.php?action=delete&section=galleries&id='+galle...

Is there a JQuery plugin that can give you a tooltip underneath your mouse?

Just a simple jquery tooltip when you rollover a div. ...

Any way to identify a redirect when using jQuery's $.ajax() or $.getScript() methods?

Within my company's online application, we've set up a JSONP-based API that returns some data that is used by a bookmarklet I'm developing. Here is a quick test page I set up that hits the API URL using jQuery's $.ajax() method: http://troy.onespot.com/static/3915/index.html If you look at the requests using Firebug's "Net" tab (or the...

Rotating images + content - jQuery or MooTools?

I've found a feature on two different websites that I'd like to include on one of my web projects, but I can't figure out how they're doing it. I think they're using either jQuery or mootools, but I'm not sure. http://www.x-plane.com/index_desktop.html I'm new here so I don't have the reputation to post the other link, but if you do ...

How do I use JQuery to do this? (Loop through the classes)

Suppose my code is like this: <td class="apple"> <div class="worm"> text1 </div> </td> <td class="apple"> <div class="worm"> text2 </div> </td> <td class="apple"> <div class="worm"> text3 </div> </td> How can I loop through everything with "td class apple", and then grab the text of the div inside with id "worm", and then set each o...