JavaScript is a dialect of the standardized ECMAScript programming language, primarily used for scripting web-pages. Use this tag for questions regarding ECMAScript and its dialects/ implementations: JavaScript, JScript, etc., excluding ActionScript.

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2answers
44 views

Global UTF-encoding, the right way

I'm curious, as to what is the right way to have UTF-8 encoding on all web files All my files (incl. CSS and JS) are made and saved in UTF-8 encoding In PHP, I set the char-set on top of the main ...
2
votes
0answers
25 views

Store a formula in a table and use the formula in a javascript/PHP function [closed]

I have a MySql database where part of it handles instrument's depth of water. Each instrument has its own formula of calculation how depth the water when the operator collect the reading I stored the ...
2
votes
3answers
242 views

Is doing A/B tests using site redirection a bad practice?

I'm developing hotels websites here in Brazil. When the site is done, we do an A/B test with the old version to measure conversion and show to the hotel owner how good our site is. Due to the fact ...
1
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0answers
84 views

What could keep a javascript from loading properly on a page? [closed]

We have a vendor that switched our files over to a new server. We had a carousel on our homepage that was using javascript saved on the vendor server. After the move the carousel javascript won't ...
3
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1answer
283 views

Why is my Custom HTML tag not fired in Google Tag Manager

I have a Custom HTML tag in Google Tag Manager that is actually very simple. It consists of the following code (a GTM Macro): {{html generator}} This tag is only fired on the Thank-you page on my ...
13
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3answers
2k views

Lazy loading images and effects on SEO

We are using the following technique to lazy load images in our site: For all images we put in the src attribute a url for a default img (i.e. a loader) and put the actual image url in the data-src ...
12
votes
8answers
3k views

Is inline JavaScript good or bad?

I've currently switched from WordPress to Yii framework and an external developer is rebuilding my site. One thing I notice is that each time he invokes AJAX / jQuery the Yii way, it embeds inserts ...
1
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1answer
62 views

How does licensing affect my website?

I like to use prebuilt CSS/JS such as Foundation and PureCSS and I'm curious as to how I should go about displaying the licensing information, as well as how the license will affect the code that I ...
1
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0answers
36 views

How to clean PmWiki from JS:Includer-AWG and protect my site from future infections?

I'm hosting a site for an NGO for several years now. The site seems to be based on a PmWiki backend. I don't know much details because I'm just hosting the site and I'm not the guy who set it up. I ...
1
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1answer
121 views

How should I upload videos to Amazon S3?

I have a project which is basically a website like YouTube. I am hosting my videos with Amazon S3. I am confused as to whether I should upload videos (200mb+) by a PHP script or by browser-based ...
0
votes
1answer
222 views

How to add custom CSS for Addthis and validate on W3C validator?

I have Addthis code on the very bottom of the page HTML code, and then, after it I have CSS file with some custom decorations of Addthis widget. Everything looks like this: <script ...
0
votes
2answers
61 views

Dynamically load CSS

I'm using LESS for creating CSS and I'm considering using something like grunt-render on the server side in order to only load the CSS / JS that is needed for that page. My goal is to reduce overhead ...
1
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0answers
21 views

line monitoring of phonograms (songs) of radio [closed]

I need to create a monitoring system of phonograms (songs) of radio and television online through streaming so on, but my team and know the way to develop this monitoring system, I know there ...
4
votes
1answer
429 views

AngularJS SEO for static webpages (S3 CDN)

I've been looking into ways to improve SEO for angularJS apps that are hosted on a CDN like Amazon S3 (i.e. simple storage with no backend). Most of the solutions out there, PhantomJS, prerender.io, ...
0
votes
2answers
206 views

Will i18next affect SEO? What about screen readers?

I'm considering using i18next for translating text. But then it suddenly struck me; If labels / text is retrieved through javascript, won't that affect SEO? And what about screen readers for visual ...
0
votes
1answer
37 views

Is linked text searchable by crawlers?

I recently created a simple website for a web-app I made. The site and the app are both mobile oriented, so there is a limited amount of room for adding text content (I designed the interface to avoid ...
1
vote
1answer
288 views

Could too many HTTP requests using AJAX result in browser crashes?

We are running an ASP.NET web application, and recently we received a lot of crash reports from users. It sometimes crashes the Chrome browser, and sometimes it loads indefinitely. This is how our ...
6
votes
1answer
2k views

How does CloudFlare's Rocket Loader actually work (and how can a developer ensure compatibility)?

CloudFlare has quite a ground-breaking technology called Rocket Loader (both on free and paid accounts). But how does it actually work? They have a couple of pages that describe the technology, but ...
1
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2answers
72 views

Do spam bots load the DOM?

I have an issue where a form on my site is getting spammed. The form is actually a copy paste job from a CRM, so I cannot access any of the server side script to make a good human checker. In the ...
2
votes
1answer
49 views

JavaScript conditional “builds”

I'm working on a piece of JavaScript code that searches its host page for references from a certain source and when hovered, shows the definition/referenced text in a tooltip (something like Google ...
1
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0answers
192 views

Google analytics in E-commerce iframe not tracking source

I have a ticket booking system in an iframe. I am tracking sales but the source of the sales is not being recorded. I'm trying to shed some light on why this might be. The code on the parent page is ...
1
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0answers
35 views

Can a webpage dial a traditional phone land-line? [closed]

I am working a website for a sales team and I would like to know if there is a way to dial a traditional telephone land-line from a webpage using JavaScript or a plugin in conjunction with a piece of ...
1
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0answers
25 views

Does Google Analytics not track data accurately when reporting the same pages to multiple accounts?

I am reporting my traffic to 2 different Google Analytics accounts. Using Universal Analytics, I am doing something like: ga('create', 'UA-XXXX', 'auto'); ga('send', 'pageview'); ga('create', ...
1
vote
1answer
26 views

Will auto refresh put additional burden on my web app?

I am trying Alfresco share Community Edition. It has a discussion site where user can ask questions. The problem here is alfresco does not provide auto refresh out of the box. The user has to refresh ...
1
vote
1answer
17 views

how to send and display data from one domain to another? [closed]

I have my portal on asp.net, my friend have on php. He wants to me to return text data from my database by sending parameter and wants to display it on his portal. I have given him url say ...
0
votes
1answer
75 views

Declaring variables using single or multiple var statements. Performance wise [closed]

Someone once told me that it's better for Javascript performance to use one var statement rather then multiple. I.e. // Version A. Allegedly Faster var a = 1, b = 2, c = 3; // Version B. ...
2
votes
2answers
266 views

Is changing HTML with JavaScript bad for SEO?

Building web apps I don't have to worry so much about SEO for back end things so dynamically changing the HTML isn't an issue. I am using backbone.js with a front end site I'm building and the site ...
3
votes
2answers
108 views

Can Google index pages that use framesets generated by javascript (document.write)?

I was tasked to check on why Google can't seem to index a client site properly. The site uses a framework given by client's parent company (so we can't use other framework). The framework use ...
2
votes
3answers
313 views

rel=nofollow, JavaScript slider content, SEO

My website has all content on one page. I'm using JavaScript to slide (animate) between the various "subpages", so only the subpage content is shown. The menu buttons are as this: <a ...
2
votes
1answer
2k views

Internet Explorer iframe JavaScript access denied

I have a webpage on domain www.example.com that has an <iframe> with a page test.html from sub.example2.com. test.html includes a JavaScript from another domain: <script ...
0
votes
1answer
33 views

How to void JavaScript on submission?

My friend is kind of web-developer, beginner. I noticed that he didn't purify his user input on form submission, so I could easily save to his DB working <script>alert();</script>. After ...
0
votes
2answers
58 views

Question about external JavaScript and SEO [duplicate]

I have a question about external JavaScript and SEO. Assume I have a site called example.com with and index page of: <html> <body> <div class='main-container'> <script ...
2
votes
1answer
29 views

Google Experiments - can you run across the entire site?

Is it possible to run a Google Experiment A/B test across an entire website, rather than just a single page and a variation?
1
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2answers
107 views

Cannot add DataTables.net javascript into Joomla 1.5

I've been having this problem where i couldn't add Datatables.net javascript into my Joomla article. I have been trying to include it through Jumi. To say that my editor strips of the tag is ...
3
votes
3answers
267 views

How to redirect keeping the referral without server-side redirects?

I have an HTML page hosted in Dropbox that some external websites link to. I want to redirect to a different page using only HTML or Javascript, since I can't use any server-side redirects. My goal ...
0
votes
2answers
823 views

Can I defer loading Modernizr?

I'm using an HTML5 template that makes thorough use of the semantic tags and includes Modernizr up top to do the necessary IE coaxing. Google PageSpeed is complaining about the blocking JavaScript and ...
1
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1answer
453 views

Ecommerce product information missing with Google Universal Analytics

I recently upgraded to (Google) Universal Analytics but since the upgrade no product information is appearing in my Conversions reports. But, transactions do appear as do all of the other usual ...
0
votes
1answer
101 views

Best practice for scroll-up web page

As was pointed out in a question asked earlier, Google will not recognize when the DOM is altered via JavaScript after initial page load to start at the bottom and scroll up rather than down. ...
0
votes
3answers
175 views

How does Google treat multiple page title matches from same site?

I have several non-duplicate page titles that match a search query, say for the query 'stackexchange': <title>John Smith Popular Content</title> <title>John Smith ...
4
votes
1answer
89 views

Tracking dynamic events in Google Analytics?

I'm trying to implement dynamic events in my platform to trackearlos. My question is: For generating these events and who are trackeados in Google Analytics to put the push of the "onclick" to do ...
1
vote
1answer
43 views

I have multiple versions of the same landing page. How can I tell Google Analytics which is being viewed?

I'm sending a link to a landing page to a number of different companies and need to be able to tell Google Analytics which company is viewing the page and when. I of course have my original link to ...
5
votes
2answers
108 views

SEO & Return false on click event

I have a dropdown menu and I'm a trying to make it function more logically on touch devices, it currently following the link. On desktops the dropdown menu is displayed onmousehover and when the menu ...
4
votes
1answer
982 views

Is it necessary to specify content-type in http response header?

Except for the html document, currently all the files (css, javascript and images) served from my web server do not specify the content-type in the http response header. I happen to notice this as I ...
1
vote
0answers
13 views

Money exchange field [duplicate]

It was on hold for over 1.5 hour even after I made changes, so here again. I am making a money exchange website. On my homepage there will be 2 fields, The first field is a Bitcoin field and the ...
2
votes
2answers
11k views

Do pop-up ads have a negative impact on SEO?

I was observing Google results for months to determine if pop-up ads have a negative impact on SEO. Regarding my observations, sites without pop-ups usually get ranked better. Actually, that doesn't ...
1
vote
1answer
60 views

Effective upload to backend?

Let's say I have a website with frontend and backend. The website allows users to upload some data ranging from hundreds of MB to GB. How do you effectively upload this data? The easiest way would ...
3
votes
1answer
948 views

How to check if linked JavaScript and CSS files are being used?

I've inherited a website that seems to import every JS and CSS framework my predecessor could think of. Is there an easy way to analyze the site and determine which ones are actually being used? Or ...
1
vote
1answer
1k views

how to retrieve img alt text with jquery or javascript? [closed]

Which is the code with which we can retreive alternative text of image: It is a Cataloge with clothes. Dressers, Shirts, Skirts e.t.c. in front page of a site. The featured images of the categories ...
1
vote
1answer
321 views

No cache and Google AdSense performance

I'm developing a page where I need to avoid JavaScript caching by browser. I've added this header: <?php header('Cache-Control: no-cache, no-store, must-revalidate'); header('Pragma: no-cache'); ...
0
votes
2answers
316 views

Google Analytics and Whos.amung.us in realtime visitors, why such an enormous discrepancy?

Since years I use in a site both Google Analytics and Whos.amung.us, both Google analytics and whos.amung.us javascripts are inserted in the same pages in the tracked part of the site. In real-time ...