Category Archives: JavaScript

Auto Resizing Textarea HTML5 WebComponent

Just finished my next experiment with HTML5 WebComponents. AcidJs.XTextarea is an advanced replacement of the classic <textarea /> HTML element, supporting custom events and auto resizing as-you-type. Check the extensive documentation in the distribution file (click the download button at the top of the demo page) or scroll this page to see the demos.



<acdisj-xtextarea placeholder="Type your message..." id="textarea-1" name="textarea-1" rows="5" cols="40"></acdisj-xtextarea>
<acdisj-xtextarea name="textarea-2" rows="10" cols="30" disabled></acdisj-xtextarea>
<acdisj-xtextarea name="textarea-5" autoresize="off" rows="5" cols="30"></acdisj-xtextarea>
<acdisj-xtextarea autofocus name="textarea-8" cols="60" rows="5"></acdisj-xtextarea>
<acdisj-xtextarea name="textarea-4" hidden></acdisj-xtextarea>

HTML Attributes of the Component

Apart from the form attributes like name, rows, cols, placeholder, spellcheck, autofocus, disabled and readonly etc. and the HTML standard attributes such is id and style AcidJs.XTextarea supports one custom property, allowing to turn the autoresizing off:

  • [autoresize="off"]

JavaScript API – Methods, Accessors and Events

The component supports all standard JavaScript methods querySelector, querySelectorAll, getElementById, etc. plus the following custom methods, accessors and events:


  • enable() – the method enables back a previously disabled textbox by using the disable() method, the enabled accessor or the disabled and readonly properties.
  • disable() – the method disables the queried textbox, so no user input is possible.
  • getValue() – the method returns the current value of the queried textbox, similar to the enabled accessor.
  • setValue(String|null) – the method sets new value to the queried textbox.


  • enabled – gets or sets the enabled state of the textbox. Use Boolean value for the setter.
  • value – gets or sets value of the textbox. The setter requires a string or empty value.


  • type – the event is triggered upon user input and returns an object, containing the current value of the textbox to which the event handler is bound to:
        data: "Lorem ipsum dolor sit amet..."
     * Bind to the "type" event of the textbox
     $("#my-textarea").on("type", function(e, data) {
         window.console.log("textbox event:", e.type, data);

If you share the same interest towards HTML5 Web Components as I do these days, make sure you read my relevant blog posts and further endeavors on my HTML5, CSS3 and JavaScript Experiments and Insight website.

Corporate BS Generator HTML5 WebComponent

Nothing serious this time, just a small fun HTML5 WebComponent, inspired by BS Generator, stitching-up (bullshit) sentences out of random buzzwords:




The component does not have it’s own methods, setters, getters or styles. Just use the tag wherever you want.

If you share the same interest towards HTML5 Web Components as I do these days, make sure you read my relevant blog posts and further endeavors on my HTML5, CSS3 and JavaScript Experiments and Insight website.

5 Years of Ribbon JS!

Ribbon JS is turning 5 this month! If you are planning to purchase a license, now it’s the time. Join the celebration and get any commercial license for the most advanced and feature-complete JavaScript, HTML5 and CSS3 MSOffice-like ribbon control available on the Internet today at a half price only in August 2015!

EU Cookie Consent HTML5 Web Component

AcidJs.XCookieConsent is a ready-made, fully customizable solution to the EU Cookie Law, wrapped as a custom HTML5 Web Component.


The component is being used on this blog as well. If you have dismissed the cookie consent bar, click the button below to open show it again:

Using the Tag *

First, go to the demo page and download the sample project, then try one of the following (you need just one instance of the tag on your page).

This website uses cookies to ensure you get the best experience.
<acidjs-xcookie-consent position="top" dismiss-button-text="Understood">
This website uses cookies to ensure you get the best experience.
<acidjs-xcookie-consent dir="rtl"></acidjs-xcookie-consent>

* The message should be set between the <acidjs-xcookie-consent></acidjs-xcookie-consent> tag and HTML is supported. If no content is set, the default text will be “This website uses cookies to ensure you get the best experience“.

HTML Attributes of the Tag

Apart from the standard HTML attributes, the following component-specific ones are supported:

  • position – optional position of the cookie consent bar. By default, position is "bottom", the possible value is "top".
  • dismiss-button-text – optional custom text for the dismiss button. If not set, the default value is "Got it!"

Direction is also supported – you could try dir="rtl" or dir="ltr" (default).

JavaScript Methods of the Tag

Apart from the standard JavaScript methods, getters and setters, the following component specific methods are also supported:

  • show() – to programmatically show the cookie consent bar. Calling this method will, however not delete the _acidjs_xcookie_consent_dismissed cookie.
    // JavaScript
    // jQuery
  • hide() –  to programmatically hide the cookie consent bar. This will, however not set the _acidjs_xcookie_consent_dismissed cookie.  Cookie will be set only if user clicks the button to dismiss the message.
    // JavaScript
    // jQuery

If you share the same interest towards HTML5 Web Components as I do these days, make sure you read my relevant blog posts and further endeavors on my HTML5, CSS3 and JavaScript Experiments and Insight website.

SVG and JavaScript Image Placeholders

Web developers love online services like lorempixel, placeimage and especially placekitten. They save us time during the initial coding of a website or service, providing customizable image placeholders so we can concentrate on the actual coding of the product instead of searching for suitable stock images. All of these services, however have one thing in common – they require Internet connection, which in my case is not always lightning fast. This is why I decided to create a similar service, which runs fully in the browser – AcidJs.ImgPlaceholder – a tiny JavaScript class (only 2Kb minified and g-zipped), utilizing base64-encoded SVGs and fully configurable via *-data properties.



Normal <img /> tags, supplied with data-imgplaceholder attribute:

<img data-imgplaceholder />
<img data-imgplaceholder width="200" height="100" />
<img data-imgplaceholder data-label="Custom Label" data-border-width="20" data-border-color="#b01e00" data-bgcolor="#f3b200" data-forecolor="#b01e00" />
<img data-imgplaceholder data-forecolor="#333" data-bgcolor="#00c13f" width="200" height="130" />
<img data-imgplaceholder data-border-color="#e34c26" data-label="HTML5, SVG and JavaScript" data-bgcolor="#f6f6f6" width="300" height="200" />
<img data-imgplaceholder data-forecolor="#333" data-border-width="20" data-bgcolor="#00c13f" width="200" height="140" />

HTML Attributes

Any standard HTML attributes for images like width, height, title, alt, etc plus the following class-specific attributes:

  • data-imgplaceholder – Required attribute, which marks the image tag as a placeholder.
  • data-label – Allows optional label for the placeholder. Default value is width x height.
  • data-forecolor – Optional label color. Default value is #666.
  • data-bgcolor – Optional background color. Default value is #d4d0c8.
  • data-border-width – Optional border width. Default value is 10.
  • data-border-color – Optional border color. Default value is #666.


  • render – The method is invoked automatically on page load, but it can be called also manually to create image placeholders on demand.

Supported Browsers

Any SVG-capable browser.

Check the AcidJs.ImgPlaceholder here. If you are also looking for similar text placeholders you may also want to give a try to XLipsum – a HTML5 WebComponent that can generate Lorem Ipsum texts in various formats.