The download attribute allows for the downloaded filename to be specified to be something different than the name in the url.
This is available only on the A tag when an href attribute is already specified and works similarly to setting the header as:
Content-Disposition: attachment; filename="filename.pdf"
NOTE: this is not currently available in IE, Edge(prior to 13) or IOS Safari.
References:
Occasionally I’ve stumbled upon legacy javascript code that is used to determine javascript support by the visiting users. This often proves comical, because they are many times wasting time making checks for some “VERY OLD” browsers indeed! Here’s a rundown of the versions of javascript as well as their release dates and some common browser versions that implemented them.
The language attribute has long been deprecated and should generally be avoided, it’s original purpose was to support other scripting languages, notably VBScript, or particular JavaScript versions. Modern conventions rely on specifying the MIME type instead via the ‘type’ attribute.
<SCRIPT LANGUAGE="JavaScript"> is now <script type="text/javascript">
<SCRIPT LANGUAGE="JavaScript1.1"> is now <script type="text/javascript1.1">
<SCRIPT LANGUAGE="VBScript"> is now <script type="text/vbscript">
<SCRIPT LANGUAGE="TCL"> is now <script type="text/tcl">
REFERENCES:
One of the great improvements for forms in HTML5 is the ability to display placeholder text in your INPUT fields. Traditionally, this has required developers to add a variety of JavaScript methods to dynamically update the field, now (for browsers that support it) you can use a simple attribute on your tag elements.
OLD:
<input type="text" value="Search" onfocus="if(this.value == 'Search'){this.value = '';}" onblur="if(this.value == ''){this.value = 'Search';}" />
NEW:
<input type="text" value="" placeholder="Search" />
REFERENCES: