Loading scripts using async means that the loading process of your scripts will not interrupt the rendering of your webpage.
This allows your web page to render more quickly as parsing is not paused every time a script must be loaded. This also allows for multiple scripts to be loaded concurrently which is beneficial given that one script does not depend ...
The async attribute is useful for a script that:
Doesn't depend on whether the HTML is fully loaded
Shouldn't block the HTML
Yet should still be executed ASAP
A perfect example of this is an analytics script. If you loaded it without any attributes, it would block the rest of the page's rendering. If you loaded it with defer, it would run unnecessarily ...
Another way to use superscript like this...
<p>Examples of superscript</p>
<p>X <sub>4</sub>+ Y<sub>6</sub></p>
No. There is not normally a space between the "<" and following characters. The HTML tag will not be parsed correctly by browsers and it appears that a space in that position is not allowed in the HTML standards.
By this I mean is there anything like < html> or is there no such thing as a "command" that has a space after <?
No, you cannot have a space immediately after the < (less-than sign) in an HTML element's opening start tag.
From the HTML spec:
Start tags must have the following format:
The first character of a start tag must be a U+...
Yes, search engines read it as "Hello World".
No, this won't harm your SEO efforts.
<span> has no semantic meaning it clearly won't change the weight of the word to the search engines.
No recommendation should be needed because there should be no difference. The <span> element has no semantic meaning whatsoever.
Every Language has its own syntax and structure and in html assignment is done using "=" and in css assignment is done using ":" .
but in css you can use : for selecting specific element from html
This css is ...