May insert variable value into a HTML tag attribute?

[zfengg]

For example, may I insert the value of a local variable descr = "Homepage of A Group" into the HTML meta tag like <meta property="og:description" content= $descr >?

[tlienart]

in your case, descr seems like a global variable in which case you'd put that in config.md and do:

<meta property="og:description" content="{{ descr }}" >

which will then show on all pages

if you do want this only on a single page, set the default value in config.md to empty descr = "" then on any page you want a specific value descr = "..." and in layout:

{{isnotempty descr}}
  <meta property="og:description" content="{{ descr }}" >
{{end}}

kindly close this issue if it solves your problem

[zfengg]

Thank you for the clear explanation. It works! Now I see that the underlying pipeline deals with all the

{{ ... }}

and there is no difference in their positions in the pre-produced HTML.