Placeholder attribute for textstring

[Myster]

We will often have a field like this:
Label: View product label
Description: Optional: website will show 'View product' if nothing entered here.

I would like to be able to set the placeholder text (alongside the custom validation) so it varies by usage. in this case the placeholder should be "View Product"

additional scenario
We have other fields like this
Label: Title
Description: Optional: Add a title if you need a longer title to show on the actual page, otherwise we will use 'Name' if nothing entered here. (Name will always be used in the navigation)

In this case, the placeholder would be the node name, we've actually written some javascript to do this already, and it may be too 'custom' to make a sensible Umbraco Core solution.
But perhaps simply putting {{Name}} in the placeholder input could enable this scenario.
Also the javascript we wrote means that the Title placeholder updates as you type in the Name field.

cascading scenario
We have another field: MetaTitle, which uses Title as it's placeholder if no Title it uses Name.
The solution here could be to have {{Title}} in the placeholder which takes the value from Title, and if Title is absent it takes the placeholder from Title (which would be the node name)

[nul800sebastiaan]

Thanks @Myster, this sounds an awful lot like the following issue to add default values to Umbraco: #7859

As a sidenote: there are already multiple options to add default values to Umbraco as you can read in #7859 too.

Additionally, I personally think it will be confusing to people to put these default values in a placeholder, to me that signals more that it is a "suggested" value. If I don't fill it in I would expect an empty string to be published. Maybe you can discuss that further on the other issue though.

I'll close this so that discussion can be continue on the central issue #7859.