placeholderstring

noun
UK /ˈpleɪshəʊldə strɪŋ/
US /ˈpleɪshoʊldər strɪŋ/

A placeholder string is a pretend word or text that stands in for real information until you put the real thing in.

The website showed a placeholder string like 'Your Name Here' until the user typed their real name.


OTHER MEANINGS

2. In computer programming, a temporary text value used in code before the actual data is known.

The developer used a placeholder string to test the login form.

3. A label in a document or form that marks where specific information should later be inserted.

The contract had a placeholder string for the client's address.

4. A sample piece of text used in design mockups to show how real content will look.

The designer filled the layout with a placeholder string so the client could see the spacing.