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Placeholder attribute

As explained in Build a Website with ChatGPT

The placeholder attribute specifies advisory hint text displayed in an empty text-entry control.

The placeholder attribute adds advisory hint text to an empty text box. The hint briefly tells users what to enter and disappears when they start typing. section 8.3.2

Email-entry hint

An email text box can use the placeholder text "Type your email address". Users see the hint until they begin entering an address. section 8.3.2

Customize the hint by changing the placeholder attribute value in the HTML. Edit only the text between the double quotation marks, and leave the form control’s type and name values unchanged. section 8.6

How Build a Website with ChatGPT covers it

How deep it goes
Explains the display-and-disappear behavior and shows how to customize the value, without covering deeper implementation details.
Examples
Uses an email text box with the hint "Type your email address".
What it assumes
Assumes familiarity with basic form text boxes and HTML attributes while explaining the hint’s purpose from the beginning.
What you can do after
Operate/configure it by changing placeholder text in an HTML form without altering type or name attributes.
How it connects
Connects placeholder text with text boxes, form controls, initial values, required fields, and size constraints.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Build a Website with ChatGPT. The section links point to the parts of the book it draws on.