HTML Tutorial

The language for building web pages.

Chapter Quiz Exercises
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HTML Introduction HTML Introduction HTML Editors HTML Elements HTML Basic HTML Attributes HTML Elements HTML Attributes HTML Headings HTML Paragraphs HTML Styles HTML Formatting HTML Quotations HTML Comments HTML Colors HTML CSS HTML Links HTML Images HTML Tables HTML Lists HTML Block & Inline HTML Div HTML Classes HTML Id HTML Iframes HTML JavaScript HTML Head HTML Layout HTML Responsive HTML Entities HTML Forms HTML Input Types HTML Canvas HTML SVG HTML Video HTML Audio HTML Geolocation HTML Web Storage HTML Favicon HTML Semantics HTML Buttons HTML Computercode HTML Symbols HTML Emojis HTML Drag and Drop HTML Form Elements HTML Accessibility HTML YouTube

HTML Id

The HTML id Attribute

The id attribute specifies a unique id for an HTML element. The value of the id attribute must be unique within the HTML document. The id attribute is used by CSS and JavaScript to select and access a specific element.

Rules:

  • Each id must be unique per page
  • Cannot contain spaces
  • CSS selects with #idname
  • JS accesses with document.getElementById()

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Topics
HTML Introduction HTML Introduction HTML Editors HTML Elements HTML Basic HTML Attributes HTML Elements HTML Attributes HTML Headings HTML Paragraphs HTML Styles HTML Formatting HTML Quotations HTML Comments HTML Colors HTML CSS HTML Links HTML Images HTML Tables HTML Lists HTML Block & Inline HTML Div HTML Classes HTML Id HTML Iframes HTML JavaScript HTML Head HTML Layout HTML Responsive HTML Entities HTML Forms HTML Input Types HTML Canvas HTML SVG HTML Video HTML Audio HTML Geolocation HTML Web Storage HTML Favicon HTML Semantics HTML Buttons HTML Computercode HTML Symbols HTML Emojis HTML Drag and Drop HTML Form Elements HTML Accessibility HTML YouTube