Finding Things

The primary entry points into DOM are document.query() and document.queryAll(). Both take a CSS selector as the argument. The former returns a single matching element; the latter returns a list of all matching elements. Here are some simple examples:

dom/finding.dart
 
document.query(​'h1'​); ​// => First <h1> in the document
 
document.query(​'#people-list'​); ​// => Element with id of 'people-list'
 
document.query(​'.active'​); ​// => First element with 'active' class
 
document.queryAll(​'h2'​); ​// => All <h2> elements

The query and queryAll methods are actually methods of the Element class. Document, like every other class representing a bit of the DOM, subclasses Element. In practice, this means we can limit queries to ...

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