github.com/godaddy-x/freego@v1.0.156/goquery/query.go (about)

     1  package goquery
     2  
     3  import "golang.org/x/net/html"
     4  
     5  // Is checks the current matched set of elements against a selector and
     6  // returns true if at least one of these elements matches.
     7  func (s *Selection) Is(selector string) bool {
     8  	return s.IsMatcher(compileMatcher(selector))
     9  }
    10  
    11  // IsMatcher checks the current matched set of elements against a matcher and
    12  // returns true if at least one of these elements matches.
    13  func (s *Selection) IsMatcher(m Matcher) bool {
    14  	if len(s.Nodes) > 0 {
    15  		if len(s.Nodes) == 1 {
    16  			return m.Match(s.Nodes[0])
    17  		}
    18  		return len(m.Filter(s.Nodes)) > 0
    19  	}
    20  
    21  	return false
    22  }
    23  
    24  // IsFunction checks the current matched set of elements against a predicate and
    25  // returns true if at least one of these elements matches.
    26  func (s *Selection) IsFunction(f func(int, *Selection) bool) bool {
    27  	return s.FilterFunction(f).Length() > 0
    28  }
    29  
    30  // IsSelection checks the current matched set of elements against a Selection object
    31  // and returns true if at least one of these elements matches.
    32  func (s *Selection) IsSelection(sel *Selection) bool {
    33  	return s.FilterSelection(sel).Length() > 0
    34  }
    35  
    36  // IsNodes checks the current matched set of elements against the specified nodes
    37  // and returns true if at least one of these elements matches.
    38  func (s *Selection) IsNodes(nodes ...*html.Node) bool {
    39  	return s.FilterNodes(nodes...).Length() > 0
    40  }
    41  
    42  // Contains returns true if the specified Node is within,
    43  // at any depth, one of the nodes in the Selection object.
    44  // It is NOT inclusive, to behave like jQuery's implementation, and
    45  // unlike Javascript's .contains, so if the contained
    46  // node is itself in the selection, it returns false.
    47  func (s *Selection) Contains(n *html.Node) bool {
    48  	return sliceContains(s.Nodes, n)
    49  }