github.com/MontFerret/ferret@v0.18.0/pkg/stdlib/html/elements_count.go (about)

     1  package html
     2  
     3  import (
     4  	"context"
     5  
     6  	"github.com/MontFerret/ferret/pkg/runtime/core"
     7  	"github.com/MontFerret/ferret/pkg/runtime/values"
     8  )
     9  
    10  // ELEMENTS_COUNT returns a number of found HTML elements by a given CSS selector.
    11  // Returns an empty array if element not found.
    12  // @param {HTMLPage | HTMLDocument | HTMLElement} node - Target html node.
    13  // @param {String} selector - CSS selector.
    14  // @return {Int} - A number of matched HTML elements by a given CSS selector.
    15  func ElementsCount(ctx context.Context, args ...core.Value) (core.Value, error) {
    16  	el, selector, err := queryArgs(args)
    17  
    18  	if err != nil {
    19  		return values.None, err
    20  	}
    21  
    22  	return el.CountBySelector(ctx, selector)
    23  }