Method arrayproto_includes

builtin_array.go:632–671

(call FunctionCall)

}

func (r *Runtime) arrayproto_includes(call FunctionCall) Value {
	o := call.This.ToObject(r)
	length := toLength(o.self.getStr("length", nil))
	if length == 0 {
		return valueFalse
	}

	n := call.Argument(1).ToInteger()
	if n >= length {
		return valueFalse
	}

	if n < 0 {
		n = max(length+n, 0)
	}

	searchElement := call.Argument(0)
	if searchElement == _negativeZero {
		searchElement = _positiveZero
	}

	if arr := r.checkStdArrayObj(o); arr != nil {
		for _, val := range arr.values[n:] {
			if searchElement.SameAs(val) {
				return valueTrue
			}
		}
		return valueFalse
	}

	for ; n < length; n++ {
		idx := valueInt(n)
		val := nilSafe(o.self.getIdx(idx, nil))
		if searchElement.SameAs(val) {
			return valueTrue
		}
	}

	return valueFalse
}

func (r *Runtime) arrayproto_lastIndexOf(call FunctionCall) Value {
	o := call.This.ToObject(r)