pQuery\DomNode::val PHP Метод

    public function val($value = null)
    {
        switch (strtolower($this->tag)) {
            case 'select':
                if ($value === null) {
                    // Return the value of a selected child.
                    return $this->query('option:selected')->attr('value');
                } else {
                    // Select the option with the right value and deselect the others.
                    foreach ($this->query('option') as $option) {
                        if ($option->attr('value') == $value) {
                            $option->attr('selected', 'selected');
                        } else {
                            $option->removeAttr('selected');
                        }
                    }
                    return $this;
                }
            case 'textarea':
                if ($value === null) {
                    // Return the contents of the textarea.
                    return $this->getInnerText();
                } else {
                    // Set the contents of the textarea.
                    $this->setInnerText($value);
                    return $this;
                }
            case 'input':
                switch (strtolower($this->getAttribute('type'))) {
                    case 'checkbox':
                        if ($value === null) {
                            return $this->prop('checked') ? $this->getAttribute('value') : null;
                        } else {
                            if (!$value) {
                                $this->deleteAttribute('checked');
                            } else {
                                $this->setAttribute('value', $value);
                                $this->setAttribute('checked', 'checked');
                            }
                            return $this;
                        }
                }
        }
        // Other node types can just get/set the value attribute.
        if ($value !== null) {
            $this->setAttribute('value', $value);
            return $this;
        }
        return $this->getAttribute('value');
    }