framework/validators/RangeValidator.php
public function clientValidateAttribute($model, $attribute, $view)
    {
        if ($this->range instanceof \Closure) {
            $this->range = call_user_func($this->range, $model, $attribute);
        }

        ValidationAsset::register($view);
        $options = $this->getClientOptions($model, $attribute);

        return 'yii.validation.range(value, messages, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ');';
    }
public function clientValidateAttribute($model, $attribute, $view)
    {
        if ($this->range instanceof \Closure) {
            $this->range = call_user_func($this->range, $model, $attribute);
        }

        ValidationAsset::register($view);
        $options = $this->getClientOptions($model, $attribute);

        return 'yii.validation.range(value, messages, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ');';
    }
{@inheritdoc}