framework/widgets/MaskedInput.php
protected function hashPluginOptions($view)
    {
        $encOptions = empty($this->clientOptions) ? '{}' : Json::htmlEncode($this->clientOptions);
        $this->_hashVar = self::PLUGIN_NAME . '_' . hash('crc32', $encOptions);
        $this->options['data-plugin-' . self::PLUGIN_NAME] = $this->_hashVar;
        $view->registerJs("var {$this->_hashVar} = {$encOptions};", View::POS_HEAD);
    }
protected function hashPluginOptions($view)
    {
        $encOptions = empty($this->clientOptions) ? '{}' : Json::htmlEncode($this->clientOptions);
        $this->_hashVar = self::PLUGIN_NAME . '_' . hash('crc32', $encOptions);
        $this->options['data-plugin-' . self::PLUGIN_NAME] = $this->_hashVar;
        $view->registerJs("var {$this->_hashVar} = {$encOptions};", View::POS_HEAD);
    }
Generates a hashed variable to store the plugin `clientOptions`.

Helps in reusing the variable for similar
options passed for other widgets on the same page. The following special data attribute will also be
added to the input field to allow accessing the client options via javascript:

- 'data-plugin-inputmask' will store the hashed variable storing the plugin options.

@param View $view the view instance
@author [Thiago Talma](https://github.com/thiagotalma)