PHP函数：无法在Javascript Onclick事件中传递字符串值

Question

I am facing a problem. I am using visual composer shortcode in my WP template and its working well, but now I have added an onClick button to pass some parameter.

When I pass the number its works but when I pass the string it's not working.

function my_functions($atts, $content = null){

        $title = 'Test & Title';
        $id = '123456'
        $envy_html_template =' 
                <button id="btnAdd" 
                    class="add-to-cart sc-add-to-cart"
                    onclick="addToCart('.$title.','.$id.' )" 
                >Test
                </button>';
        wp_reset_query();


    return $envy_html_template;
}
add_shortcode('my_template', 'my_functions');

Answer 1

You should pass string parameter like this

 onclick="addToCart(\'.$title.'\' , \'.$id.'\')

This will work for you.