remove all characters like - // and other characters by using slug this is a code with using function

 function slug(str) {

    return str

        .toLowerCase()               // Convert to lowercase

        .trim()                      // Remove leading and trailing spaces

        .replace(/[^\w\s-]/g, '')    // Remove all non-word characters

        .replace(/\s+/g, '-')        // Replace spaces with hyphens

        .replace(/--+/g, '-');       // Replace multiple hyphens with a single hyphen

}

let a = "   This is an example of slug / // ///"

console.log(slug(a));