regex - RegExp javascript : authorize slash -


i have regexp format url in html input. want remove character not letters or numbers.

so write regexp :

return url.tolowercase()             .replace(/^\s+|\s+$/g, "")              .replace(/[_|\s]+/g, "-")              .replace(/[^a-z\u0400-\u04ff0-9-]+/g, "")              .replace(/[-]+/g, "-")              .replace(/^-+|-+$/g, "")             .replace(/[-]+/g, "-");

but now, want accept slash character ( / ). how can accept character through replaces ? not sure regexp.

i want string :

category / test name = dog

to become :

category/test-name-dog

if want follow logic, need "protect" / symbol in negated character class (here - /[^a-z\/\u0400-\u04ff0-9-]+/g - not remove early), , replace -/- / final step. note duplicating .replace(/[-]+/g, "-") step, can remove first one.

return url.tolowercase()             .replace(/^\s+|\s+$/g, "")              .replace(/[_\s]+/g, "-")              .replace(/[^a-z\/\u0400-\u04ff0-9-]+/g, "")              .replace(/^-+|-+$/g, "")             .replace(/-+/g, "-")             .replace(/-*\/-*/g, "/"); 

url = "category / test name = dog";  document.body.innerhtml = "old: " + url.tolowercase()              .replace(/^\s+|\s+$/g, "")               .replace(/[_|\s]+/g, "-")               .replace(/[^a-z\u0400-\u04ff0-9-]+/g, "")               .replace(/[-]+/g, "-")               .replace(/^-+|-+$/g, "")              .replace(/[-]+/g, "-");              // ,  document.body.innerhtml += "<br/>new: " + url.tolowercase()              .replace(/^\s+|\s+$/g, "")               .replace(/[_\s]+/g, "-")               .replace(/[^a-z\/\u0400-\u04ff0-9-]+/g, "")               .replace(/^-+|-+$/g, "")              .replace(/-+/g, "-")              .replace(/-*\/-*/g, "/");


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