JS validate URL

validateurl.js

function validateUrl(url) {
      var re = /^(ftp|http|https):\/\/[^ "]+$/.test(url);
      return re;
    }

    function validate(data) {
      var url = data.val();
      var $result = data.next();
      $result.text("");

      if (validateUrl(url)) {
        $result.text(url + " is valid :)");
        $result.css("color", "green");
        return true;
      } else {
        $result.text(url + " is not a link :(");
        $result.css("color", "red");
        return false;
      }
    }
    
    var validState = true;
    $(document).on('click','.item_link',function (e){
      e.preventDefault();
      var url = $(this);
      if(!validate(url)){
        validState = false;
        return false;
      }else{
        validState = true;
      }
      
    });