jquery-hash/jquery.jqueryhash.js at master · MiguelFernandez008/jquery-hash · GitHub

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(function ($) {
  // Variables
  let settings;
  const _jqWindow = $(window);

  // Plugin methods
  const methods = {
    init: function (options) {
      settings = $.extend(
        {
          hashes: [["", function () {}]],
          onlyOnLoad: false,
        },
        options
      );

      // We start a events listener
      methods.onCheckHash();
      if (!settings.onlyOnLoad) _jqWindow.on("hashchange", methods.onCheckHash);
    },
    // Add one handler
    onAddHandler: function (handler) {
      if (typeof handler[0] === "string" && typeof handler[1] === "function") {
        settings.hashes.push([handler[0], handler[1]]);
      } else {
        throw "Incorrect format of the handler.";
      }
    },
    // Update one handler
    onUpdateOne: function (handler) {
      // Variable used to error checking
      let _boolExits = false;
      if (typeof handler[0] === "string") {
        for (let i = 0; i < settings.hashes.length; i++) {
          if (settings.hashes[i][0] === handler[0]) {
            if (handler[1] && typeof handler[1] === "function") {
              settings.hashes[i][1] = handler[1];
              _boolExits = true;
              // No need to keep the for loop
              break;
            } else {
              throw "Error trying to execute the callback function.";
            }
          }
        }
        if (!_boolExits) throw "Trying to update an unexisting handler";
      }
    },
    // Remove only one handler
    onRemoveOneHandler: function (handler) {
      for (let i = 0; i < settings.hashes.length; i++) {
        if (settings.hashes[i][0] === handler) {
          settings.hashes.splice(i, 1);
          break;
        }
      }
    },
    // Remove all handlers
    onRemoveHashChange: function () {
      if (!settings.onlyOnLoad) {
        _jqWindow.off("hashchange", methods.onCheckHash);
        settings.hashes = [["", function () {}]];
      }
    },
    // Trigger one handler
    onTriggerOne: function (handler) {
      // Variable used to error checking
      let _boolExits = false;
      for (let i = 0; i < settings.hashes.length; i++) {
        if (settings.hashes[i][0] === handler) {
          if (
            settings.hashes[i][1] &&
            typeof settings.hashes[i][1] === "function"
          ) {
            settings.hashes[i][1]();
            _boolExits = true;
            // No need to keep the for loop
            break;
          } else {
            throw "Error trying to execute the callback function.";
          }
        }
      }
      if (!_boolExits) throw "Trying to trigger an unexisting handler";
    },
    // Function used to check the hash and fire the function associated with it
    onCheckHash: function () {
      if (window.location.hash) {
        let _strHash = window.location.href.split("#")[1];
        for (let i = 0; i < settings.hashes.length; i++) {
          if (settings.hashes[i][0] === _strHash) {
            if (
              settings.hashes[i][1] &&
              typeof settings.hashes[i][1] === "function"
            ) {
              settings.hashes[i][1]();
              // No need to keep the for loop
              break;
            } else {
              throw "Error trying to execute the callback function.";
            }
          }
        }
      }
    },
  };

  $.onHash = function (method) {
    if (methods[method]) {
      return methods[method].apply(
        this,
        Array.prototype.slice.call(arguments, 1)
      );
    } else if (typeof method === "object" || !method) {
      return methods.init.apply(this, arguments);
    } else {
      throw "This method " + method + " does not belong to this plugin.";
    }
  };
})(jQuery);