JavaScript questions that don't deserve their own thread

var _Game_Interpreter_pluginCommand = Game_Interpreter.prototype.pluginCommand;
  Game_Interpreter.prototype.pluginCommand = function(command, args) {
    _Game_Interpreter_pluginCommand.call(this, command, args);
    if (command === 'RandomMovement') {
      var gc = Game_Character;
      character = this.character();
      moveRoute = {
        list:[
          {code: gc.ROUTE_TURN_RANDOM, indent: null},
          {}
        ],
        repeat: true,
        skippable: true,
        wait: true
      };
      character.forceMoveRoute(moveRoute);
    }
  };

    function Scene_CustomShop() {
        this.initialize.apply(this, arguments);
    }

    Scene_CustomShop.prototype = Object.create(Scene_MenuBase.prototype);
    Scene_CustomShop.prototype.constructor = Scene_CustomShop;

    Scene_CustomShop.prototype.initialize = function() {
        Scene_MenuBase.prototype.initialize.call(this);
    };

    Scene_CustomShop.prototype.create = function() {
        Scene_MenuBase.prototype.create.call(this);
        this.createGoldWindow();
        this.createDummyWindow();
        this.createListWindow();
        this.createBuyConfirmMenu();
    };

    Scene_CustomShop.prototype.createGoldWindow = function() {
        //this._goldWindow = new Window_Gold(0, this._helpWindow.height);
        this._goldWindow = new Window_Gold(0, 0);
        this._goldWindow.x = Graphics.boxWidth - this._goldWindow.width;
        // Add window
        this.addWindow(this._goldWindow);
    };

    Scene_CustomShop.prototype.createDummyWindow = function() {
        var wy = this._goldWindow.y + this._goldWindow.height;
        var wh = Graphics.boxHeight - wy;
        this._dummyWindow = new Window_Base(0, wy, Graphics.boxWidth, wh);
        this.addWindow(this._dummyWindow);
    };

    Scene_CustomShop.prototype.createListWindow = function() {
        // Create window
        var wy = this._goldWindow.height;
        var ww = Graphics.boxWidth;
        var wh = Graphics.boxHeight - wy;
        this._csListWindow = new Window_CustomShop(0, wy, ww, wh);
        // Set handlers
           this._csListWindow.setHandler('ok',     this.onBuyOK.bind(this));
        this._csListWindow.setHandler('cancel', this.popScene.bind(this));
        // Add window
        this.addWindow(this._csListWindow);
        // Activate window
        this._csListWindow.activate();
        this._csListWindow.select(0);
    };

    Scene_CustomShop.prototype.createBuyConfirmMenu = function() {
        var wy = this._dummyWindow.y;
        this._confirmBuyWindow = new Window_CSBuyConfirm(0, wy);
        this._confirmBuyWindow.hide();
        this.addWindow(this._confirmBuyWindow);
    };

    Scene_CustomShop.prototype.start = function() {
        Scene_MenuBase.prototype.start.call(this);
    };

    Scene_CustomShop.prototype.update = function() {
        Scene_MenuBase.prototype.update.call(this);
    };

    Scene_CustomShop.prototype.onBuyOK = function() {
        this._item = this._csListWindow.item();
        this._csListWindow.hide();
        this._confirmBuyWindow.setup(this._item[0], this._item[1]);
        this._confirmBuyWindow.show();
        this._confirmBuyWindow.activate();
    };

this.contents.clear()

<Custom Deselect Effect>

var paramId = 6;

target._agiExp = target._agiExp || 0;

var maxAgiExp = //the current value of the actor's Agility Value\\

if (target.result().missed || target.result().evaded) {

var agiExpGain = 1;

target._agiExp += agiExpGain;

if (target._agiExp >= maxAgiExp) {

var agiGain = Math.floor((Math.random() * 3) + 1);;

target.addParam(paramId, agiGain);

target.startAnimation(123);

target._agiExp = 0;

}

}

</Custom Deselect Effect>