如何让匿名函数在事件处理程序中调用时保持其最初的作用域

this.plantName .

undefined .

.

TabLinks.prototype.plantName = '';

TabLinks.prototype.init = function() {
    this.updateTab('PlantDropDown', 'retrievePlants', 'retrieveAllPlants', 'tab3', function() { return this.plantName; });
};

function TabLinks() {
    this.updateTab = function(entityname, wsbyid, webservicename, parentContainer, defaultValue) {
        $("#" + parentContainer + "link").bind('click', function() {
            $.ajax({
                type: "POST",
...
                success: function(result) {
                    myData = JSON.parse(result.d);
                    $.ajax({
                        type: "POST",
...
                        success: function(result2) {
...
                                    myelem.value = JHEUtilities.testIsValidObject(defaultValue) ?
                                    defaultValue() :
                                    '';

这是有效的解决方案,我没有意识到函数的两个返回:

this.updateTab('PlantDropDown', 'retrievePlants', 'retrieveAllPlants', 'tab3',
function() {
    var app = this;
    return function() {
        return function() {
            return app.plantName;
        }
    }()
}
);

defaultValue()();