Javascript "this"范围

Question

我正在编写一些 JavaScript 代码。我对这个关键字有点困惑。如何在 dataReceivedHandler 函数中访问 logger 变量？

MyClass: {
    logger: null,
    init: function() {
        logger = LogFactory.getLogger();
    },
    loadData: function() {
        var dataReceivedHandler = function() {
            // how to access the logger variable here? 
        }

        // more stuff
    }
};

Answer 1

您可以在 loadData 函数中执行类似的操作来访问您的对象...

MyClass: {
    logger: null,
    init: function() {
        this.logger = LogFactory.getLogger();
    },
    loadData: function() {
        var self = this;
        var dataReceivedHandler = function() {
            // how to access the logger variable here? 
            self.logger.log('something');
        }

        // more stuff
    }
};