Object.observe（） 观察对象

这个对象方法可以用来异步观察对javascript对象的改动：

// Let's say we have a model with data

var model = {};

 

// Which we then observe

Object.observe(model, function(changes)  {

    // This asynchronous callback runs

    changes.forEach(function(change)  {

        // Letting us know what changed

        console.log(change.type, change.name, change.oldValue);

    });

});

 

 

 

http://www.html5rocks.com/en/tutorials/es7/observe/?redirect_from_locale=zh