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I found this gist to detect changes on specified fiels of a object : https://gist.github.com/3138469
But it bind an event only on one field.
Someone know a function or a tricks to detect change on an entire Javascript Object ?
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We can check if a property exists in the object by checking if property !== undefined . In this example, it would return true because the name property does exist in the developer object.
Here Emp can act as a class in JavaScript. The body of Emp acts as a constructor and is called as soon as we create an object of the class. Creating Objects of Emp Class. Using the following syntax we can create an object of the Emp class: var Emp1 = new Emp();
2019 Update: These days this can be achieved using Proxy API in a much more efficient manner. The on-change library uses the Proxy API behind the scene to make this even easier.
2012 Update: I've just noticed that the author of Watch.js is referencing a library with much broader browsers' support. MultiGetSet.JS
When I want to achieve this I usually use Watch.js, you can watch a whole object or one attribute.
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This is currently not possible, you can only define getters/setters for individual properties.
Yet, there is a draft for Proxy objects which could do that. Today, it is only supported in Firefox' Javascript 1.8.5.
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