I recently discovered a feature in Vue.js called watchers while working on my web app. As I was exploring the API documentation, I came across a flag known as deep. This flag caught my attention because it defaults to false. I'm curious to know what setting this flag to true would do to the watcher. Can you shed some light on its purpose and functionality?
This feature allows for the monitoring of nested changes in the targeted object's values. As stated in the documentation:
vm.$watch('targetObject', updateFunction, {
deep: true
})
vm.targetObject.nestedProperty = 123
// The update function will be triggered
By using a thorough observer, you can receive notifications about any alterations in nested attributes of the object.
If you observe a property defined as: property: {a: {b: 1}} without setting deep=true, you will miss out on changes made to b. However, enabling deep=true will ensure that you receive notifications for such changes.
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