The Magic of Provide/Inject in Vue.js

Dependency Injection in Vue.js will be a breeze with Provide and Inject duo

Sandip Shrestha
Jun 21, 2019 · 2 min read

Often times is overwhelming to look at a larger component as a whole because there may be too much going on, breaking things down allows us to simplify a complex problem and focus our attention in more manageable pieces. One obvious complication of breaking down a large component is data flow and management.

Provide and Inject are used together to allow an ancestor component to serve as a dependency injector for all its descendants, regardless of how deep the component hierarchy is, as long as they are in the same parent chain.


For example, a parent component can inject validation messages in input components. Below is an example where the the component is passing down an variable down to component.

A basic example of provide/inject

You can also provide and inject a function. The below example demonstrates passing and functions using provide/inject.

Injecting functions using provide/inject

Note: the and bindings are NOT reactive. This is intentional. However, if you pass down an observed object, properties on that object do remain reactive.

Reactive binding in provide/inject

Injections are available in and . So, you could set defaults to injected data or you can use injections as initial .

More on provide/inject on the official documentation here.

Vue.js Developers

Helping web professionals up their skill and knowledge of…

Sandip Shrestha

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Programmer in the making and making programming fun in the process.

Vue.js Developers

Helping web professionals up their skill and knowledge of Vue.js

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