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entry on willReceiveProps not triggered on mounting

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Cheng Lou
2013-10-02 00:16:49 -04:00
committed by Connor McSheffrey
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cookbook/cb-09-componentWillReceiveProps-not-triggered-after-mounting-tip.md Normal file
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id: componentWillReceiveProps-not-triggered-after-mounting-tip
title: componentWillReceiveProps not triggered after mounting
layout: docs
permalink: componentWillReceiveProps-not-triggered-after-mounting-tip.html
---
`componentWillReceiveProps` isn't triggered after the node is put on scene. This is by design. Checkout [other lifecycle methods](component-specs.html) for the one that suits your needs.
The reason for that is because `componentWillReceiveProps` often handles the logic of comparing with the old props and act upon changes; not triggering it at mounting, where there are no old props, clearly defines what the method should do.

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id: componentWillReceiveProps-not-triggered-after-mounting
title: componentWillReceiveProps not triggered after mounting
layout: docs
permalink: componentWillReceiveProps-not-triggered-after-mounting.html
---
### Problem
`componentWillReceiveProps` isn't triggered after the node is put on scene.
### Solution
This is by design. Checkout [other lifecycle methods](component-specs.html) for the one that suits your needs.
### Discussion
`componentWillReceiveProps` often handles the logic of comparing with the old props and act upon changes; not triggering it at mounting, where there are no old props, clearly defines what the method should do.