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如何在 Pocket Option 注册和存款

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React onClick event on component

I have a React component called that has many child s (another React component). I want to be able to declare an onClick event on each from within . I have tried doing the following:

Needless to say, I do not get any "Clicked!" coming up in my console. The React 如何在 Pocket Option 注册和存款 inspector in Chrome indicates that an onClick event is registered, with the above function body as it should be.

I conclude, therefore, that I can't register onClick events on the actual tags (I'如何在 Pocket Option 注册和存款 m not sure why this is, however). How do I go about achieving this otherwise?

2 Answers 2

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This depends on your SensorItem component's definition. Because SensorItem isn't a native DOM element but, like you said, another React component, onClick as defined here is simply a property of that component. What you need to do is, inside of the SensorItem component pass the onClick prop to an DOM component's onClick event:

Got it, I had thought perhaps 如何在 Pocket Option 注册和存款 that a component automatically passed on any events to the main DOM Node ( getDOMNode() ), but there's no reason this should be the case.

I had thought, assumed, was certain that those geniuses at Facebook would've thought it would be convenient. Not convenient enough, I guess.

To add to that, you can pass through all props to the main DOM Node fairly easily with argument destructuring syntax like this: ``` const SensorItem = (<. props>) => < return (

> .
); > ``` That makes it future-proof if you need to add onDoubleClick, onKeyDown, etc.

Problem

The problem, as being explained in another answer, is that onClick on a React component (contrary to native DOM element like or

) is treated as passing of component property, and not of a DOM event handler. And as most likely your component doesn't declare onClick property, that property value simply gets lost.

Solution

The most straightforward solution is to add onClick property explicitly on SensorItem component, then pass it to the root DOM element of that component:

But the solution that usually works best for me is to group all the undefined component's properties using object destructuring notation, then pass them all to the root DOM element within that component. This way you can pass onClick , onHover , className etc. without needing to define separate properties for each one of them:

No matter which of the two approaches you use, the handler will now work, as it'll now be attached to the root DOM element of SensorItem :

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如何在 Pocket Option 注册和存款

Cisco packet tracer汉化包 V1.0 绿色免费版 / Cisco packet tracer汉化补丁下载 版本

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  • 软件授权: 免费软件
  • 更新时间: 2017-12-15
  • 软件类别: 杂类工具
  • 软件官网: http://www.downxia.com
  • 应用平台: Win2003,WinXP,Vista,Win7,Win8

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