* fix: replace sh with shell fix replace terminal with shell fix replace node with js fix replace output with shell fix replace cs with csharp fix replace c++ with cpp fix replace c# with csharp fix replace javasctipt with js fix replace syntax with js fix replace unix with shell fix replace linux with shell fix replace java 8 with java fix replace swift4 with swift fix replace react.js with jsx fix replace javascriot with js fix replace javacsript with js fix replace c++ - with cpp fix: corrected various typos fix: replace Algorithm with nothing fix: replace xaml with xml fix: replace solidity with nothing fix: replace c++ with cpp fix: replace txt with shell fix: replace code with json and css fix: replace console with shell
592 B
592 B
title, localeTitle
title | localeTitle |
---|---|
Override Default Props | 覆盖默认道具 |
覆盖默认道具
此挑战使您可以覆盖Items组件的props quantity
的默认值。其中, quantity
默认值设置为0
。
const Items = (props) => {
return <h1>Current Quantity of Items in Cart: {props.quantity}</h1>
}
Items.defaultProps = {
quantity: 0
}
要覆盖默认的props值,要遵循的语法是
<Component propsName={Value}/>
在语法之后,应在给定代码下面声明以下代码
<Items quantity={50}/>
这将覆盖值0
到50