React - 向子组件添加类 [英] React - adding class to children components

问题描述

我正在使用 react 并且我有一个组件，它只需要渲染子项并根据条件为它们添加一个类.最好的方法是什么?

解决方案

我一周前就想通了，这就是我想要的:

export default class ContainerComponent extends React.Component {构造函数(道具){超级(道具)；this.modifyChildren = this.modifyChildren.bind(this);}修改孩子(孩子){const 类名 = 类名(child.props.className,{...其他类});const 道具 = {班级名称};返回 React.cloneElement(child, props);}使成为() {返回 (<div>{React.Children.map(this.props.children, child => this.modifyChildren(child))}

);}}

im using react and I have a component that simply needs to render the children and add them a class according to a condition. Whats the best way of doing it?

解决方案

I figured it out a week ago, this is what I wanted :

export default class ContainerComponent extends React.Component {
    constructor(props) {
        super(props);

        this.modifyChildren = this.modifyChildren.bind(this);
    }

    modifyChildren(child) {
        const className = classNames(
            child.props.className,
            {...otherClassses}
        );

        const props = {
            className
        };

        return React.cloneElement(child, props);
    }
    render() {
        return (<div>
            {React.Children.map(this.props.children, child => this.modifyChildren(child))}
        </div>);
    }
}

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