javascript - 基于 this.props.params.id react 过滤器数组

Question

我有以下组件:

import React from 'react';

import porgectsCollection from './../data/projectInfo.js';

class SingleProject extends React.Component {
  getProjectId() {
    let projectID = porgectsCollection.filter(el => {
        return (el.title = {this.props.params.id});
    });
  }
  render () {
    console.log(this.getProjectId);
    return (
        <div>
            <h2>{this.props.params.id}</h2>
        </div>
    );
  }
}

export default SingleProject;

和我的routes.jsx如下:

import React from 'react';
import { Route, Router, IndexRoute } from 'react-router';
import ReactDOM from 'react-dom';

import Wrapper from './../wrapper.jsx';
import Home from './../home.jsx';
import Projects from './../projects.jsx';
import SingleProject from './../singleProject.jsx';

ReactDOM.render((
    <Router>
        <Route component={Wrapper} >
            <Route path="/" component={Home} />
            <Route path="projects" component={Projects} />
            <Route path="projects/:id" component={SingleProject} />
        </Route>
    </Router>
), document.getElementById('app'));

基于传入的 id:

<Route path="projects/:id" component={SingleProject} />

我想获取该值并过滤来自以下位置的数组:

import porgectsCollection from './../data/projectInfo.js';

然后我尝试使用这个功能:

  getProjectId() {
    let projectID = porgectsCollection.filter(el => {
        return (el.title = {this.props.params.id});
    });
  }

显示正确的数据。

我不确定这是否是正确的方法，但是当我运行 webpack 时我也收到错误:

引用 {this.props.params.id} 的意外 token

Answer 1

你不应该需要括号 - 它只是在普通的 JS 函数中:

  getProjectId() {
    let projectID = porgectsCollection.filter(el => {
        return el.title === this.props.params.id;
    });
  }

一些更 Shiny 的格式:

  getProjectId() {
    return porgectsCollection.filter(el => el.title === this.props.params.id);
  }

(您在“项目”中也犯了一个拼写错误，但我让它保持一致)