React获取url后面参数的值示例代码

export function getUrlToken(name, str) {
		     const reg = new RegExp(`(^|&)${ name}=([^&]*)(&|$)`);
		     const r = str.substr(1).match(reg);
		     if (r != null) return  decodeURIComponent(r[2]); return null;
		}

import { getUrlToken } from '写你建立公共方法的地址';

		//  结果测试
		constructor(peops){
			super(peops);
			const token = getUrlToken ('token',peops.location.search);
			console.log(token );
		}

以地址  localhost:3000/app/knowledgeManagement/modify/STY20171011124209535/3/1507701970070/0/?s=1&f=7  为例

其中各个参数定义对应如下：

localhost:3000/app/knowledgeManagement/modify/:studyNo/:stepId/:randomNum/:isDefault/?s=&f=

// localhost:3000/app/knowledgeManagement/modify/STY20171011124209535/3/1507701970070/0/?s=1&f=7
// localhost:3000/app/knowledgeManagement/modify/:studyNo/:stepId/:randomNum/:isDefault/?s=1&f=7

// 获取 studyNo
this.props.match.match.params.studyNo // STY20171011124209535

// 获取 stepId
this.props.match.match.params.stepId // 3

// 获取 success
const query = this.props.match.location.search // '?s=1&f=7'
const arr = query.split('&') // ['?s=', 'f=7']
const successCount = arr[0].substr(3) // '1'
const failedCount = arr[1].substr(2) // '7'