JS 常用方法汇总

一、数组转字符串

	var a = [a,b,c,d,e]
	c = a.join(','); //a,b,c,d,e

二、字符串转数组

	var a = a,b,c,d,e
	 b = a.split(''); //[a, b, c, d, e]

三、sessionStorage 存储 获取 删除

   sessionStorage.setItem('userRoles', JSON.stringify(userRoles));  //存储
   userRoles = JSON.parse(sessionStorage.getItem('userRoles'));          //获取
   window.sessionStorage.removeItem("userRoles")                                 //删除

四、angular 路由跳转携带参数获取

	1.<a [routerLink]="['./publishtask',{taskID: data.recordd}]">编辑</a>  
      获取参数  ------ this.ActivatedRoute.params.forEach((params: Params) => { this.taskID = params['taskID'];});
     
     2.this.router.navigate(['./academicindex'], { queryParams: { taskID: taskID } });
      获取参数  ------this.ActivatedRoute.queryParams.subscribe((params: Params) => {this.taskID = params['taskID'];  });