React修改两种种类型的state值:list、object

 

修改list类型的state

方式一:

通过list的concat方法,如下

  let newList = this.state.selectedApiDetailList.concat(response.data)
  this.setState({selectedApiDetailList: newList})

方式二:

新增一个数组,将原来的数组与新的值加入数组

let newList = [...this.state.selectedApiDetailList, response.data]
this.setState({selectedApiDetailList: newList})

 

修改object类型的state

方式一、Object.assign

let newHeaders = Object.assign({}, this.state.headers, {accessId: res.accessId});
this.setState({headers: newHeaders})

 

将List赋值给另外一个List

let a =["新增员工模块", "已有bug", "提交课程", "新增用户"]
let b =[...a]

 

将Object赋值给另外一个Object

let tag = Object.assign({},this.state.tag)

 

posted @ 2020-07-20 11:42  小橙籽  阅读(1638)  评论(0编辑  收藏  举报