Javascript ReactJS循环对象的状态数组并添加新字段

我正在学习reactjs，得到了一个json对象数组。我想循环遍历数组中的每条记录，读取id，并用字符串值添加/设置一个新字段。循环完成后，我将设置状态以保存状态集合。到目前为止，还没有成功

非常感谢您的帮助

const records = this.state.OriginalRecords
let record = {}
records.map(m => (function(m) {
    // get the record for each record to update
    record = this.state.OriginalRecords.find(record => record.id === m.id)
    // add and set the record new field
    record['newField'] = 'Test'
  }
))

this.setState({OriginalRecords: records, mappingDateDone: true})

我的目标是OrginalRecords中的每个记录都有一个名为newField='Test'的新json字段

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谢谢

只需使用map函数像这样做

const records = this.state.OriginalRecords

const newRecords = records.map(item =>  {
    return {...item , newField : 'Test'}
}); 

this.setState({OriginalRecords: newRecords, mappingDateDone: true})

const records = this.state.OriginalRecords

const newRecords = records.map(item =>  {
    return {...item , newField : 'Test'}
}); 

this.setState({OriginalRecords: newRecords, mappingDateDone: true})