嘗試遍歷內部 object 並根據條件更改值

Question

下面是我試圖根據一些值修改的 object 結構

export const PROJECT_PHASE = Object.freeze({
  CONCEPT: { label: 'Concept', stepNumber: 0, disabled: false, description: '' },
  SCHEMATIC: { label: 'Schematic', stepNumber: 1, disabled: false, description: '' },
  DESIGN_DEVELOPMENT: {
    label: 'Design Development',
    stepNumber: 2,
    disabled: false,
    description: ''
  },
  CONSTRUCTION_DOCUMENTS: {
    label: 'Construction Documents',
    stepNumber: 3,
    disabled: false,
    description: ''
  }
 });

我正在根據條件修改description值並嘗試返回相同的 object 結構，但無法通過此操作並獲得類似於 If 語句中expression expected的錯誤。

Object.entries(PROJECT_PHASE).forEach(([key,value]) => (
    if(value.stepNumber === currentStepNumber){
      value.description = 'Current';
    }
  ));

任何人都可以幫助解決這個問題，我怎樣才能修改內部 object？ 非常感謝 ！！！！

Answer 1

您會看到該錯誤，因為在您的 forEach 中您使用的是()而不是{}

 PROJECT_PHASE=Object.freeze({ CONCEPT: { label: 'Concept', stepNumber: 0, disabled: false, description: '' }, SCHEMATIC: { label: 'Schematic', stepNumber: 1, disabled: false, description: '' }, DESIGN_DEVELOPMENT: { label: 'Design Development', stepNumber: 2, disabled: false, description: '' }, CONSTRUCTION_DOCUMENTS: { label: 'Construction Documents', stepNumber: 3, disabled: false, description: '' } }); currentStepNumber=3 Object.entries(PROJECT_PHASE).forEach(([key,value]) => { if(value.stepNumber === currentStepNumber){ value.description = 'Current'; } }); console.log(PROJECT_PHASE)

Answer 2

 const PROJECT_PHASE = Object.freeze({ CONCEPT: { label: 'Concept', stepNumber: 0, disabled: false, description: '' }, SCHEMATIC: { label: 'Schematic', stepNumber: 1, disabled: false, description: '' }, DESIGN_DEVELOPMENT: { label: 'Design Development', stepNumber: 2, disabled: false, description: '' }, CONSTRUCTION_DOCUMENTS: { label: 'Construction Documents', stepNumber: 3, disabled: false, description: '' } }); const currentStepNumber = 2; const alteredEntries = Object.entries(PROJECT_PHASE).map(([key,value]) => { let newValue = value; if(value.stepNumber === currentStepNumber){ newValue.description = 'Current'; } return [key,newValue] }); const alteredObject = Object.fromEntries(alteredEntries); console.log(alteredObject);

這將創建根據需要修改的PROJECT_PHASE object 的副本。 注意使用map而不是forEach並將結果輸入Object.fromEntries

Answer 3

你cab用這種方式，你的代碼有錯誤。 我在這里使用 currentStepNumber 是 3

  Object.entries(PROJECT_PHASE).forEach(([key,value]) => {
    if(value.stepNumber === 3){
      value.description = 'Current';
    }
  });