我正在尝试为我的开关盒寻找任何替代方案，因为它很长
我有嵌套的开关盒，看起来像这样
switch (currentTab) {
case pending:
switch (status) {
case approved:
case denied:
break;
case partialApproved:
finalUpdatedInvoiceAmount = updatedInvoiceAmount - (feeAmount - (approvedFeeAmount || 0));
break;
}
break;
case approved:
switch (status) {
case denied:
case partialApproved:
finalUpdatedInvoiceAmount = updatedInvoiceAmount - (feeAmount - (approvedFeeAmount || 0));
break;
}
break;
case denied:
switch (status) {
case approved:
case partialApproved:
finalUpdatedInvoiceAmount = oldApprovedFeeAmount ? updatedInvoiceAmount + (feeAmount - oldApprovedFeeAmount) : updatedInvoiceAmount - (feeAmount - (approvedFeeAmount || 0));
break;
}
break;
case partiallyApprovedTab:
switch (status) {
case approved:
case denied:
case partialApproved:
finalUpdatedInvoiceAmount = oldApprovedFeeAmount ? updatedInvoiceAmount + (feeAmount - oldApprovedFeeAmount) : updatedInvoiceAmount - (feeAmount - (approvedFeeAmount || 0));
break;
}
break;
}
这是另一种可能性吗？
由于代码非常庞大，以后可能会出现其他情况。
也许你可以尝试 handlerMap：
const handler1 = () => { finalUpdatedInvoiceAmount = updatedInvoiceAmount - (feeAmount - (approvedFeeAmount || 0)); }
const handler2 = () => { finalUpdatedInvoiceAmount = oldApprovedFeeAmount ? updatedInvoiceAmount + (feeAmount - oldApprovedFeeAmount) : updatedInvoiceAmount - (feeAmount - (approvedFeeAmount || 0)); }
const handlerMap = {
[pending]: {
[partialApproved]: handler1
},
[approved]: {
[denied]: handler1,
[partialApproved]: handler1,
},
[denied]: {
[approved]: handler2,
[partialApproved]: handler2,
},
[partiallyApprovedTab]: {
[approved]: handler2,
[denied]: handler2,
[partialApproved]: handler2,
}
}
handlerMap[currentTab] && handlerMap[currentTab][status] && handlerMap[currentTab][status]()
// handlerMap[currentTab]?.[status]?.()
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