從回應中擷取json物件
當您將Headless最適化表單提交至自訂提交處理常式時，可擷取提交處理常式傳回的資料，並將其顯示在您的react應用程式中。 下列程式碼片段顯示
// associate event handler for the onSubmitSuccess event
<AdaptiveForm mappings={extendMappings} onSubmitSuccess={onSuccess} formJson={selectedForm}/>
// extract the json returned by the custom submit service
const onSuccess=(action) =>{
let body = action.payload?.body;
let FirstName = JSON.parse(body.metadata.json).firstName;
setThankYouMessage(FirstName+" your request has been received");
}
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