将参数传递给 async / await 函数 returns "undefined"
Passing argument to async / await function returns "undefined"
将数据发布到 API 并获得响应时,如果我在获取调用(正文:“XYZ12345”)中硬编码正文数据,它工作正常,这是一个示例:
const vatValidationRequest =
fetch(
'/api/vies/validateVAT.php', {
method: 'POST',
body: "XYZ12345",
headers: {
'Content-Type': 'application/text'
}
})
.then((response) => response.text())
.then((responseText) => {
return responseText;
});
const validateVAT = async () => {
const viesResponse = await vatValidationRequest;
console.log(viesResponse);
};
validateVAT();
但是,如果我尝试将正文数据作为参数传递(正文:vatNumber),validateVAT() 函数 returns“未定义”。这是不起作用的:
const vatValidationRequest = (vatNumber) => {
fetch(
'/api/vies/validateVAT.php', {
method: 'POST',
body: vatNumber,
headers: {
'Content-Type': 'application/text'
}
})
.then((response) => response.text())
.then((responseText) => {
return responseText;
});
}
const validateVAT = async (vatNumber) => {
const viesResponse = await vatValidationRequest(vatNumber);
console.log(viesResponse);
};
validateVAT("XYZ12345");
关于如何将参数传递给异步函数的任何线索?谢谢!
问题是您没有从该方法返回响应。你应该这样做:
const vatValidationRequest = (vatNumber) => {
return fetch(
'/api/vies/validateVAT.php', {
method: 'POST',
body: vatNumber,
headers: {
'Content-Type': 'application/text'
}
})
.then((response) => response.text())
.then((responseText) => {
return responseText;
});
}
const validateVAT = async (vatNumber) => {
const viesResponse = await vatValidationRequest(vatNumber);
console.log(viesResponse);
};
validateVAT("XYZ12345");
将数据发布到 API 并获得响应时,如果我在获取调用(正文:“XYZ12345”)中硬编码正文数据,它工作正常,这是一个示例:
const vatValidationRequest =
fetch(
'/api/vies/validateVAT.php', {
method: 'POST',
body: "XYZ12345",
headers: {
'Content-Type': 'application/text'
}
})
.then((response) => response.text())
.then((responseText) => {
return responseText;
});
const validateVAT = async () => {
const viesResponse = await vatValidationRequest;
console.log(viesResponse);
};
validateVAT();
但是,如果我尝试将正文数据作为参数传递(正文:vatNumber),validateVAT() 函数 returns“未定义”。这是不起作用的:
const vatValidationRequest = (vatNumber) => {
fetch(
'/api/vies/validateVAT.php', {
method: 'POST',
body: vatNumber,
headers: {
'Content-Type': 'application/text'
}
})
.then((response) => response.text())
.then((responseText) => {
return responseText;
});
}
const validateVAT = async (vatNumber) => {
const viesResponse = await vatValidationRequest(vatNumber);
console.log(viesResponse);
};
validateVAT("XYZ12345");
关于如何将参数传递给异步函数的任何线索?谢谢!
问题是您没有从该方法返回响应。你应该这样做:
const vatValidationRequest = (vatNumber) => {
return fetch(
'/api/vies/validateVAT.php', {
method: 'POST',
body: vatNumber,
headers: {
'Content-Type': 'application/text'
}
})
.then((response) => response.text())
.then((responseText) => {
return responseText;
});
}
const validateVAT = async (vatNumber) => {
const viesResponse = await vatValidationRequest(vatNumber);
console.log(viesResponse);
};
validateVAT("XYZ12345");