Javascript Chrome中重复获取URL的代码片段不'；行不通

我可以在Chrome控制台中使用此代码向我的

localhost

上的URL发出post请求：

fetch("http://localhost:50014/api/myapi/", {"credentials":"omit","headers":{"accept":"*/*","accept-language":"en-GB,en-US;q=0.9,en;q=0.8","cache-control":"no-cache","content-type":"application/json","pragma":"no-cache","sec-fetch-mode":"cors","sec-fetch-site":"cross-site","x-api-key":"abc123"},"referrerPolicy":"no-referrer","body":"{\"nodeIds\":[\"ABC123\"]}","method":"POST","mode":"cors"});

我将此代码用作开发人员工具中的Chrome“代码片段”，尝试重复发出post请求，用于某些测试目的，其中我尝试识别错误：

while(1==1) {
fetch("http://localhost:50014/api/myapi/", {"credentials":"omit","headers":{"accept":"*/*","accept-language":"en-GB,en-US;q=0.9,en;q=0.8","cache-control":"no-cache","content-type":"application/json","pragma":"no-cache","sec-fetch-mode":"cors","sec-fetch-site":"cross-site","x-api-key":"abc123"},"referrerPolicy":"no-referrer","body":"{\"nodeIds\":[\"ABC123\"]}","method":"POST","mode":"cors"});
setTimeout(() => {  console.log("waiting"); }, 1000);
}

但我从未看到POST请求生效，控制台中也没有任何内容。为什么?

更新

谢谢@Jaromanda X。我更新了这个，但它仍然没有运行。为什么?

while(1==1){
  callApi();
  sleep(5000);
}

function callApi() {
    fetch("http://localhost:50014/api/myapi/", {"credentials":"omit","headers":{"accept":"*/*","accept-language":"en-GB,en-US;q=0.9,en;q=0.8","cache-control":"no-cache","content-type":"application/json","pragma":"no-cache","sec-fetch-mode":"cors","sec-fetch-site":"cross-site","x-api-key":"abc123"},"referrerPolicy":"no-referrer","body":"{\"nodeIds\":[\"ABC123\"]}","method":"POST","mode":"cors"});
}

function sleep(milliseconds) {
   var currentTime = new Date().getTime();

   while (currentTime + milliseconds >= new Date().getTime()) {
   }
}

---

如果您想在一段时间后重复发出请求，可以使用setInterval，如下所示：

setInterval(()=>{

fetch("http://localhost:50014/api/myapi/", {"credentials":"omit","headers":{"accept":"*/*","accept-language":"en-GB,en-US;q=0.9,en;q=0.8","cache-control":"no-cache","content-type":"application/json","pragma":"no-cache","sec-fetch-mode":"cors","sec-fetch-site":"cross-site","x-api-key":"abc123"},"referrerPolicy":"no-referrer","body":"{\"nodeIds\":[\"ABC123\"]}","method":"POST","mode":"cors"});

},5000)

---

您的while循环在一个紧密的循环中发送数千个请求-没有等待，因为setTimeout不是这样工作的-最终，您的浏览器应该警告您，有javascript导致页面无响应-如果没有，请使用现代浏览器