使用 http-server . -c-1 启动

fuck

{
  "word":"fuck you"
}

index.html

<title>JS Bin</title>
<button id=x>click me</button>
<div id="output" style="border: 1px solid red">

</div>
<script>
  x.onclick = function(){
    var request = new XMLHttpRequest()
    request.open('GET', '/fuck')
    request.setRequestHeader('Accept', 'text/html')
    request.onreadystatechange = function(){
      if(request.readyState === 4){
        console.log(request.status)
        console.log(request.statusText)
        console.log(request.getAllResponseHeaders())
        var object = JSON.parse(request.responseText)
        output.innerText = object.word
      }
    }

    request.send('sadlkjasd;lksajd')
  }
</script>