输入内容

接口返回内容

<script>
	function callAPI() {
		var input = document.getElementById("input").value;
		var xhr = new XMLHttpRequest();
		xhr.open("GET", "http://example.com/api?input=" + input, true);
		xhr.onreadystatechange = function() {
			if (this.readyState === XMLHttpRequest.DONE && this.status === 200) {
				document.getElementById("output").innerHTML += "<p>" + this.responseText + "</p>";
			}
		}
		xhr.send();
	}
</script>