Ajax 간단한 예제소스

	var request = null;
	function createRequest() {
		try {
			request = new XMLHttpRequest();
		} catch (trymicrosoft) {
			try {
				request = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (othermicrosoft) {
				try {
					request = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (failed) {
					request = null;
				}
			}
		}

		if (request == null) {
			alert("너가 사용하는 브라우저는 도대체 뭐냐..??");
		}
	}

	function getBoardsSold() {
		createRequest()
		var content = document.getElementById("content");
		var contentStr = getText(content);
		var url = "test.php?ContentStr=" + contentStr;

		request.open("GET", url, true);
		request.onreadystatechange = updatePage;
		request.send(null);
	}

	function updatePage() {
		if (request.readyState == 4) {
			if(request.status == 200) {
				var newContent = request.responseText;
				var contenttStr = document.getElementById("Content");
				replaceText(contentStr, newContent);
			} else {
				alert("서버에러!!");
			}
		}
	}

	function replaceText(el, text) {
		if (el != null)	{
			clearText(el);
			var newNode = document.createTextNode(text);
			el.appendChild(newNode);
		}
	}

	function clearText(el) {
		if (el != null) {
			if (el.childNodes) {
				for (var i = 0; i < el.childNodes.length; i++) {
					var childNode = el.childNodes[i];
					el.removeChild(childNode);
				}
			}
		}
	}

	function getText(el) {
		var text = "";
		if (el != null) {
			if (el.childNodes) {
				for (var i = 0; i < el.childNodes.length; i++) {
					var childNode = el.childNodes[i];
					if (childNode.nodeValue != null) {
						text = text + childNode.nodeValue;
					}
				}
			}
		}
		return text;
	}