打印object对象

function obj2string(o) {
		var r = [];
		if (typeof o == "string") {
			return "\""
					+ o.replace(/([\‘\"\\])/g, "\\$1").replace(/(\n)/g, "\\n")
							.replace(/(\r)/g, "\\r").replace(/(\t)/g, "\\t")
					+ "\"";
		}
		if (typeof o == "object") {
			if (!o.sort) {
				for ( var i in o) {
					r.push(i + ":" + obj2string(o[i]));
				}
				if (!!document.all
						&& !/^\n?function\s*toString\(\)\s*\{\n?\s*\[native code\]\n?\s*\}\n?\s*$/
								.test(o.toString)) {
					r.push("toString:" + o.toString.toString());
				}
				r = "{" + r.join() + "}";
			} else {
				for (var i = 0; i < o.length; i++) {
					r.push(obj2string(o[i]))
				}
				r = "[" + r.join() + "]";
			}
			return r;
		}
		return o.toString();
	}
	function test() {
		var obj=new Object();
		obj.name="测试";
		obj.age="20";
		obj.sex="男";
		alert(obj+"###"+obj2string(obj));
	}
	test();