js的post提交

/**
		 * js的post提交
		 */
		function post(URL, PARAMS) { 
			var temp = document.createElement("form"); 
			temp.action = URL; 
			temp.method = "post"; 
			temp.style.display = "none"; 
			for (var x in PARAMS) { 
			var opt = document.createElement("textarea"); 
			opt.name = x; 
			opt.value = PARAMS[x]; 
			temp.appendChild(opt); 
			} 
			document.body.appendChild(temp); 
			temp.submit(); 
			}