test.html

<html>
<head>
<script type="text/javascript">
var NUM = 16;
function getGYanzheng(x){
	var a = new Array(NUM);
	var p = new Array(NUM);
	var temp;
	if(x.length != NUM-2){
		return false;
	}
	for(var i= 0; i < x.length; i++){
		if(isNaN(x.charAt(i))){
			return false;
		}else{
			a[i+1] = parseInt(x.charAt(i));
		}
	}
	p[1] = 10
	for(var i = 2; i < NUM; i++){
		temp = (p[i-1]+a[i-1])%10;
		if(temp == 0){
			p[i] = (10*2)%11;
		}else{
			p[i] = temp*2 %11;
		}
	}
	return (11 - p[NUM-1])%10;
}

console.log(getGYanzheng("220103600216890"));
$(document).ready(function(){
$("#button").click(function(){
var value = $("#num").attr("value");
$(".output").html(getGYanzheng(value));
});
});

	</script>
</head>
<body>

</body>
</html>