
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>演示JS中关系运算的细节</title>
</head>
<body>
<script type="text/javascript">
var str = "55";
var num = 55;
alert(str == num); //true
alert(str === num); //false
alert(str.equals(num)); //报错
</script>
</body>
</html>



