​x
 
<!DOCTYPE html>
<html>
<body>
​
<p>删除注释（在行的开头）以测试每种情况：</p>
​
<p id="demo"></p>
​
<script>
var x;
//x = (0 == "");   // true
//x = (1 == "1");  // true
//x = (1 == true);   // true
//x = (0 === "");  // false
//x = (1 === "1");   // false
//x = (1 === true);  // false
document.getElementById("demo").innerHTML = x;
</script>
​
</body>
</html>
​