<html><body><p>切勿将布尔值创建为对象。</p><p>不能安全地比较布尔值和对象。</p><p id="demo"></p><script>var x = false; // x is a booleanvar y = new Boolean(false); // y is an objectdocument.getElementById("demo").innerHTML = (x==y);</script></body></html>