摘要：代码：<script type="text/javascript"> function classAA() { this.a = function () { alert(); }; } function classBB() { this.b = function () { alert(); }; } classBB.propertyIsEnumerable = new classAA(); var objB1 = new classBB(); var objB2 = new classBB(); alert(objB1.a == objB2.a); alert( 阅读全文