LeavingMe's Tech Blog

摘要： 写出运行结果，说明理由。<script type="text/javascript">function test(num) { this.m_num = 5; var func1 = function() { alert(num); alert(this.m_num); } this.func2 = function() { func1(); } this.func3 = func1;}new test(1).func2();new test(1).func3();</script>运行结果：1undefined15点击查看DemoHTTP 缓存ht 阅读全文