标签：com http class blog style div img code java size javascript
1 <html> 2 3 <head> 4 5 <meta http-equiv="content-type" charset="utf-8"/> 6 7 <script type="text/javascript"> 8 9 alert(typeof(void(0))); //void(0) 计算值为0，由于忽略返回值，typeof类型为：undefined 10 11 </script> 12 13 </head> 14 15 <body> 16 17 1.用onclick事件来灵活处理；2.void(expression)<br> 18 19 <a href="javascript:void(0);" onclick="location.href=‘http://www.baidu.com‘;">百度</a> 20 21 <a href="javascript:void(location.href=‘http://www.google.com‘)">谷歌</a> 22 23 </body> 24 25 </html>
由于运算符优先级,void 1+2 的运算过程为：
void（1+2）的计算过程为：
1.只删除实列属性，而不会删除对象
1 <html> 2 <head> 3 <meta http-equiv="content-type" charset="utf-8"/> 4 <script type="text/javascript"> 5 var parent={}; 6 var son={age:10}; 7 parent.son=son; 8 alert(parent.son.age);//10 9 delete parent.son; 10 alert(parent.son);//undefined 11 alert(son.age);//10 12 </script> 13 </head> 14 <body> 15 </body> 16 </html>
Ps：未完带补充....
标签：com http class blog style div img code java size javascript
原文地址：http://www.cnblogs.com/oxf5deb3/p/3698312.html
