delete动态删除js对象属性

var objtest = {
    prop: \'delete me\'
};
//或者这么声明的对象
var objtest = new Array();
objtest[\'prop\'] = \'delete me\';
//删除属性\'prop\'：
delete objtest.prop;
//或者
delete objtest[\'prop\'];

//还可以删除任意变量
var numb = 17;
delete numb;

 

原文出处：http://hi.baidu.com/cnkarl/blog/item/d9e261c5735d0ca18326ac7a.html

其他参考：http://tech.idv2.com/2008/01/09/javascript-variables-and-delete-operator/