JS 动态删除对象属性

JS中动态删除，用关键字delete

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;