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JavaScript面向对象
JavaScript中创建对象的方式
普通创建方式
在js中,属性可以动态添加,也可以动态删除
通过json格式创建对象
json的格式的表现形式
表现形式1

表现形式2

注意:value的取值可以是以下内容

对于以上的结构,那么json的变种就非常丰富
案例1:
var obj=["张三",15,true,
{
"fatherName":"张无忌",
"motherName":"无忌张",
children:["张飞","张亮","张靓颖"]
}
];
alert(typeof obj)
alert(obj[0]);
alert(obj[3]["children"])
案例2:
var obj3= {
"name":"zhangsan",
"age":15,
children:[
{
name:"张一",
age:1
},
{
name:"lisi",
age:10
},
{
name:"wangwu",
age:12
}
],
sayInfo:function(){
console.log(this.name,this.age);
}
};
obj3.sayInfo();
for(var i = 0 ;i
工厂方法创建对象
function createObject(name,age){
var obj = new Object();
obj.name = name ;
obj.age = age
obj.sayHello=sayHello;
return obj ;
}
var sayHello=function(){
console.log(this.name,this.age);
}
var obj1 = createObject("张三",12);
obj1.sayHello();
var obj2 = createObject("李四",20);
obj2.sayHello();
构造函数创建的对象
采用原型创建对象
使用原型+构造函数方式来定义对象,对象之间的属性互不干扰,各个对象间共享同一个方法
优化上面的案例
JavaScript中的继承机制
对象冒充
function Parent(name,age) {
this.name= name ;
this.age = age ;
this.sayInfo = function(){
console.log(this.name,this.age) ;
}
}
function Son(name,age,addr) {
this.method=Parent;
this.method(name,age);
this.addr = addr ;
//将自定义的method方法删除掉
delete this.method;
this.sayInfo=function(){
console.log(this.name,this.age,this.addr) ;
}
}
apply和call方法
function Parent(name,age) {
this.name = name ;
this.age = age ;
this.sayInfo=function(){
console.log(this.name,this.age);
};
}
function Son(name,age,addr) {
//call接受的离散的值,apply的参数为数组
//Parent.call(this,name,age);
Parent.apply(this,new Array(name,age));
this.addr = addr ;
this.sayInfo=function(){
console.log(this.name,this.age,this.addr);
}
}
var s = new Son("张三",15,"北京");
console.log(s)
s.sayInfo();
原型混合方式
基本
文件
流程
错误
SQL
调试
- 请求信息 : 2026-06-04 05:58:37 HTTP/1.1 GET : /article/ggeope.html
- 运行时间 : 3.7142s ( Load:0.0065s Init:3.0283s Exec:0.6702s Template:0.0092s )
- 吞吐率 : 0.27req/s
- 内存开销 : 2,232.59 kb
- 查询信息 : 12 queries 5 writes
- 文件加载 : 36
- 缓存信息 : 0 gets 0 writes
- 配置加载 : 130
- 会话信息 : SESSION_ID=l82u5lestjbvgj0ki5661pctf6
- /www/wwwroot/tsicrk.com/index.php ( 1.09 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/ThinkPHP.php ( 4.61 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Think.class.php ( 12.26 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Storage.class.php ( 1.37 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Storage/Driver/File.class.php ( 3.52 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Mode/common.php ( 2.82 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Common/functions.php ( 53.56 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Hook.class.php ( 4.01 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/App.class.php ( 13.49 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Dispatcher.class.php ( 14.79 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Route.class.php ( 13.36 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Controller.class.php ( 11.23 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/View.class.php ( 7.59 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/BuildLiteBehavior.class.php ( 3.68 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ParseTemplateBehavior.class.php ( 3.88 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ContentReplaceBehavior.class.php ( 1.91 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Conf/convention.php ( 11.15 KB )
- /www/wwwroot/tsicrk.com/App/Common/Conf/config.php ( 2.14 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Lang/zh-cn.php ( 2.55 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Conf/debug.php ( 1.49 KB )
- /www/wwwroot/tsicrk.com/App/Home/Conf/config.php ( 0.31 KB )
- /www/wwwroot/tsicrk.com/App/Home/Common/function.php ( 3.33 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ReadHtmlCacheBehavior.class.php ( 5.62 KB )
- /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php ( 6.02 KB )
- /www/wwwroot/tsicrk.com/App/Home/Controller/CommController.class.php ( 1.60 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Model.class.php ( 60.11 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php ( 32.43 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db/Driver/Pdo.class.php ( 16.74 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Cache.class.php ( 3.83 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Cache/Driver/File.class.php ( 5.87 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template.class.php ( 28.16 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template/TagLib/Cx.class.php ( 22.40 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Template/TagLib.class.php ( 9.16 KB )
- /www/wwwroot/tsicrk.com/App/Runtime/Cache/Home/7540f392f42b28b481b30614275e4e55.php ( 17.71 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/WriteHtmlCacheBehavior.class.php ( 0.97 KB )
- /www/wwwroot/tsicrk.com/ThinkPHP/Library/Behavior/ShowPageTraceBehavior.class.php ( 5.24 KB )
- [ app_init ] --START--
- Run Behavior\BuildLiteBehavior [ RunTime:0.000005s ]
- [ app_init ] --END-- [ RunTime:0.000027s ]
- [ app_begin ] --START--
- Run Behavior\ReadHtmlCacheBehavior [ RunTime:0.000305s ]
- [ app_begin ] --END-- [ RunTime:0.000329s ]
- [ view_parse ] --START--
- [ template_filter ] --START--
- Run Behavior\ContentReplaceBehavior [ RunTime:0.000057s ]
- [ template_filter ] --END-- [ RunTime:0.000079s ]
- Run Behavior\ParseTemplateBehavior [ RunTime:0.006298s ]
- [ view_parse ] --END-- [ RunTime:0.006323s ]
- [ view_filter ] --START--
- Run Behavior\WriteHtmlCacheBehavior [ RunTime:0.000195s ]
- [ view_filter ] --END-- [ RunTime:0.000210s ]
- [ app_end ] --START--
- 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`pid`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
- 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') LIMIT 1' at line 1
[ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( id= ) LIMIT 1
- 1064:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
[ SQL语句 ] : SELECT `id`,`navname` FROM `cx_nav` WHERE ( pid= )
- [8] Undefined index: pid /www/wwwroot/tsicrk.com/App/Home/Controller/ArticleController.class.php 第 47 行.
- [8] Undefined index: db_host /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 120 行.
- [8] Undefined index: db_port /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 121 行.
- [8] Undefined index: db_name /www/wwwroot/tsicrk.com/ThinkPHP/Library/Think/Db.class.php 第 122 行.

3.7142s
