JavaScript继承方式实例_javascript技巧
May 16, 2016 pm 06:17 PM
复制代码 代码如下:
function parent(){
this.x=10;
}
function child(){
var parentObj=new parent();
for(var p in parentObj)this[p]=parentObj[p];
}
var childObj=new child();
alert(childObj.x);
复制代码 代码如下:
function parent(){
this.x=10;
}
function child(){
this.parent=parent;
this.parent();
delete this.parent;
}
var childObj=new child();
alert(childObj.x);
复制代码 代码如下:
function parent(){
this.x=10;
}
function child(){
parent.call(this);
}
var childObj=new child();
alert(childObj.x);
原型抄写
复制代码 代码如下:
function parent(){
}
parent.prototype.x=1;
function child(){
}
for(var p in parent.prototype)child.prototype[p]=parent.prototype[p];
child.prototype.y=2;
var childObj=new child();
alert(childObj.x);
复制代码 代码如下:
function parent(string){
var child=new Function("this.x=10;"+string);
return child;
}
var child=new parent("this.y=20;");
var childObj=new child();
alert(childObj.y);
复制代码 代码如下:
function parent(){
this.x=10;
}
function child(){
}
child.prototype=new parent();
var childObj=new child();
alert(childObj.x);
复制代码 代码如下:
function parent(){
this.x=10;
}
function child(){
var ret=new parent();
ret.y=20;
return ret;
}
var childObj=new child();
alert(childObj.x);
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article
How Long Does It Take To Beat Split Fiction?
3 weeks ago
By DDD
Repo: How To Revive Teammates
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
1 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌

Hot tools Tags

Hot Article
How Long Does It Take To Beat Split Fiction?
3 weeks ago
By DDD
Repo: How To Revive Teammates
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
1 weeks ago
By 尊渡假赌尊渡假赌尊渡假赌

Hot Article Tags

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Replace String Characters in JavaScript

Custom Google Search API Setup Tutorial

8 Stunning jQuery Page Layout Plugins
