javascript的函数调用继承实现
看到一篇入门的JS继承文章,转载下
原地址:http://sdcyst.javaeye.com/blog/288813
类变量/类方法/实例变量/实例方法
先补充一下以前写过的方法:
在javascript中,所有的方法都有一个call方法和apply方法.这两个方法可以模拟对象调用方法.它的第一个参数是对象,后面的
参数表示对象调用这个方法时的参数(ECMAScript specifies two methods that are defined for all functions, call()
and apply(). These methods allow you to invoke a function as if it were a method of some other object. The first
argument to both call() and apply() is the object on which the function is to be invoked; this argument becomes
the value of the this keyword within the body of the function. Any remaining arguments to call() are the values
that are passed to the function that is invoked).比如我们定义了一个方法f(),然后调用下面的语句:
f.call(o, 1, 2);
作用就相当于
o.m = f;
o.m(1,2);
delete o.m;
举个例子:
Js代码 < type="application/x-shockwave-flash" width="14" height="15" src="http://www.javaeye.com/javascripts/syntaxhighlighter/clipboard_new.swf" src="http://www.javaeye.com/javascripts/syntaxhighlighter/clipboard_new.swf" flashvars="clipboard=function%20Person(name%2Cage)%20%7B%20%20%2F%2F%E5%AE%9A%E4%B9%89%E6%96%B9%E6%B3%95%0A%20%20%20%20this.name%20%3D%20name%3B%0A%20%20%20%20this.age%20%3D%20age%3B%0A%7D%0Avar%20o%20%3D%20new%20Object()%3B%20%20%20%2F%2F%E7%A9%BA%E5%AF%B9%E8%B1%A1%0Aalert(o.name%20%2B%20%22_%22%20%2B%20o.age)%3B%20%2F%2Fundefined_undefined%0A%0APerson.call(o%2C%22sdcyst%22%2C18)%3B%20%2F%2F%E7%9B%B8%E5%BD%93%E4%BA%8E%E8%B0%83%E7%94%A8%3Ao.Person(%22sdcyst%22%2C18)%0Aalert(o.name%20%2B%20%22_%22%20%2B%20o.age)%3B%20%2F%2Fsdcyst_18%0A%0APerson.apply(o%2C%5B%22name%22%2C89%5D)%3B%2F%2Fapply%E6%96%B9%E6%B3%95%E4%BD%9C%E7%94%A8%E5%90%8Ccall%2C%E4%B8%8D%E5%90%8C%E4%B9%8B%E5%A4%84%E5%9C%A8%E4%BA%8E%E4%BC%A0%E9%80%92%E5%8F%82%E6%95%B0%E7%9A%84%E5%BD%A2%E5%BC%8F%E6%98%AF%E7%94%A8%E6%95%B0%E7%BB%84%E6%9D%A5%E4%BC%A0%E9%80%92%0Aalert(o.name%20%2B%20%22_%22%20%2B%20o.age)%3B%20%2F%2Fname_89" qua
相关文档：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
&nb ......
请先看下题：
if(true)
{
a = 1;
}
alert(a); //输出啥？
if(true)
{
var a = 1;
}
alert(a); //这又输出什么？
在firefox3.5下，第一个输出1;第二个输出undefined！！！
为啥呢？呵呵，本人在此班门弄斧一下：
一般情况下缺省var声明时，默� ......
AS("#...").keypress(function(event) {
if (navigator.userAgent.toLowerCase().indexOf("mozilla") >= 0) {
var $key = event.charCode ;
} else {
var $key = event. ......
C#代码与javaScript函数的相互调用
问：
1.如何在JavaScript访问C#函数?
2.如何在JavaScript访问C#变量?
3.如何在C#中访问JavaScript的已有变量?
4.如何在C#中访问JavaScript函数?
问题1答案如下：
javaScript函数中执行C#代码中的函数：
方法一：1、首先建立一个按 ......
