Rising Sun

／／摘自http://bbs.51js.com

<SCRIPT LANGUAGE="JavaScript">
<!--
function Base( v_sBaseName )
{
 this.BaseName = v_sBaseName
 this.BaseMethod = BaseMethod;
 function BaseMethod( v_sStr )
 {
  alert("BaseName: " + this.BaseName + "\n" + "ExtendStr: " + v_sStr);
 }
}

function Son( v_sName )
{
 this.Name = v_sName
 this.BaseName = this.Name;
 this.Method = Method;
 function Method( v_sStr )
 {
  alert("Name: " + this.Name + "\n" + "ExtendStr: " + v_sStr);
 }
}

Son.prototype = new Base();

var O = new Son("初始化字串")

O.Method("Method附加字串");
O.BaseMethod("BaseMethod附加字串");
//-->
</SCRIPT>



SCRIPT LANGUAGE="JavaScript">
<!--
function Base( v_sBaseName )
{
 this.BaseName = v_sBaseName
 this.BaseMethod = BaseMethod;
 function BaseMethod( v_sStr )
 {
  alert("BaseName: " + this.BaseName + "\n" + "ExtendStr: " + v_sStr);
 }
}

function Son( v_sName )
{
 Base.call(this, v_sName)
 this.Name = v_sName
 this.Method = Method;
 function Method( v_sStr )
 {
  alert("Name: " + this.Name + "\n" + "ExtendStr: " + v_sStr);
 }
}

var O = new Son("初始化字串")

O.Method("Method附加字串");
O.BaseMethod("BaseMethod附加字串");
//-->
</SCRIPT>



<SCRIPT LANGUAGE="JavaScript">
<!--
function Base( v_sBaseName )
{
        this.BaseName = v_sBaseName
        this.BaseMethod = BaseMethod;
        function BaseMethod( v_sStr )
        {
                alert("BaseName: " + this.BaseName + "\n" + "ExtendStr: " + v_sStr);
        }
}

function Son( v_sName )
{
        Base.call(this, v_sName)
        this.base = new Base(v_sName)   //建立一個基對象實例以便重載後可以調用基對象的函數
        this.Name = v_sName
        this.Method = Method;
        function Method( v_sStr )
        {
                alert("Name: " + this.Name + "\n" + "ExtendStr: " + v_sStr);
        }
        this.BaseMethod = BaseMethod;
        function BaseMethod( v_sStr )
        {
                alert("Override BaseName: " + this.BaseName + "\n" + "Override ExtendStr: " + v_sStr);
        }
}

var O = new Son("初始化字串")

O.Method("Method附加字串");
O.BaseMethod("重載後的BaseMethod附加字串");
O.base.BaseMethod("BaseMethod附加字串");
//-->
</SCRIPT>




<script>
String.prototype.defaultText="这是String对象的默认值，也是一个静态属性";

var sss=new String();

alert(sss.defaultText);//任何字符传都有这个属性了

alert("所有的字符串都会有defaultText这个默认值属性:"+"所有的字符串都会有defaultText这个默认值属性".defaultText)

function b()
{
alert(String.prototype.defaultText);
b1.style.display="block";
}

function a()
{
delete String.prototype.defaultText;

}

</script>
<button onclick="b()">显示String对象的defaultText属性</button>
<button id=b1 style="display:none" onclick="a()">删掉String对象的defaultText属性</button>