js create an object

   
   
   
   

    
    
    
    
<span class="string">"text/javascript"</span><span>>  </span></span></li>
    
    
    
    <li><span>    </span><span class="keyword">function</span><span> createObject(name)  </span></li>
    
    
    
    <li class="alt"><span>    {  </span></li>
    
    
    
    <li><span>        </span><span class="keyword">var</span><span> object = </span><span class="keyword">new</span><span> Object();  </span></li>
    
    
    
    <li class="alt"><span>          </span></li>
    
    
    
    <li><span>        object.name = name;  </span></li>
    
    
    
    <li class="alt"><span>          </span></li>
    
    
    
    <li><span>        object.setName = </span><span class="keyword">function</span><span>(name){  </span></li>
    
    
    
    <li class="alt"><span>            object.name = name;  </span></li>
    
    
    
    <li><span>        }  </span></li>
    
    
    
    <li class="alt"><span>          </span></li>
    
    
    
    <li><span>        </span><span class="keyword">return</span><span> object;  </span></li>
    
    
    
    <li class="alt"><span>    }  </span></li>
    
    
    
    <li><span>      </span></li>
    
    
    
    <li class="alt"><span>    </span><span class="keyword">var</span><span> obj1 = createObject(</span><span class="string">"lisi"</span><span>);  </span></li>
    
    
    
    <li><span>    alert(obj1.name);  </span></li>
    
    
    
    <li class="alt"><span>    obj1.setName(</span><span class="string">"zhaogongzuo"</span><span>);  </span></li>
    
    
    
    <li><span>    alert(obj1.name);  </span></li>
    
    
    
    <li class="alt"><span>      </span></li>
    
    
    
    <li><span> 
   
   
   
   

the last line in createObject method isthe key.That is return oject.As you see,in the createObject method,oneOOOject actuallygenenenese new function oject.This is is nowhat wewet want.It.It t thethethethethethethethethetheat t t t thethethethethethethethethethethethethethethethetheaaat t t t t t t t t t t t t t t t aatototoststststststststststststststatotototototototototototototototototototototomethod out,and link it to the createObject method.
 

   
   
   
   

    
    
    
    
<span class="string">"text/javascript"</span><span>>  </span></span></li>
    
    
    
    <li><span>    </span><span class="keyword">function</span><span> createObject(name)  </span></li>
    
    
    
    <li class="alt"><span>    {  </span></li>
    
    
    
    <li><span>        </span><span class="keyword">var</span><span> object = </span><span class="keyword">new</span><span> Object();  </span></li>
    
    
    
    <li class="alt"><span>          </span></li>
    
    
    
    <li><span>        object.name = name;  </span></li>
    
    
    
    <li class="alt"><span>          </span></li>
    
    
    
    <li><span>        object.setName = setName;  </span></li>
    
    
    
    <li class="alt"><span>          </span></li>
    
    
    
    <li><span>        </span><span class="keyword">return</span><span> object;  </span></li>
    
    
    
    <li class="alt"><span>    }  </span></li>
    
    
    
    <li><span>      </span></li>
    
    
    
    <li class="alt"><span>    </span><span class="keyword">function</span><span> setName(name)  </span></li>
    
    
    
    <li><span>    {  </span></li>
    
    
    
    <li class="alt"><span>        </span><span class="keyword">this</span><span>.name = name  </span></li>
    
    
    
    <li><span>    }  </span></li>
    
    
    
    <li class="alt"><span>      </span></li>
    
    
    
    <li><span>    </span><span class="keyword">var</span><span> obj1 = createObject(</span><span class="string">"lisi"</span><span>);  </span></li>
    
    
    
    <li class="alt"><span>    alert(obj1.name);  </span></li>
    
    
    
    <li><span>    obj1.setName(</span><span class="string">"zhaogongzuo"</span><span>);  </span></li>
    
    
    
    <li class="alt"><span>    alert(obj1.name);  </span></li>
    
    
    
    <li><span>      </span></li>
    
    
    
    <li class="alt"><span> 
   
   
   
   

object.set Name=set Name.the right hand side can not add braaces、since the name itself refer to instance、not method.
 
Or use function like class in java、at least to some extent、
 

   
   
   
   

    
    
    
    
function Person(username)  
    
    
    
    
    {  
    
    
    
    
        this.username = username  
    
    
    
    
    }  
    
    
    
    
      
    
    
    
    
    var person1 = new Person("gongzuo");  
    
    
    
    
      
    
    
    
    
    alert(person1.username) 
   
   
   
   

when"new"te,the function Person generate an object and return.
Add properties through prototype.However,for frooptype,all object s share the same heap reference,so if you change one,the other change too. 
 

   
   
   
   

    
    
    
    
Person.prototype.age = 27;  
    
    
    
    
          
    
    
    
    
alert(person1.age);