实用javascript

1. 关于div：
2. 
3.  <div><img/></div>    obj=   document.getElementById("divID").getElementsByTagName("img")        
4. <div><img/><img/><img/><img/></div>       obj[]=document.getElementById("divID").getElementsByTagName("img")  
5.  height=  document.getElementById("divID").offsetHeight
6. 动态创建div ：div_box = document.createElement("DIV")
                            document.body.appendChild(div_box)
7.  document.getElementById("rad").checked = "checked"//  ==true/false
8. if (radioObj [i].checked==true)........
9. <img onmouseOver="this.src='../images/02.png' ;" inMouseOut=" this.src='../images/002.png' ;" />
10. <input type="button"   onClick="return confirm('确定删除吗?');" value="删除">
11. <a  hef="javascript:void(0)" onclick=“”></a>
12. <asp:button ......onClientOnClick="" ></....>
13. <input type="text" onFocus=" if (this.vale="输入姓名") this.value=";" value="输入姓名" />

14. <span onmousemove="this.style.color='#ff00ff'" onmouseout="this.style.color=''">aaaaa</span>this,style.bgcolor=‘grey’

15. <span onMouseOver="this.style.backgroundColor='red'" onmouseout="this.style.backgroundColor='Blue'">中国人民解放军</span>