java方式来写js程序(demo)

2022-07-15 80酷酷网 80kuku.com

　　js|程序

javascript应用是非常广泛的,而且功能特别强大,但是javascript程序就是没有java代码好看,这点是好无疑问的,不过因为js应用太广了,在web应用中几乎离不开它,我初学js,总想像写java程序那样写js。

一个是过滤相同的元素：
<script src="core.js"></script>
<script src="collection.js"></script>
<script>
var a="74,77,74,74,89,45,45,55,89";
//"74,77,89,45,55"
var arr=a.split(",");
var set=new HashSet();
set.addAll(Arrays.asList(arr));
a=set.toArray();
alert(a);
</script>

另一个程序完全是模拟CGI的：
<script src="core.js"></script>
<script src="collection.js"></script>
<style>
td{
font-size:12px;
}
th{
font-size:14px;
}
</style>

<body>

</div>

<table width="50%" align="center">
<tr>
<td>用户ID:<input type="text" id="txt_id"></td>
<td>用户名称:<input type="text" id="txt_name"></td>
<td><a href="#" >添加用户</a></td>
</tr>
</table>
</body>
<script>
function User(id,name){
this.id=id;
this.name=name;
this.equals=equals;
function equals(obj){
return this.id==obj.id;
}
this.compareTo=compareTo;
function compareTo(obj){
return 1;
}
}

function AscID(){
this.compare=compare;
function compare(obj1,obj2){
  if(obj1.id>obj2.id) return 1;
  else if(obj1.id==obj2.id) return 0;
  else return -1;
}
}

function DescID(){
this.compare=compare;
function compare(obj1,obj2){
  if(obj1.id>obj2.id) return -1;
  else if(obj1.id==obj2.id) return 0;
  else return 1;
}
}

var table=document.getElementById("list_table");
var list=new SortedList();
var buffer=new ArrayList();
buffer.add(new User("100","Heery"));
buffer.add(new User("101","Marry"));
buffer.add(new User("102","JIM"));
buffer.add(new User("200","Bush"));
buffer.add(new User("201","Eey"));
buffer.add(new User("203","Boy"));
buffer.add(new User("300","Oush"));
buffer.add(new User("1111111","胡江涛"));
buffer.add(new User("2324424","温家宝"));
buffer.add(new User("24325324","刘淇"));
buffer.add(new User("245325353","吴树根"));

list.setComparator(new AscID());
list.addAll(buffer);
//var id_asc=true;

var pageSize=10;
var curPage=1;

function getTotalPage(){
return Math.ceil((list.size()/pageSize));
}
function getNavigation(){
var nav="<tr><td colspan=2>";
nav+="<a href='#' >首页</a>  ";
nav+="<a href='#' >上一页</a>  ";
nav+="<a href='#' >下一页</a>  ";
nav+="<a href='#' >末页</a>  ";
nav+="总共:"+list.size();
nav+="  "
nav+="页次:"+curPage+"/"+getTotalPage();
nav+="  ";
nav+="每页显示:"+pageSize;
nav+="  ";
nav+="当前页数:"+curPage;
nav+="</td></tr>";
return nav;
}

function addUser(){
var id=document.getElementById("txt_id").value;
var name=document.getElementById("txt_name").value;
//if(id_asc)
buffer.add(new User(id,name));
list.add(new User(id,name));
refresh();
}

function searchUser(){
var key=document.getElementById("search_name").value;

var com=list.getComparator();
list=new SortedList();
if(com!=null) list.setComparator(com);
for(var i=0;i<buffer.size();i++){
var u=buffer.get(i);
if(u.name.indexOf(key)!=-1) list.add(u);
}
refresh();
}

function delUser(id){
buffer.remove(new User(id,name));
list.remove(new User(id,name));
refresh();
}

function descID(){
var oldList=list;
list=Collections.sort(oldList,new DescID());
refresh();
var id=document.getElementById("user_id");
id.innerHTML="用户ID[<a href='#' >升序</a>]";

}

function ascID(){
var oldList=list;
list=Collections.sort(oldList,new AscID());
refresh();
}

setTimeout("oneStep()",500);
setTimeout("twoStep()",1000);
setTimeout("threeStep()",1500);
setTimeout("fourStep()",2000);
setTimeout("firstPage()",3000);
//firstPage();

</script>