<html>

 <head>

 <meta charset="utf-8">

 <title></title>

 </head>

 <body>

 <hr>

     <h1>2：使用window.open() 是一个广告？</h1>

     <input type="submit" onclick="" value="关闭"/>

     <script language="javascript">

         for(var i=0;i<5;i++){

             var w=window.open("http://www.baidu.com","baidu"+1,"height=450,width=450");

         }

         function click(){

             w.close();

         }

     </script>

     <hr>

     <h1>3. 编写登录页面：登录按钮、注册按钮（window.location ）跳转注册页面?</h1>

     <input type="submit" value="注册" onclick="javascript:

         window.location.href='4.html'">

     <input type="submit" value="登录" onclick="javascript:

         window.location.href='3.html'"/>

 </body>

 </html>        

 <html>

 <head>

 <meta charset="utf-8">

 <title></title>

 </head>

 <body>

     <h1>4. 获取当前时间，格式如下：2016年9月20日 12:12:12 星期二 </h1>

     <hr/>

     <script language="javascript">

         var date=new Date();

         document.write("当前的时间："+date+"<br/>");

         document.write(date.getFullYear()+"年");

         document.write((date.getMonth()+1)+"月");

         document.write(date.getDate()+"日&nbsp;&nbsp;&nbsp;&nbsp;");

         document.write(date.getHours()+":");

         document.write(date.getMinutes()+":");

         document.write(date.getSeconds());

         document.write("&nbsp;&nbsp;&nbsp;&nbsp;星期"+date.getDay());

     </script>

 </body>

 </html>        

 <html>

 <head>

 <meta http-equiv="content-type" content="text/html;charset=utf-8">

 <title></title>

 </head>

 <body>

     <h1>1:Javascript中数组的学习和练习</h1>

     <script language="javascript">

         document.write("1:创建一个空数组"+"<br/>");

         var arr1=new Array();

         document.write("var arr1 = new Array()"+"<br/>");

         document.write("2:指定数组的长度"+"<br/>");

         var arr2=new Array(5);

         document.write("var arr2 = new Array(5)"+"<br/>");

         document.write("3:创建数组并初始化参数"+"<br/>");

         //console.log(arr2.length);

         var arr3=new Array(9528,"小别","男");

         document.write("var arr3=new Array(9528,小别,男)"+"<br/>");

         document.write("4:创建一个数组"+"<br/>");

         var arr4=[];

         document.write("var arr4 = []"+"<br/>");

         document.write("5:使用括号[]，并且传入初始值"+"<br/>");

         var arr5=[12,23,45,6,8];

         document.write("var arr4=[12,23,45,56,6,8]"+"<br/>");

         document.write("<hr>");

         var arr6=new Array(5);

         document.write("arr6数组的长度："+arr6.length+"<br/>");

         document.write("arr6数组的元素："+arr6+"<br/>");

         console.log(arr6);

         var arr7=new Array(5,6);

         document.write("arr7数组的长度："+arr7.length+"<br/>");

         document.write("arr7数组的元素"+arr7+"<br/>");

         var arr8=[11,47,88,525,66,9,4];

         document.write("arr8数组的长度："+arr8.length+"<br/>");

         document.write("arr8数组的元素"+arr8+"<br/>");

         var arr9=[78,84,51,263,95,62];

         document.write("arr9的数组元素："+arr9+"<br/>");

         document.write("arr9[0]="+arr9[0]+"<br/>");

         var i=1;

         document.write("arr9[1]="+arr9[i]+"<br/>");

         document.write("arr9[2]="+arr9[++i]+"<br/>");

         var array=[74,54,69];

         array[5]=12;

         for(var i=0;i<array.length;i++){

             document.write("array"+"["+i+"]"+"="+array[i]+",");

         }

         document.write("<hr>");

         document.write("数组元素的添加"+"<br/>");

         var arr=new Array;

         arr[0]="编号";

         arr[1]="姓名";

         arr[2]="年龄";

         arr[3]="性别";

         document.write("数组元素添加："+arr+"<br/>");

         document.write("数组元素的删除："+"<br/>");

         delete arr[3];

         document.write("删除后的效果："+arr+"<br/>");

         document.write("<hr>");

         document.write("数组的截取"+"<br/>");

         var arr=new Array(45,78,9,6,3,2,5,7);

         document.write("数组的原始长度："+arr+"<br/>");

         document.write("数组的截取前闭后开："+arr.slice(1,2)+"<br/>");

         document.write("<hr>");

         document.write("数组的合并"+"<br/>");

         var arr1=[4,7,8,5,2,63];

         var arr2=[7,5,2,6,9];

         var arr3=arr1.concat(arr2);

         document.write("合并后的arr3:"+arr3+"<br/>");

         document.write("<hr>");

         document.write("数组元素的反转"+"<br/>");

         var arr1=[12,45,78,9,6,3,6,4,45];

         document.write("数组元素反转前："+arr1+"<br/>");

         arr1.reverse();

         document.write("数组元素反转后："+arr1+"<br/>");

         document.write("<hr>");

         document.write("数组的任意多数的排序"+"<br/>");

         var arr=[45,7,555,336,4,2,1,40];

         function sortArray(a,b){

             return a-b;

         }

         document.write("排序前："+arr+"<br/>");

         document.write("排序后："+arr.sort(sortArray)+"<br/>");

         document.write("<hr>");

         document.write("数组字符串的学习"+"<br>");

         var arr=[11,44,55,66,99,88,77,22,33];

         document.write("数组字符串前："+arr+"<br/>");

         document.write("数组字符串化："+arr.join(" ")+"<br/>");

         document.write("数组字符串化："+arr.join("|")+"<br/>");

     </script>

     <h1>2:浏览器对象模型的学习和练习</h1>

     <script language="javascript">

         window.document.write("所有js全局变量，函数，变量均自动成为window对象的成员");

         //window.alert("你好哟！！！");

         document.write("<hr>");

         document.write("window的尺寸"+"<br/>");

         var h=window.innerHeight;

         var w=window.innerWidth;

         document.write("浏览器现在的高："+h+"  宽："+w+"<br/>");

         //var ieh=window.document.documentElement.clientHeight;

         //var iew=window.document.documentElement.clientWidth;

         //alert(ieh+""+iew);

         //window.open("http://www.baidu.com","baidu","height=300,width=250");

         document.write("<hr>");

         document.write("可用的屏幕"+"<br/>");

         document.write("可用的屏幕的高度："+screen.availHeight+"<br/>");

         document.write("可用的屏幕的宽度："+screen.availWidth+"<br/>");

         document.write("<hr>");

         document.write("Window.location对象用于获取当前页面的地址"+"<br/>");

         document.write("当前页面的路径："+window.location.pathname+"<br/>");

         //document.write("当前页面的port:"+window.location.port+"<br/>");

     </script>

     <hr>

     <script language="javascript">

         var name=prompt("请输入您的尊姓大名.");

         document.write(name+"<br/>");

     </script>

     <input type="button" value="删除" onclick="del()"/>

         <script language="javascript">

             function del(){

                 if(confirm("您确认删除嘛？？")){

                     alert("你好狠心！555555");

                 }else{

                     alert("你真好！美美哒");

                 }

             }

         </script>

 </body>

 </html>