window.document.write("width"+window.innerWidth+"height"+window.innerHeight);

不包括框的宽度

打开网页：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="btnClicked()">button</button>
    <script>
        //window.document.write("width"+window.innerWidth+"height"+window.innerHeight);
        function btnClicked(){
            window.open("openhtml.html");
        }
    </script>
</body>
</html>
加参数： 
window.open("openhtml.html","windowname","height=200,weight=200,top=100,left=100,toolbar=no,menubar=no");

关闭窗口： 
window.close();

window对象很多对象的祖先~~

计时器：


开始与停止

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="stopTime()">button</button>
    <p id="ptime"></p>
    <script>
        var mytime=setInterval(function(){
            getTime();
        },1000);
        function getTime(){
            var d=new Date();
            var t= d.toLocaleTimeString();
            document.getElementById("ptime").innerHTML=t;
        }
        function stopTime(){
            clearInterval(mytime);
        }
    </script>
</body>
</html>

延迟执行：

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="mywin()">button</button>
    <p id="ptime"></p>
    <script>
        var min;
        function mywin(){

            win=setTimeout(function(){alert("hello");},3000);

        }
    </script>
</body>
</html>
一直执行： 
var min;
        function mywin(){
            alert("hello");
            win=setTimeout(function(){mywin()},3000);

        }

暂停： 
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body οnlοad="myWin()">
    <button id="btn" οnclick="stopWin()">button</button>
    <p id="ptime"></p>
    <script>
        var min;
        function myWin(){
            alert("hello");
            win=setTimeout(function(){myWin()},3000);

        }
        function stopWin(){
            clearTimeout(win);
        }
    </script>
</body>
</html>

历史：

foward:/back:

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button οnclick="goceshi()">button</button>
    <script>
        function goceshi(){
            history.back();
        }
    </script>
</body>
</html>


<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <a href="openhtml.html">back to index</a>
    <button id="btn" οnclick="goob()">button</button>
    <script>
        function goob(){
            history.forward();
        }
    </script>
</body>
</html>



<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="getLoc()">button</button>
    <p id="ptime"></p>
    <script>
        function getLoc(){
           document.getElementById("ptime").innerHTML= window.location.hostname;
        }
    </script>
</body>
</html>
返回： localhost 
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="getLoc()">button</button>
    <p id="ptime"></p>
    <script>
        function getLoc(){
           document.getElementById("ptime").innerHTML= window.location.pathname;
        }
    </script>
</body>
</html>

返回：
/untitled1/ceshi.html
 
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="getLoc()">button</button>
    <p id="ptime"></p>
    <script>
        function getLoc(){
           document.getElementById("ptime").innerHTML= window.location.port;
        }
    </script>
</body>
</html>

返回：63342（端口）

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="getLoc()">button</button>
    <p id="ptime"></p>
    <script>
        function getLoc(){
           document.getElementById("ptime").innerHTML= window.location.href;
        }
    </script>
</body>
</html>


返回地址： http://localhost:63342/untitled1/ceshi.html 
<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
    <button id="btn" οnclick="getLoc()">button</button>
    <p id="ptime"></p>
    <script>
        function getLoc(){
           location.assign("http://www.jikexueyuan.com");
        }
    </script>
</body>
</html>

用来做屏幕适配： 
        document.write("可用高度："+screen.availHeight+",可用高度"+screen.availWidth);
        document.write("高度"+screen.height+"宽度："+screen.width);


输出：可用高度：768,可用高度1304高度768宽度：1366