html windows对象

小灰灰 2022-05-11 04:40 137阅读 0赞

**输出当前URL的主机名及端口:**

document.write(location.host);

**输出主机名:**

document.write(location.hostname);

**输出完整的url:**

document.write(location.href);

**打印当前窗口的内容:**

function printpage()
    {
    window.print();
    }

**打开对话框并输入:**

<p>点击按钮查看输入的对话框。</p>
    <button onclick="myFunction()">点我</button>
    <p id="demo"></p>

**JS:**

function myFunction(){
    	var x;
    	var person=prompt("请输入你的名字","Harry Potter");
    	if (person!=null && person!=""){
    	    x="你好 " + person + "！今天感觉如何？";
    	    document.getElementById("demo").innerHTML=x;
    	}
    }

**把内容滚动到指定坐标:**

function scrollWindow(){
        window.scrollTo(100,500);
    }

**周期执行函数并停止:**

**JS:**

var int=self.setInterval(function(){clock()},1000);
    function clock()
      {
      var d=new Date();
      var t=d.toLocaleTimeString();
      document.getElementById("clock").value=t;
      }

**指定函数执行时间:**

<p>点击按钮，在等待 3 秒后弹出 "Hello"。</p>
    <button onclick="myFunction()">点我</button>

**JS:**

function myFunction(){
    	setTimeout(function(){alert("Hello")},3000);
    }

**返回可用高度、宽度:**

document.write("可用高度: " + screen.availHeight);
    document.write("可用宽度: " + screen.availWidth);

function goBack() { window.history.back() } </script>
    function goForward() {  window.history.forward()  } </script>

**打开浏览器，并判断是否打开了浏览器:**

**JS:**

var myWindow;
    
    function openWin()
    {
    myWindow=window.open("","","width=400,height=200");
    }
    
    function closeWin()
    {
    if (myWindow)
      {
      myWindow.close();
      }
    }
    
    function checkWin()
    {
    if (!myWindow)
      {
      document.getElementById("msg").innerHTML="'myWindow' has never been opened!";
      }
    else
      {
      if (myWindow.closed)
        { 
        document.getElementById("msg").innerHTML="'myWindow' has been closed!";
        }
      else
        {
        document.getElementById("msg").innerHTML="'myWindow' has not been closed!";
        }
      }	
    }