深入学习JavaScript中的bom

BOM(Broswer Object Model)

凡是 window 的属性和方法,均可以省略“window.”

方法:

框窗

1.警告框

window.alert("msg");

2.确认框

window.confirm("msg");

3.询问框

window.prompt("msg","defaulvalue")

页面

1.打开一个窗口

window.open()

2.在子窗口中使用,表示父窗口的window对象

window.opener

window.opener.fatherSayHello(); 调用父窗口的方法 window.opener.a

3.关闭当前窗口

window.close()

window.close(); 关闭当前 window.opener.close(); 关闭父窗口

定时任务

1.定时任务

var taskid = window.setTimeout(function,ms); window.setTimeout("alert('hello!')", 5000);

2.间隔执行任务

var taskid = window.setInteval(function,ms);

3.清除定时任务

window.clearTimeout(taskid);

4.清除间隔执行任务

window.clearInteval(taskid);

打印屏幕

//长*宽 console.log(screen.width + "*" + screen.height)

后退

window.history.back();

前进

window.history.forward();

刷新

window.location.reload();//刷新 window.location.href = window.location.href;//刷新

Go 前进(x)步,后退(x)步,刷新(0),

window.history.go(x)

链接

window.location.href = ;

用户代理 浏览器内核

console.log(window.navigator.userAgent)

框窗

//凡是window的属性和方法,均可以省略“window.” <script type="application/javascript"> // 警告框 function testAlert(){ var result=window.alert("这是一个警告框") console.log(result); } // confirm 确认框 function testConfirm(){ var result =window.confirm("你确认要离开了吗?"); if(result){ alert("欢迎下次再来!") }else{ alert("那你在逛逛吧!") } consol.log(result); } // prompt 询问框 function testPrompt(){ var result = window.prompt("请输入U盾密码","例如:123456"); console.log(result); } </script> <body> <button>testAlert</button> <button>testConfirm</button> <button>testPrompt</button> </body>

页面

//子页面 <script type="application/javascript"> function sayHello(){ alert("hello world") } //打开一个窗口 function callFatherMethod(){ window.opener.fatherSayHello(); window.opener.a } //关闭本窗口 function testClose(){ window.close(); } //关闭父窗口 function testFatherClose(){ window.opener.close(); } </script> <body> <button>调用父窗口的方法</button> <button>关闭本窗口</button> <button>关闭父窗口</button> </body> //父页面 <script type="application/javascript"> var a = 10; window.onload = function(){ console.log(window); console.log("11111111111") } //打开一个新窗口 function testOpen(){ var sonwindow = window.open("son.html","aaa","height=300,width=500,top=50,left=50,toolbar=no,menubar=no,scrollbars=no,resizable=no,location=no,status=no") //子窗口的window对象 console.log(sonwindow); } function fatherSayHello(){ alert("hello son!"); } </script> <body> <button>打开一个新窗口</button> </body>

定时任务

<script type="application/javascript"> function setTime() { // window.setTimeout("alert('hello!')",5000); window.setTimeout(sayHello, 5000); } var sayHello = function () { alert("你好!"); } </script> </head> <body> <button>调用sayHello</button> <button>调用setTime</button>

间隔执行任务

<script type="application/javascript"> /* window.onload = function(){ window.setTimeout(closeSelf, 1000); } function closeSelf() { var secval = document.getElementById("sec").innerHTML; var secint = parseInt(secval); document.getElementById("sec").innerHTML = --secint; if(secint == 0){ window.close(); } window.setTimeout(closeSelf, 1000); } */ var taskid = 0; window.onload = function(){ //间隔执行任务,间隔 1000ms 执行一次 taskid = window.setInterval(closeSelf, 1000); } function closeSelf() { //获取 10s var secval = document.getElementById("sec").innerHTML; console.log(secval); var secint = parseInt(secval); console.log(secint); //10s 减减 document.getElementById("sec").innerHTML = --secint; if(secint == 0){ window.close(); } } // 4.清除间隔执行任务 暂停 function stopTask(){ window.clearInterval(taskid); } //继续计时 function goonTask(){ taskid = window.setInterval(closeSelf, 1000); console.log(taskid) } </script> <body> 付款成功,页面将在<span>10</span>s后关闭。 <button>稍等,待会我会自己关闭</button> <button>继续读秒,关闭窗口</button> </body>

内容版权声明:除非注明,否则皆为本站原创文章。

转载注明出处:http://www.heiqu.com/677af5ccb699928ce2af081f2d90680d.html