常用JavaScript 消息框

<html>

<head>

<script type="text/javascript"> function disp_alert() {

alert("我是警告框！！")

}

</script>

</head>

<body>

<input type="button" onclick="disp_alert()" value="显示警告框" />

</body>

</html>

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<html>

<head>

<script type="text/javascript"> function disp_alert() {

alert("再次向您问好！在这里，我们向您演示" + '\n' + "如何向警告框添加折行。")

} </script>

</head>

<body>

<input type="button" onclick="disp_alert()" value="显示警告框" />

</body>

</html>

 

  -----------------------------------------------------------------------------------------------------------------------

<html>

<head>

<script type="text/javascript"> function show_confirm()

{

var r=confirm("Press a button!");

if (r==true)  

{  

alert("You pressed OK!");  

} else  

{  

alert("You pressed Cancel!");  

}

} </script>

</head>

<body>

<input type="button" onclick="show_confirm()" value="Show a confirm box" />

</body> </html>

 

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<html>

<head>

<script type="text/javascript"> function disp_prompt()  

{  

var name=prompt("请输入您的名字","Bill Gates")  

if (name!=null && name!="")    

{     document.write("你好！" + name + " 今天过得怎么样？")   

  }  

}

</script>

</head>

<body>

<input type="button" onclick="disp_prompt()" value="显示提示框" />

</body> </html>

posted @ 2014-03-07 11:54  Snail1688  阅读(258)  评论(0)    收藏  举报